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Troubleshooting - Support

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1. Voltage is too high for the V f characteristics Adjust the user set V f patterns E1 04 through E1 10 Parameters E1 08 and 1 10 may need to be reduced If E1 08 and E1 10 are set too high there may be very little load tolerance at low speed The wrong motor rated current is set to E2 01 Check the motor rated current Enter the value written on the motor nameplate to parameter E2 01 The maximum frequency for the drive input power is set too low Check the rated frequency indicated on the motor nameplate Enter the rated frequency to E1 06 Base Frequency Multiple motors are running off the same drive Disable the Motor Protection function L1 01 0 and install a thermal relay to each motor The electrical thermal protection characteristics and motor overload characteristics do not match Check the motor characteristics Correct the value set to L1 01 Motor Protection Function Install an external thermal relay The electrical thermal relay is operating at the wrong level Check Check he current rating listed on the motor nameplate he value set for the motor rated current E2 01 Cause Possible Solution Overexcitation current is enabled Overexcitation is a potential serious danger to the motor Reduce the excitation deceleration gain n3 13 Set L3 04 Stall Prevention during Deceleration to a value other than 4 Disable
2. 216 Correct the setting for the carrier frequency OYMC TOEP C71060622 01 OY V1000 User Manual 5 6 Operator Programming Errors Cause Possible Solutions The following simultaneous contradictory settings C6 05 is greater than 6 and C6 04 is greater than C6 03 carrier frequency lower limit is greater than the upper limit If C6 05 is less than or equal to 6 the drive operates at C6 03 Upper and lower limits between C6 02 and C6 05 contradict each other Correct the parameter settings LED Operator Display Error Name oPE13 Pulse Monitor Selection Error Incorrect setting of monitor selection for Pulse Train H6 06 Cause Possible Solutions Scaling for the Pulse Train monitor is set to 0 H6 07 0 while H6 06 is not set to 101 102 105 or 116 Change scaling for the Pulse Train monitor or set H6 06 to 101 102 105 or 116 LED Operator Display Error Name 14 Application setting error Incorrect setting in combination with simple positioning stop or Bi directional output conversion Cause Possible Solutions Parameter b1 03 9 simple positioning stop and Drive is not initialized to European settings 02 09 is not 2 Dwell function is activated b6 03 or b6 04 are not 0 the KEB function is activated H1 O10 65 66 7A 7B Stall prevention during deceleration is enabled L3 04 is not 0 Over voltage suppressio
3. CPF22 186 A D Conversion Fault A D conversion error OYMC TOEP C71060622 01 OY V1000 User Manual Cause 5 4 Fault Detection Possible Solution Control circuit is damaged Cycle power to the drive Refer to Diagnosing and Resetting Faults on page 222 f the problem continues replace the drive LED Operator Display Fault Name CPF23 PWM Feedback Fault PWM feedback error Cause Possible Solution Hardware is damaged Replace the drive LED Operator Display Fault Name CPF24 Drive Capacity Signal Fault Entered a capacity that does not exist Checked when the drive is powered up use Possible Solution Hardware is damaged Replace the drive LED Operator Display Fault Name im dtu dEv Speed Deviation for Simple V f with PG According to the pulse input RP the speed deviation is greater than the setting in F1 10 for longer than the time set to F1 11 Troubleshooting Cause Possible Solution Load is too heavy Reduce the load Acceleration and deceleration times are set too short Increase the acceleration and deceleration times C1 01 through C1 08 The load is locked up Check the machine Parameters are not set appropriately Check the settings of parameters F1 10 and F1 11 Motor brake engaged Ensure the motor brake releases properly LED Ope
4. cy 14 Control Circuit Fault CPU error CPU operates incorrectly due to noise etc use Possible Solution Hardware is damaged Replace the drive LED Operator Display Fault Name roe re LIT IL CPF16 Clock Fault Standard clock error Cause Possible Solution Hardware is damaged Replace the drive LED Operator Display Fault Name cre FBE 11 CPF17 Timing Fault A timing error occurred during an internal process Cause Possible Solution Hardware is damaged Replace the drive LED Operator Display Fault Name CPF 1B CPF18 Control Circuit Fault CPU error CPU operates incorrectly due to noise etc Cause Possible Solution Hardware is damaged Replace the drive LED Operator Display Fault Name PE CPF19 Control Circuit Fault CPU error CPU operates incorrectly due to noise etc Cause Possible Solution Hardware is damaged Replace the drive LED Operator Display Fault Name CPF20 or CPF21 One of the following faults occurred RAM fault FLASH memory error watchdog circuit exception clock error RAM fault FLASH memory error ROM error Watchdog circuit exception self diagnostic error Clock error use Possible Solution Hardware is damaged Replace the drive LED Operator Display Fault Name
5. Push the LO RE button If 02 01 is set to 0 then the LO RE button will be disabled Auto Tuning has just completed When Auto Tuning has completed the drive is switched back to the Programming Mode The Run command will not be accepted unless the drive is in the Drive Mode Use the LED operator to enter the Drive Mode Refer to The Drive and Programming Mode on page 93 A Fast Stop was executed and has not yet been reset Reset the Fast Stop command Settings are incorrect for the source that provides the run command Check parameter b1 02 Run Command Selection Set b1 02 so that it corresponds with the correct run command source 0 LED LCD operator 1 Control circuit terminal default setting 2 MEMOBUS Modbus communications 3 Option card One of the Safety Inputs is open Check for a short circuit between terminals H1 and HC See if one of the Safety Inputs is open Correct any faulty wiring There is faulty wiring in the control circuit terminals Check the wiring for the control terminal Correct wiring mistakes Check the input terminal status monitor U1 10 The drive has been set to accept the frequency reference from the incorrect source Check parameter b1 01 Frequency Reference Selection 1 Set b1 01 to the correct source of the frequency reference 0 LED operator 1 Control circuit terminal default setting 2 MEMOBUS Modbus communications 3 Op
6. The torque limit function is operating in Open Loop Vector Control Check the torque limit setting It may be too low L7 01 through L7 04 Reset the torque limit to its default value 200 Acceleration time has been set too long Check if the acceleration time parameters have been set too long C1 01 03 05 07 Motor characteristics and drive parameter settings are incompatible with one another in V f Control Select the correct V f pattern so that it matches the characteristics of the motor being used Check E1 03 V f Pattern Selection The right combination of motor characteristics have not been set in Open Loop Vector Control Execute Rotational Auto Tuning Incorrect frequency reference setting Check the multi function analog input settings Check if multi function analog input terminal A1 or A2 is set for frequency gain H3 02 or H3 10 1 If so the frequency reference will be 0 if there is no voltage current input provided Ensure H3 02 and H3 10 are set to the proper values Ensure the analog input value is set to the right value U1 13 U1 14 The Stall Prevention level during acceleration and deceleration set too low Check the Stall Prevention level during acceleration L3 02 If L3 02 is set too low acceleration will take a fair amount of time ncrease L3 02 OYMC TOEP C71060622 01 OY V1000 User Manual 229 5D Troublesho
7. 2 00 10 An external device has tripped an alarm function Remove cause of the external fault and reset the multi function input value YES Wiring is incorrect Ensure t termina he signal lines have been connected properly to the s assigned for external fault detection 20 to 2F Reconnect the signal line Multi function contact inputs are set incorrectly Check if the unused terminals have been set for HI Change 20 to 2F External Fault he terminal settings LED Operator Display Minor Fault Name FbH Excessive PID Feedback The PID feedback input is higher than the level set in b5 36 for longer than the time set in b5 37 and b5 12 is set to 1 or 4 Cause Possible Solutions Minor Fault Output 2 00 10 Parameters settings for b5 36 and b5 37 are incorrect Check parameters b5 36 and b5 37 YES PID feedback wiring is faulty Correct the wiring YES Feedback sensor has malfunctioned Check the sensor and replace it if damaged YES Feedback input circuit is damaged Replace the drive YES LED Operator Display Minor Fault Name FbL FbL PID Feedback Loss The PID feedback input is lower than the level set in b5 13 for longer than the time set in b5 14 and b5 12 is set to 1 or 4 Cause Possible Solutions
8. Troubleshooting This chapter provides descriptions of the drive faults alarms errors related displays and possible solutions This chapter can also serve as a reference guide for tuning the drive during a trial run 5 1 SECTION SAFETY 2 on steed es eee eu ae 170 5 2 MOTOR PERFORMANCE FINE TUNING 173 5 3 DRIVE ALARMS FAULTS AND ERRORS 177 5 4 FAULT DETECTION creme is 183 5 5 ALARM 202 5 6 OPERATOR PROGRAMMING ERRORS 213 5 7 AUTO TUNING FAULT DETECTION 218 5 8 DIAGNOSING AND RESETTING FAULTS 222 5 9 TROUBLESHOOTING WITHOUT FAULT DISPLAY 224 OYMC TOEP C71060622 01 OY V1000 User Manual 169 5 1 Section Safety 5 1 Section Safety A DANGER Electrical Shock Hazard Do not connect or disconnect wiring while the power is on Failure to comply will result in death or serious injury Electrical Shock Hazard Do not operate equipment with covers removed Failure to comply could result in death or serious injury The diagrams in this section may illustrate drives without covers or safety shields to display details Be sure to reinstall covers or shields before operating the drives and run the drives according to the instructions described in this manual Always ground the motor side grounding terminal Improper equipment grounding could result in death or serious injury by contacting the motor ca
9. Minor Fault Output 2 00 10 Parameters settings for b5 13 and b5 14 are incorrect Check parameters b5 13 and b5 14 YES PID feedback wiring is faulty Correct the wiring YES Feedback sensor has malfunctioned 206 Check th e sensor and replace it if damaged YES OYMC TOEP C71060622 01 OY V1000 User Manual Feedback input circuit is damaged 5 5 Alarm Detection Replace the drive LED Operator Display Minor Fault Name Safe Disable Signal Input Hbb Both Safe Disable input channels open Cause Possible Solutions Minor Fault Output 2 00 10 Both Safe Disable Inputs H1 and H2 are open Check if external safety circuit tripped and disabled the drive If the Safe Disable function is not utilized check if the terminals HC H1 and H2 are linked YES Internally both Safe Disable channels are broken Replace the drive LED Operator Display Minor Fault Name HbbE HbbF Safe Disable Signal Input One Safe Disable input channels open Cause Possible Solutions Minor Fault Output 2 00 10 One of the inputs H1 and H2 is open while the other is closed Check the wiring to device that controls the Safe Disable inputs If the Safe Disable function is not utilized check if the terminals HC H1 and H2 are linked properly 5D Troubleshooting YES One of the Safe Disable cha
10. Possible Solution Enter the correct motor code for the PM being used into 5 01 For special purpose motors enter the correct data to all E5 parameters according to the Test Report provided for the motor ncrease the value set to n8 55 Load Inertia for PM ncrease the value set to n8 51 Pull In Current during Accel Decel for PM Reduce the load ncrease the motor or drive capacity The wrong motor code has been set Yaskawa motors only Load is too heavy Load inertia is too heavy Increase n8 55 Load Inertia for PM Acceleration and deceleration times Increase the acceleration and deceleration times C1 01 through C1 08 are too short ncrease the S curve acceleration and deceleration times C2 01 LED Operator Display Fault Name Undertorque Detection 1 UL3 The current has fallen below the minimum value set for torque detection L6 02 for longer than the allowable time L6 03 Possible Solution Parameter settings are not appropriate for the type of load Check the settings of parameters L6 02 and L6 03 There is a fault on the machine side Check the load for any problems OYMC TOEP C71060622 01 OY V1000 User Manual 199 5D Troubleshooting 5 4 Fault Detection LED Operator Display Fault Name UL4 Undertorque Detection 2 The current has fallen below the minimum value set for torque detection L6 05 for longer than the al
11. Refer to Using the Digital LED Operator on page 87 If problems occur that are not covered in this manual contact the nearest OY MC representative with the following information Drive model Software version Date of purchase Description of the problem Table 5 4 contains descriptions of the various types of alarms faults and errors that may occur while operating the drive Contact OYMC or an OYMC representative in the event of drive failure Table 5 4 Types of Alarms Faults and Errors 5D Troubleshooting Drive Responses to Alarms Faults and Errors When the drive detects a fault The digital operator displays text that indicates the specific fault and the ALM indicator LED remains lit until the fault is reset The fault interrupts drive output and the motor coasts to a stop Depending on the setting the drive and motor may stop via different methods than listed If a digital output is programmed for fault output 2 00 E it will close if a fault occurs When the drive detects a fault it will remain inoperable until that fault has been reset Refer to Fault Reset Methods on page 223 Faults When the drive detects an alarm or a minor fault The digital operator displays text that indicates the specific alarm or minor fault and the ALM indicator LED flashes Minor Faults and The motor does not stop Alarms One of the multi function contact outputs closes if set
12. Values calculated by the drive are outside the allowable parameter setting ranges Check and correct faulty motor wiring Disconnect the motor from machine and perform Auto Tuning LED Operator Display Error Name zr 09 Acceleration Error detected only during Rotational Auto Tuning Cause Possible Solutions The motor did not accelerate for the specified acceleration time Increase the acceleration time C1 01 Check if it is possible to disconnect the machine from the motor OYMC TOEP C71060622 01 OY V1000 User Manual 219 D Troubleshooting 5 7 Auto Tuning Fault Detection Torque limit when motoring is too low L7 01 and L7 02 Check the settings of parameters L7 01 and L7 02 ncrease the setting LED Operator Display Error Name Er 11 Er 11 Motor Speed Fault detected only when Auto Tuning is enabled Cause Possible Solutions Torque reference is too high Enabled in OLV only Increase the acceleration time C1 01 Disconnect the machine from the motor if possible LED Operator Display Error Name Er c Er 12 Current Detection Error Cause Possible Solutions One of the motor phases is missing U T1 V T2 W T3 Check motor wiring and correct problems Current exceeded the current rating of the drive The current is too low Check the motor wiring for a short between motor
13. 180 for more information An overvoltage situation trips both faults and minor faults therefore it is important to note whether the LEDs remain lit or if the LEDs flash LED Operator LED Operator Display Name Page Display Name Page 6115 bus Option Communication 733 DE 33 22 A D Conversion Error 186 BuJ Error ce FE xr MEMOPUS Modbus 183 PEZ 3 CPE23 PWM Feedback Data Fault 187 LL Communication Error L LJ LE CF Control Fault 184 PFA H CPF24 Drive Capacity Signal Fault 787 ror Excessive Speed Deviation roc IC Current Offset Fault 184 dtu dEv for Simple V f with PG 187 CPF02 A D Conversion Error 184 EFD EFO Option Card External Fault 187 cree EFI C 13 CPF03 PWM Data Fault ae c mre EEG EF6 input termina o Drive specification 8 mismatch during Terminal y T TI i LL LPFG CPF06 Board or Control Board 184 FbH Excessive PID Feedback 188 replacement r PERT Terminal Board 185 Chi PID Feedback Loss 189 erro Communication Fault roe EEPROM Serial rc Poem pt LPEDB CPF08 Communications Fault 185 ui GF Ground Fault 189 LEE CPF11 RAM Fault 185 LE LF Output Phase Loss 189 178 OYMC TOEP C71060622 01 OY V1000 User Manual 5 3 Drive Alarms Faults and Errors LED Operator LED Operator Display Nane Page Display Name Page id CPF12
14. DC Injection Braking Increase the amount of DC Injection Braking b2 02 The timing for the brake to close and release is not set properly Noise From Drive or Output Lines When the Drive is Powered On Possible Solutions Lower the carrier frequency C6 02 nstall a noise filter on the input side of drive input power Relay switching in the drive generates Install a noise filter on the output side of the drive excessive noise Place the wiring inside a metal conduit to shield it from switching noise Ground the drive and motor properly Separate the main circuit wiring and the control lines Ground Fault Circuit Interrupter GFCI Trips During Run Cause Possible Solutions ncrease the GFCE sensitivity or use GFCI with a higher threshold Lower the carrier frequency C6 02 Reduce the length of the cable used between the drive and the motor nstall a noise filter or reactor on the output side of the drive Excessive leakage current trips MCCB Connected Machinery Vibrates When Motor Rotates Excessive Motor Oscillation and Erratic Rotation Cause Possible Solutions Poor balance between motor phases Check drive input power voltage to ensure that it provide 232 OYMC TOEP C71060622 01 OY V1000 User Manual 5 9 Troubleshooting without Fault Display Unexpected Noise from Connected Machinery Cause Possible Solutions The carrier frequency is at the res
15. E2 07 08 a temporary value 220 Check and correct faulty motor wiring Disconnect the motor from machine and perform Rotational Auto Tuning OYMC TOEP C71060622 01 OY V1000 User Manual 5 7 Auto Tuning Fault Detection LED Operator D isplay Error Name B 1 End3 End3 Rated Current Setting Alarm displayed after Auto Tuning is complete Cause Possible Solutions The motor line to line resistance and the m current are not consistent with one another The correct current rating printed on the nameplate was not entered into T1 04 OYMC TOEP C71060622 01 OY V1000 User Manual otor rated Check the setting of parameter T1 04 Check the motor data and repeat Auto Tuning 221 5D Troubleshooting 5 8 Diagnosing and Resetting Faults 5 8 Diagnosing and Resetting Faults When a fault occurs and the drive stops follow the instructions below to remove whatever conditions triggered the fault then restart the drive Fault Occurs Simultaneously with Power Loss WARNING Electrical Shock Hazard Ensure there are no short circuits between the main circuit terminals R L1 S L2 and T L3 or between the ground and main circuit terminals before restarting the drive Failure to comply may result in serious injury or death and will cause damage to equipment 1 Turn on the drive input power 2 Use monitor parameters U2 LILI to display data on the operating status o
16. FLASH Memory Fault 185 L Fg LF2 Output Open Phase 190 PE 13 CPF13 Missis Circuit 185 n t oC Overcurrent 190 CPF CPF14 Control Circuit Fault 186 o E ROG oFA00 Option Card Fault port A 791 Pt iG CPF16 Clock Fault 186 aH oH Heatsink Overheat 192 Lt PF 17 CPF17 Timing Fault 186 oH oH1 Heatsink Overheat 192 ae os nr PG Disconnect oc io T Vi PE IO CPF18 Control Circuit Fault 186 Pla PGo for Simple V f with PG 198 PE g 19 Control Circuit Fault 186 rH rH Dynamic Braking Resistor 198 RAM Fault 186 Damice Braking 199 Transistor FHEIN PEED cpr20 FLASH Memory Faut 186 GE Ser poo Many Speed Search or or roca CPF21 Watchdog Circuit 186 STO Pull Out Detection 199 GEC Exception jiu Clock Fault 186 uL j UL3 Undertorque Detection 1 199 ais oH3 Motor Ouest 193 ig UL4 Undertorque Detection 2 200 ur input UL Motor Overheat 2 PTC Mechanical Weakening Lu tc ont om4 input 193 uc UL5 Detection 2 209 nL oL1 Motor Overload 193 Uu Uvl Undervoltage 200 E Control Power Supply 4122 bh c ole oL2 Drive Overload 194 Luc Uv2 Undervoltage 201 oL J oL3 Overtorque Detection 1 195 Hu J Uv3 Soft Charge Circuit Fault 201 af H oL4 Overtorque Detection 2 195 n5 oS Overspeed 196 oo for Simple V f with PG Mechanical Weakening TE 0159 oL5 Detection 1 195 ou
17. Possible Solutions Minor Fault Output H2 LILI 10 Sequence error Check the forward and reverse command sequence and correct the problem Note When minor fault EF detected motor ramps to stop YES LED Operator Display Minor Fault Name EE EFO Option Card External Fault Troubleshooting An external fault condition is present Cause Possible Solutions Minor Fault Output 2 00 10 An external fault was received from the PLC with F6 03 3 causing the drive to continue running when an external fault occurs Remove the cause of the external fault Remove the external fault input from the PLC There is a problem with the PLC program Check the PLC program and correct problems LED Operator Display Minor Fault Name EFI External input terminal S1 External at multi function input terminal S1 EF2 External input terminal S2 Externa at multi function input terminal S2 EF3 Externa input terminal S3 Externa at multi function input terminal S3 Externa input terminal S4 Externa at multi function input terminal S4 OYMC TOEP C71060622 01 OY V1000 User Manual 205 5 5 Alarm Detection ault input terminal S5 ault at multi function input terminal S5 ault input terminal S6 ault at multi function input terminal S6 Possible Solutions Minor Fault Output
18. Switch to the V f motor control method Adjust the values set for the speed feedback detection control time constant n2 02 n2 03 Excessive load inertia in Open Loop Vector Control 228 OYMC TOEP C71060622 01 OY V1000 User Manual 5 9 Troubleshooting without Fault Display W Motor Stalls During Acceleration or With Large Loads Possible Solutions Load is too heavy Take the following steps to resolve the problem Reduce the load Increase the acceleration time Increase motor capacity Although the drive has a Stall Prevention function and a Torque Compensation Limit function accelerating too quickly or trying to drive an excessively large load can exceed the capabilities of the motor m Motor Will Not Accelerate or the Acceleration Time is Too Long Possible Solutions Frequency reference is too low Check the maximum output frequency E1 04 Increase E1 04 if it is set too low Check U1 01 for proper frequency reference Check if a frequency reference signal switch has been set to one of the multi function input terminals Check for low gain level set to terminals Al or A2 H3 03 H3 11 Load is too heavy Reduce the load so that the output current remains within the motor rated current n extruder and mixer applications the load will sometimes increase as the temperature drops Check if the mechanical brake is fully releasing as it should
19. are set for frequency reference H3 02 0 and H3 10 0 the addition of both signals builds the frequency reference Ensure that H3 02 and H3 10 are set appropriately Check the input level set for terminals Al and A2 U1 13 01 14 Poor Speed Control Accuracy Cause Possible Solutions Drive reached the slip compensation limit Check the slip compensation limit C3 03 ncrease the value set to C3 03 Motor rated voltage is set too high in Open Loop Vector Control The input voltage for the drive determines the maximum output voltage A drive with an input of 200 Vac can only output a maximum of 200 Vac Open Loop Vector Control sometimes calculates an output voltage reference value that exceeds the maximum drive output voltage level resulting in a loss of speed control accuracy Use a motor with a lower voltage rating a vector control motor ncrease the input power voltage Auto Tuning did not complete properly for Open Loop Vector Control 230 Perform Auto Tuning again OYMC TOEP C71060622 01 OY V1000 User Manual 5 9 Troubleshooting without Fault Display Deceleration Takes Too Long With Dynamic Braking Enabled Cause Possible Solutions L3 04 is set incorrectly Check the Stall Prevention Level during deceleration L3 04 f a braking resistor option has been installed disable Stall Prevention during deceleration L3 04 0 The deceler
20. compensation gain C4 01 until there is no speed loss but Excessive torque compensation less current Check the settings for all Speed Search related parameters Adjust the current used during Speed Search and the Speed Search deceleration time b3 03 and b3 02 respectively After Auto Tuning the drive enable the Speed Search Estimation Type b3 24 1 Speed Search related parameters are not set correctly Output current fluctuation due to input phase loss LED Operator Display Fault Name Overtorque Detection 1 Check the power supply for phase loss oL3 The current has exceeded the value set for torque detection L6 02 for longer than the allowable time L6 03 Cause Possible Solution Parameter settings are not appropriate for the type of load Check the settings of parameters L6 02 and L6 03 There is a fault on the machine side Check the status of the load e g the machine is locked up Remove the cause of the fault LED Operator Display Fault Name Overtorque Detection 2 nLH oL4 The current has exceeded the value set for Overtorque Detection 2 L6 05 for longer than the allowable time L6 06 Cause Possible Solution Parameter settings are not appropriate for the type of load Check the settings of parameters L6 05 and L6 06 There is a fault on the machine side Check the status of the load e g the machine is locked up Remove
21. curve at acceleration end Drive input power voltage is too Check the voltage high Lower drive input power voltage within the limits listed in the specifications The dynamic braking transistor is damaged Replace the drive The braking transistor is wired Check braking transistor wiring for errors incorrectly Properly rewire the braking resistor device Review the list of possible solutions provided for controlling noise Review the section on handling noise interference and check the control circuit lines main circuit lines and ground wiring Drive fails to operate properly due to noise interference Check the load inertia settings when using KEB overvoltage suppression or Load inertia has been set incorrectly Stall Prevention during deceleration Adjust L3 25 Load Inertia Ratio in accordance with the load Braking function is being used in PM Open Loop Vector Control Connect a braking resistor Adjust the parameters that control hunting Set the hunting prevention gain n1 02 Motor hunting occurs Adjust the AFR time constant n2 02 and n2 03 when in OLV Control Use parameters n8 45 PM Speed Feedback Detection Suppression Gain and n8 47 Pull In Current Compensation Time Constant LED Operator Display Fault Name Input Phase Loss PE PF Drive input power has an open phase or has a large imbalance of voltage between phases Detected when L8 05 1 enab
22. difference between target and detection values at 0 Set the input level for the values relative to one another Use analog input gains H3 03 11 to adjust PID target and feedback signal scaling Reverse drive output frequency and speed detection When output frequency rises the sensor detects a speed decrease Insufficient Motor Torqu Cause Set PID output for reverse characteristics b5 09 1 o Possible Solutions Auto Tuning has not yet been performed required for OLV Control Perform Auto Tuning The control mode was changed after performing Auto Tuning Perform Auto Tuning again Only Line to Line Resistance Auto Tuning was performed Perform Rotational Auto Tuning W Motor Rotates After the Cause Drive Output is Shut Off Possible Solutions Low DC Injection Braking and the drive cannot decelerate properly Adjust the DC Injection braking settings Increase the value of b2 02 DC Injection Braking Current Increase the b2 04 DC Injection Braking Time at Stop m OV or Speed Loss Occu Cause rs When Starting into a Rotating Load Possible Solutions The load is already rotating when the drive is trying to start it Stop the motor using DC Injection braking Restart the motor Increase the value of b2 03 DC Injection Braking Time at start Enable Speed Search at start b3 01 1 Set a multi function input terminal for e
23. function terminals to execute External Speed Search 1 and 2 61 62 NOTE When using PM motor both External Speed Search 1 and 2 perform the same operation LED Operator Display Fault Name P CPF02 LI A D Conversion Error An A D conversion error occurred Cause Possible Solution Control circuit is damaged Cycle power to the drive If the problem continues replace the drive Control circuit terminals have shorted out V AC Check for wiring errors along the control circuit terminals Correct the wiring Check the resistance of the speed potentiometer and related wiring Control terminal input current has exceeded allowable levels Check the input current Reduce the current input to control circuit terminal V to 20 mA LED Operator Display Fault Name rac CPF03 na LI MTLULIZ PWM Data Error There is a problem with the PWM data Cause Possible Solution Drive hardware is damaged Replace the drive LED Operator Display Fault Name 184 EEPROM Data Error There is an error in the data saved to EEPROM OYMC TOEP C71060622 01 OY V1000 User Manual Cause 5 4 Fault Detection Possible Solution Control circuit is damaged Cycle power to the drive If the problem continues replace the drive The power supply was switched off when parameter were wri
24. load Increase the acceleration and deceleration times C1 01 through C1 08 Adjust the preset V f pattern E1 04 through E1 10 This will mainly involve reducing E1 08 and E1 10 Be careful not to lower E1 08 and E1 10 excessively because this reduces load tolerance at low speeds Check the motor rated current Enter the motor rated current as indicated on the motor nameplate E2 01 Ensure the motor cooling system is operating normally Repair or replace the motor cooling system LED Operator Display Fault Name Motor Overload The electrothermal sensor tripped overload protection OYMC TOEP C71060622 01 OY V1000 User Manual 193 Troubleshooting 5 4 Fault Detection Cause Possible Solution Load is too heavy Reduce the load Cycle times are too short during acceleration and deceleration Increase the acceleration and deceleration times C1 01 through C1 08 Drive overloaded at low speeds Overload may occur at low speeds when using a general purpose motor even if operating within the rated current limitation Reduce the load Increase the speed If the drive is supposed to operate at low speeds either increase the motor capacity or use a motor specifically designed to operate with the drive Although a special type of motor is being used the motor protection selection is set for a general purpose motor L1 01 1 Set L1 01 2
25. or neither equals 0 Set E5 09 or E5 24 to the correct value and set the other to 0 Set the motor rated current for PM to 0 E5 03 Note Use U1 18 to find which parameters are set outside the specified setting range Other errors are given precedence over OPE08 when multiple errors occur at the same time LED Operator Display Error Name oPE09 PID Control Selection Fault PID control function selection is incorrect Requires that PID control is enabled b5 01 1 to 4 Cause Possible Solutions The following simultaneous contradictory settings b5 15 not 0 0 PID Sleep Function Operation Level The stopping method is set to either DC injection braking or coast to stop with a timer b1 03 2 or 3 Set b5 15 to another value besides 0 Set the stopping method to coast to stop or ramp to stop b1 03 0 or 1 LED Operator Display Error Name V f Data Setting Error The following setting errors have occurred where E1 04 is greater than or equal to E1 06 is greater than or equal to E1 07 is greater than or equal to E1 09 Or the following setting errors have occurred E3 04 is greater than or equal to E3 06 is greater than or equal to E3 07 is greater than or equal to E3 09 Possible Solutions Correct the settings for E1 04 06 07 and 09 or E 04 06 07 09 for motor 2 Error Name Carrier Frequency Setting Error
26. ov Overvoltage 196 ol oL7 High Slip Braking OL 195 BE Input Phase Loss 197 o Pr oPr Operator Connection Fault 796 Note If faults CPF11 through CPF19 occur the LED operator will display LP EDD or LEE if OYMC TOEP C71060622 01 OY V1000 User Manual 179 D Troubleshooting 5 3 Drive Alarms Faults and Errors W Minor Faults and Alarms When a minor fault or alarm occurs the ALM LED flashes and the text display shows an alarm code A fault has occurred if the text remains lit and does not flash Refer to Alarm Detection on page 202 An overvoltage situation for example can trigger both faults and minor faults It is therefore important to note whether the LEDs remain lit or if the LEDs flash Table 5 5 Minor Fault and Alarm Displays Minor Fault LED Operator Display Output H2 LILI 10 bb Drive Baseblock No output Option Card Communications Error YES Serial Communication Transmission Error YES MEMOBUS Modbus Communication Error YES Can not Reset YES Excessive Speed Deviation for Simple V f with PG YES Drive Disabled YES Run Command Input Error YES Option Card External Fault YES External Fault input terminal S1 to S6 Excessive PID Feedback PID Feedback Loss Safe Disable Signal Input Safe Disable Signal Input MEMOBUS Modbus Test Mode Fault Mechanical Weakening Detection 1 Mechanical Weakening Detection 2
27. problem with the drive input power voltage Check the voltage Lower the voltage of the drive input power so that it is within the limits listed in the specifications Drive internal circuitry is worn Check the maintenance time for the capacitors U4 05 Replace the drive if U4 05 exceeds 90 The drive input power transformer is not large enough and voltage drops when the power is switched on Check for a tripped alarm when the magnetic contactor line breaker and leakage breaker are turned on Check the capacity of the drive input power transformer Air inside the drive is too hot Check the temperature inside the drive The CHARGE indicator light is broken or disconnected 212 Replace the drive OYMC TOEP C71060622 01 OY V1000 User Manual 5 6 Operator Programming Errors 5 6 Operator Programming Errors An Operator Programming Error oPE occurs when an inappropriate parameter is set or an individual parameter setting is inappropriate The drive will not operate until the parameter is set correctly however no alarm or fault outputs will occur If an oPE occurs investigate the cause and refer to Table 5 10 for the appropriate action When oPE error is displayed press the ENTER button to display U1 34 oPE fault constant This monitor displays the parameter causing the oPE error Codes Causes and Possible Solutions Table 5 10 oPE Codes Causes and Poss
28. such as switches or relays do not cause noise and A communications data error use surge suppressors if required occurred due to noise Use cables recommended by OYMC or another type of shielded line Ground the shield on the controller side or on the drive input power side Separate all wiring for communications devices from drive input power lines Install a noise filter to the input side of the drive input power Replace the option card if there are no problems with the wiring and the error The option card is damaged continues to occur The connector pins on the option card are not properly lined up with the connector pins on the drive Reinstall the option card LED Operator Display Fault Name MEMOBUS Modbus Communication Error Control data was not received for the CE detection time set to H5 09 The option card is not properly connected to the drive CE Cause Possible Solution Check for faulty wiring Correct the wiring Check for loose wiring and short circuits Repair as needed Faulty communications wiring or a short circuit exists Check the various options available to minimize the effects of noise Counteract noise in control circuit main circuit and ground wiring Ensure that other equipment such as switches or relays do not cause noise and A communications data error use surge suppressors if required occurred due to noise Use OYMC recommended cabl
29. 180 OYMC TOEP C71060622 01 OY V1000 User Manual 5 3 Drive Alarms Faults and Errors Minor Fault LED Operator Display Output H2 LILI 10 dWAL FBD s Alarm YES HCA Current Alarm YES oH Heatsink Overheat YES Drive Overheat YES Motor Overheat YES Overtorque 1 YES Overtorque 2 YES Overspeed for Simple V f with PG YES Overvoltage YES MEMOBUS Modbus Test Mode Complete No output PG Disconnect for Simple V f with PG YES During Run 2 Motor Switch Command Input YES Undertorque 1 YES Undertorque 2 YES Undervoltage YES Operation Errors Table 5 6 Operation Error Displays LED Operator LED Operator Display Display uns Name oPE01 Drive Unit Setting Error SQUE oPE08 Parameter Selection Error Parameter Setting Range oPE09 PID Control Selection Error Error oPE02 oPE03 Qu HMM Input Setting x oPE10 V f Data Setting Error OYMC TOEP C71060622 01 OY V1000 User Manual 181 5D Troubleshooting 5 3 Drive Alarms Faults and Errors LED Operator Display Name LED Operator Display Name oPE04 Terminal Board Mismatch Error oPE11 Carrier Frequency Setting Error oPE05 Run Command Selection Error i oPE13 Pulse Train Monitor Selection Error oPE07 Multi Function Analog Input Selection Error Auto Tuning Errors Table 5 7 Auto Tuning Er
30. 2 03 do not match This data is required only when Auto Tuning for Open Loop Vector Control or when performing Stationary Auto Tuning Check the motor rated current and no load current Correct the settings of parameters T1 04 and E2 03 Base frequency and base motor rotations T1 05 and T1 07 do not match Set T1 05 and T1 07 to the correct value LED Operator Display Error Name Er 02 Minor Fault Possible Solutions Motor data entered during Auto Tuning was incorrect Motor data entered to the 1 parameters does not match the information written on the motor nameplate Enter the correct data Start Auto Tuning over again and enter the correct information The wiring is faulty Load is too heavy Check the wiring and correct defective connections Check around the machine Check the load Use the information on page 237 to find out what caused the problem LED Operator Display Error Name 218 STOP Button Input OYMC TOEP C71060622 01 OY V1000 User Manual 5 7 Auto Tuning Fault Detection Cause Possible Solutions Auto Tuning canceled by pressing STOP button Auto Tuning did not complete properly and will have to be performed again LED Operator Display Error Name u Er 04 Er Line to Line Resistance Error Cause Possible Solutions Motor data entered during Auto Tuning was incorrect Motor data en
31. 2 is set to 3 but no option board is installed Cause Possible Solutions Frequency reference is assigned to an option card b1 01 3 that is not connected to the drive The Run command is assigned to an option card b1 02 3 that is not connected to the drive Reconnect the option card to the drive Frequency reference is assigned to the pulse train input b1 01 4 but terminal RP is not set for pulse train input H6 01 is greater than 0 Set H6 01 to 0 LED Operator Display Error Name oPE07 Multi Function Analog Input Selection Error A contradictory setting is assigned to multi function analog inputs H3 02 through to H3 10 and PID functions conflict Ca Possible Solutions H3 02 and H3 10 are set to the same value Change the settings to H3 02 and H3 10 so that functions no longer conflict Note Both 0 primary analog frequency reference and F Not Used can be set to H3 02 and H3 10 at the same time The following simultaneous contradictory settings H3 02 or H3 10 B PID Feedback and H6 01 Pulse Train Input 1 PID Feedback The following simultaneous contradictory settings H3 02 or H3 10 C PID Target Value and H6 01 2 pulse train input sets the PID target value The following simultaneous contradictory settings H3 02 or H3 10 C PID Target Value and b5 18 1 enables b5 19 as the target PID value The followi
32. 22 01 V1000 User Manual 5 4 Fault Detection Check if sudden drive acceleration triggers an overvoltage alarm Acceleration time is too short Increase the acceleration time Use longer S curve acceleration and deceleration times The braking torque was too high causing regenerative energy to charge the DC Excessive braking load bus Reduce the braking torque use a braking option or lengthen decel time Surge voltage entering from the Install a DC reactor Note Voltage surge can result from thyristor convertor drive input power and phase advancing capacitor using same drive main input power supply Ground fault in the output circuit causing the DC bus capacitor to overcharge Check the motor wiring for ground faults Correct grounding shorts and turn the power back on Check the settings for Speed Search related parameters Enable Speed Search Retry function b3 19 greater than or equal to 1 to 10 Adjust the current level during Speed Search and the deceleration time b3 02 and b3 03 respectively Perform Line to Line Resistance Auto Tuning and then enable Speed Estimation Type Speed Search b3 24 1 Improper Setting of Speed Search related parameters Includes Speed Search after a momentary power loss and after a fault restart Excessive regeneration when Enable the Overvoltage Suppression function L3 11 1 overshoot occurs after acceleration Lengthen the S
33. A Motor Switch Command and UP2 DOWN2 Command 16 vs 75 76 Check for contradictory settings assigned to the multi function input terminals at the same time Correct setting errors One of the following settings was entered while HI LILI 2 External Reference 1 2 b1 15 4 Pulse Train Input and H6 01 Pulse Train Input Function Selection not 0 Frequency Reference b1 15 or b1 16 set to 3 but no option card connected Although b1 15 1 Analog Input and H3 02 or H3 10 are set to 0 Frequency Bias 2 00 38 Drive Enabled but H1 LILI is not set to 6A Drive Enable HI LILI 7E Direction Detection although H6 01 is not set to 3 Simple V f with PG Correct the settings for the multi function input terminal parameters LED Operator Display Error Name 214 Initialization required OYMC TOEP C71060622 01 OY V1000 User Manual 5 6 Operator Programming Errors Cause Possible Solutions The drive control board or terminal board has been replaced and the parameter settings between the control board and the terminal board no longer match To load the parameter settings to the drive that are stored in the terminal board set 1 03 to 5550 Initialize parameters after drive replacement by setting A1 03 to 1110 or 2220 LED Operator Display Error Name BE PERS af oPE05 Run Command Selection Error The Run command selection parameter b1 0
34. CD operator Next reconnect the operator and turn the drive input power back on LED Operator Display Fault Name nh oS Overspeed Simple V f with PG Pulse input RP indicates that motor speed feedback exceeded F1 08 setting Cause Possible Solution Overshoot or undershoot is occurring Adjust the gain by using the pulse train input parameters H6 02 through H6 05 Increase the settings for C5 01 Speed Control Proportional Gain 1 and reduce C5 02 Speed Control Integral Time 1 Incorrect PG pulse settings Set the H6 02 Pulse Train Input Scaling 100 the number of pulses during maximum motor revolutions Inappropriate parameter settings Check the setting for the overspeed detection level and the overspeed detection time F1 08 and F1 09 LED Operator Display Fault Name Overvoltage Voltage in the DC bus has exceeded the overvoltage detection level For 200 V class approximately 410 V For 400 V class approximately 820 V 740 V when E1 01 is less than 400 Cause Possible Solution Deceleration time is too short and regenerative energy flows from the motor into the drive 196 Increase the deceleration time C1 02 04 06 08 Install a braking resistor or a dynamic braking resistor unit Enable stall prevention during deceleration L3 04 1 Stall prevention is enabled as the default setting OYMC TOEP 710606
35. Display Minor Fault Name 208 Motor Overheat The motor overheat signal entered to a multi function analog input terminal exceeded the alarm level H3 02 or H13 10 E OYMC TOEP C71060622 01 OY V1000 User Manual Cause 5 5 Alarm Detection Possible Solutions OO 10 Minor Fault H2 Motor thermostat wiring is fault PTC input Repair the PTC input wiring YES There is a fault on the machine side e g the machine is locked up Check the status of the machine Remove the cause of the fault YES Motor has overheated Check the load size accel decel times and cycle times Decrease the load Increase accel and decel times C1 01 to C1 08 Adjust the preset V f pattern E1 04 through E1 10 This will mainly involve reducing E1 08 and E1 10 Note Do not lower E1 08 and E1 10 excessively because this reduces load tolerance at low speeds Check the motor rated current Enter motor rated current on motor nameplate E2 01 Ensure the motor cooling system is operating normally Repair or replace the motor cooling system LED Operator Display Minor Fault Name oL3 oL Overtorque 1 Drive output current or torque in OLV was greater than L6 02 time set in L6 03 or longer than the Cause Possible Solutions DID 10 Minor Fault H2 Inappropriate parameter settings Check parameters L6 02 and L6 03
36. ED Operator Display Fault Name Uv3 Undervoltage 3 Inrush Prevention Circuit Fault The inrush prevention circuit has failed Possible Solution The contactor on the inrush prevention circuit is damaged Cycle power to the drive Check if the fault reoccurs Replace the drive if the fault continues to occur Check monitor U4 06 for the performance life of the inrush prevention circuit Replace the drive if U4 06 exceeds 90 OYMC TOEP C71060622 01 OY V1000 User Manual 201 5D Troubleshooting 5 5 Alarm Detection 5 5 Alarm Detection Alarms are drive protection functions that do not operate the fault contact The drive will return to original status when the cause of the alarm has been removed During an alarm condition the Digital Operator display flashes and an alarm output is generated at the multi function outputs H2 01 to H2 03 if programmed Investigate the cause of the alarm and refer to Table 5 9 for the appropriate action Alarm Codes Causes and Possible Solutions Table 5 9 Alarm Codes Causes and Possible Solutions LED Operator Display Minor Fault Name bb 50 Baseblock Drive output interrupted as indicated by an external baseblock signal Cause Possible Solutions Minor Fault H2 OO 10 External baseblock signal entered via multi function input terminal S1 to S6 Check external sequence and baseblock signal input
37. P C71060622 01 OY V1000 User Manual 213 5D Troubleshooting 5 6 Operator Programming Errors Run Stop command for 2 wire sequence 2 was set H1 O10 42 but forward reverse command H1 O10 43 was not Drive Enable is set to multi function input S1 or S2 H1 01 6A or H1 02 6A Correctly set functions that need to be enabled in combination with other functions Two of the following functions are set at the same time Up Down Command 10 vs 11 Up 2 Down 2 Command 75 vs 76 Hold Accel Decel Stop A Analog Frequency Reference Sample Hold 1E Offset Frequency 1 2 3 Calculations 44 45 46 Check if contradictory settings have been assigned to the multi function input terminals at the same time Correct setting errors The Up Down command 10 11 is enabled at the same time as PID control b5 01 Disable control PID b5 01 0 or disable the Up Down command One of the following settings at the multi function input terminals External Search Command 1 and External Search Command 2 61 vs 62 Fast Stop N O and Fast Stop N C 15 vs 17 KEB for Momentary Power Loss and High Slip Braking 65 66 7A 7B vs 68 Motor Switch Command and Accel Decel Time 2 16 vs 1A KEB Command and KEB Command 2 65 66 vs 7A 7B FWD Run Command or REV and FWD REV Run Command 2 wire 40 41 vs 42 43 External DB Command and Drive Enable 60 vs 6
38. Time Constant Setting n1 05 Hunting Prevention Time Constant in Reverse Direction when hunting occurs in reverse rotation direction only Gain is too low when using PID control Check the period of oscillation and adjust P I and D settings accordingly Ensure that noise is not affecting the signal lines The frequency reference is assigned to an Separate main circuit wiring and control circuit wiring external source Use twisted pair cables or shielded wiring for the control circuit ncrease the analog input time filter constant H3 13 The cable between the drive and motor is Perform Auto Tuning too long Reduce the length of the cable OYMC TOEP C71060622 01 OY V1000 User Manual 233 5D Troubleshooting 5 9 Troubleshooting with out Fault Display PID output fault Possible Solutions No PID feedback input Check the multi function analog input terminal settings Set multi function analog input terminal Al or A2 for PID feedback H3 02 or H3 10 B A signal input to the terminal selection for PID feedback is necessary Check the connection of the feedback signal Check the various PID related parameter settings No PID feedback input to the terminal causes the value detected to be 0 causing a PID fault and the drive to operate at max frequency The level of detection and the target value do not correspond with each other PID control keeps the
39. YES There is a fault on the machine side e g the machine is locked up Check the status of the machine Remove the cause of the fault YES LED Operator Display Minor Fault Name I TR y oL4 Overtorque 2 Drive output current or torque in OLV was greater than L6 05 time set in L6 06 or longer than the Cause Possible Solutions Minor Fault Output 2 00 10 Parameter settings are not appropriate Check parameters L6 05 and L6 06 YES There is a fault on the machine side e g the machine is locked up Check the status of the machine being used Remove the cause of the fault YES LED Operator Display Minor Fault Name Overspeed for Simple V f with PG Pulse input RP indicates that motor speed feedback exceeded F1 08 setting OYMC TOEP C71060622 01 OY V1000 User Manual 209 5D Troubleshooting 5 5 Alarm Detection Minor Fault Possible Solutions Output 2 0 10 Adjust the gain by using the pulse train input parameters H6 02 through H6 05 Adjust the speed feedback accuracy Increase the settings for C5 01 Speed Control Proportional Gain 1 and reduce C5 02 Speed Control Integral Time 1 PG pulse settings are Set the H6 02 Pulse Train Input Scaling 100 the number incorrect of pulses during maximum motor revolutions Overshoot or undershoot is occurring Parameter settings are Ch
40. and cannot be entered from the external terminals or option card during fault reset Turn off the run command YES LED Operator Display Minor Fault Name net dEv I Speed Deviation for Simple V f with PG According to the pulse input RP the speed deviation is greater than the setting in F1 10 for a time longer than the setting in F1 11 Cause Possible Solutions Minor Fault Output 2 00 10 Load is too heavy Reduce the load YES Acceleration and deceleration times are set too short Increase the acceleration and deceleration times C1 01 through C1 08 YES The load is locked up Check the machine YES Parameter settings are inappropriate Check the settings of parameters F1 10 and F1 11 YES The motor brake engaged 204 Ensure the brake releases properly YES OYMC TOEP C71060622 01 OY V1000 User Manual LED Operator Display 5 5 Alarm Detection Minor Fault Name one dnE Drive Disabled Cause Possible Solutions Minor Fault Output 2 00 10 Drive Enable is set to a multi function contact input 0 6A and that signal was switched off Check the operation sequence YES LED Operator Display Minor Fault Name EF Forward Reverse Run Command Input Error Both forward run and reverse run closed simultaneously for over 0 5 s
41. ation time is set too long Set deceleration to more appropriate time C1 02 C1 04 C1 06 C1 08 Insufficient motor torque Assuming parameter settings are normal and that no overvoltage occurs when there is insufficient torque it is likely that the demand on the motor has exceeded the motor capacity Use a larger motor Reaching the torque limit Check the settings for the torque limit L7 01 through L7 04 f the torque limit is enabled deceleration might take longer than expected because the drive cannot output more torque than the limit setting Ensure the torque limit is set to a large enough value ncrease the torque limit setting f multi function analog input terminal A1 or A2 is set to torque limit H3 02 or H3 10 equals 10 11 12 or 15 ensure that the analog input levels are set to the correct levels Ensure H3 02 and H3 10 are set to the right levels Ensure the analog input is set to the correct value Load exceeded the internal torque limit determined by the drive rated current 5D Troubleshooting Switch to a larger capacity drive m Motor Hunting Occurs When Operating With a Light Load Cause Possible Solutions Carrier frequency is too high Lower the carrier frequency setting C6 02 Large V f setting value at low speeds triggers overexcitation Select the proper V f pattern E1 03 Use parameters E1 04 through E1 10 to set the V f pattern
42. card is incompatible with the drive Use a compatible option card LED Operator Display Fault Name OYMC TOEP C71060622 01 OY V1000 User Manual Option Card Fault Port A Replace the option card 191 Troubleshooting 5 4 Fault Detection Cause Possible Solution The option card is not connected properly to the drive Turn the power off and reconnect the option card LED Operator Display Fault Name oFA03 Option Card Fault port A Option card self diagnostic error oFA04 Option Card Fault port A An error occurred attempting to write to the option card memory oFA30 thru oFA43 Option Card Fault port A Communication ID error Possible Solution Option card or hardware is damaged Replace the option card Contact OYMC or an OYMC representative for consultation LED Operator Display Fault Name oH Heatsink Overheat The temperature of the heatsink exceeded the value set to L8 02 90 100 C Default value for L8 02 is determined by drive capacity 02 04 Possible Solution Surrounding temperature is too high Check the temperature surrounding the drive Verify temperature is within drive specifications Improve the air circulation within the enclosure panel Install a fan or air conditioner to cool the surrounding area Remove anything near the drive that might be producing excessive heat L
43. ce level Check the current level of the terminal Set the current to the control circuit terminal to be 20 mA or less LED Operator Display Fault Name oH3 Motor Overheat Alarm PTC Input The motor overheat signal to analog input terminal A1 or A2 exceeded the alarm detection level Detection requires multi function analog input H3 02 or H3 10 be set to E Possible Solution Motor has overheated Check the size of the load the accel decel times and the cycle times Decrease the load Increase the acceleration and deceleration times C1 01 through C1 08 Adjust the preset V f pattern E1 04 through E1 10 This will mainly involve reducing E1 08 and E1 10 Be careful not to lower E1 08 and E1 10 excessively as this reduces load tolerance at low speeds Check the motor rated current Enter the motor rated current as indicated on the motor nameplate 2 01 Ensure the motor cooling system is operating normally Repair or replace the motor cooling system LED Operator Display Fault Name oH4 Motor Overheat Fault PTC Input The motor overheat signal to analog input terminal Al or A2 exceeded the fault detection level Detection requires that multi function analog input H3 02 or H3 10 Possible Solution Motor has overheated Check the size of the load the accel decel times and the cycle times Decrease the
44. ck Loss FbL This fault occurs when PID Feedback Loss Detection is programmed to fault b5 12 2 and the PID Feedback lt PID Feedback Loss Detection Level b5 13 for the PID Feedback Loss Detection Time b5 14 Cause Possible Solution Parameters are not set appropriately Check the settings of parameters b5 13 and b5 14 Wiring for PID feedback is incorrect Correct the wiring There is a problem with the Check the sensor on the controller side feedback sensor If damaged replace the sensor LED Operator Display Fault Name Ground Fault LE GF Current shorted to ground exceeded 50 of rated current on output side of the drive Setting L8 09 to 1 enables ground fault detection in models 5 5 kW or larger Cause Possible Solution Check the insulation resistance of the motor Replace the motor D Troubleshooting Motor insulation is damaged Check the motor cable A damaged motor cable is creating a Remove the short circuit and turn the power back on short circuit Check the resistance between the cable and the ground terminal Replace the cable The leakage current at the drive Reduce the carrier frequency output is too high Reduce the amount of stray capacitance The value set exceeds the allowable setting range while the drive automatically adjusts the current offset this happens only attempting to restart a PM motor that i
45. d The STOP button is disabled when 02 02 is set to 0 Motor is not producing enough torque in the V f motor control method Ensure the selected V f pattern corresponds with the characteristics of the motor being used Set the correct V f pattern to E1 03 When 1 03 F increase both the minimum and mid output frequency voltages E1 08 E1 10 Increase the frequency reference so that it is higher than the minimum frequency reference E1 09 Perform Line to Line Resistance Auto Tuning when using particularly long motor cables Increase the torque compensation gain C4 01 Motor is not producing enough torque in Open Loop Vector Control Execute Rotational Auto Tuning f the motor cables are replaced with longer cables after Rotational Auto Tuning was performed Auto Tuning may need to be repeated due to voltage drop across the line Check if the torque limit parameters have been set too low L7 01 through L7 04 Reset the torque limit back to its default setting 200 Increase both the minimum and mid output frequency voltages E1 08 and E 10 The drive is set for both 2 wire and 3 wire sequence at the same time The drive is set for a 3 wire sequence when one of parameters H1 03 through H1 06 is set to 0 If the drive is supposed to be set up for a 2 wire sequence then ensure parameters H1 03 through H1 06 are not set to 0 If the drive is supposed to be set u
46. d response Motor hunting and oscillation To improve motor torque speed response gradually reduce this setting by 2 ms and check the performance f motor hunting and oscillation occur gradually increase this setting by 10 ms Note Ensure that C4 02 lt C4 06 When making adjustments to C4 02 increase n2 02 AFR Time Constant proportionally 20 to 100 ms Slip Compensation Primary Delay Time Constant C3 02 Poor speed response and stability response is slow gradually decrease the etting by 10 ms speed is unstable gradually increase the etting by 10 ms 200 ms dq 100 to 500 ms Slip Compensation Gain C3 01 Poor speed precision f speed is too slow gradually increase the setting by 0 1 ms f speed is too fast gradually decrease the setting by 0 1 ms 0 5 to 1 5 Carrier Frequency Selection C6 02 Motor noise Control motor hunting and oscillation occur at speeds below 10 Hz f there is too much motor noise the carrier frequency is too high f motor hunting and oscillation occur at low speeds reduce the carrier frequency The default setting for the carrier frequency depends on the drive capacity 02 04 and Drive Duty Selection C6 01 dep on drive capacity 0 to the default setting 5D Troubleshooting Mid Output Voltage A E1 08 Minimum Output Voltage E1 10 Poor motor torque at low speeds Poor speed re
47. e Possible Solution Reverse run prohibited is selected If b1 04 Reverse Prohibit Operation is set to reverse run prohibited the drive will not accept a reverse run command Set b1 04 0 to allow reverse run operation 236 OYMC TOEP C71060622 01 OY V1000 User Manual 5 9 Troubleshooting without Fault Display m Motor Operates at a Higher Speed than the Speed Command Cause Possible Solution PID is enabled If the PID mode is enabled b5 01 1 to 4 the drive output frequency will change to regulate the process variable to the target setpoint If PID operation is not target disable PID by setting b5 01 0 The PID can command a speed up to maximum output frequency E1 04 Poor Speed Control Accuracy Above Base Speed in Open Loop Vector Motor Control Method Cause Possible Solution The maximum output voltage of the drive is determined by its input voltage Vector control uses voltage to control the currents within the motor If the vector control voltage reference value exceeds Use a motor with a lower rated voltage compared to the input voltage the drive output voltage capability the speed control accuracy will decrease because the motor currents cannot be properly controlled Peripheral Devices Affected by Drive Operation Possible Solutions Change the Carrier Frequency Selection C6 02 to lower the carrier frequency This will help to reduce the amoun
48. e drive and reset the fault Press the RESET button on the digital operator Close then open the fault signal Fault Reset Switch digital input via terminal S4 54 is set __7S4 Fault Reset Digital Input fault reset as default H1 04 12 SC Digital Input Common Resetting via Fault Reset Digital Input S4 If the above methods do not reset the fault turn off the drive main power supply Reapply power after LED operator display is out OYMC TOEP C71060622 01 OY V1000 User Manual 223 D Troubleshooting 5 9 Troubleshooting without Fault Display 5 9 Troubleshooting without Fault Display This section is for troubleshooting problems that do not trip an alarm or fault Cannot Change Parameter Settings Cause Possible Solutions The drive is running the motor i e the Run command is present Stop the drive and switch over to the Programming Mode Most parameters cannot be edited during run The Access Level is set to restrict access to parameter settings Set the Access Level to allow parameters to be edited A1 02 2 The operator is not in the Parameter Setup Mode the LED screen will display See what mode LED parameter is current set for Parameters cannot be edited when in the Setup Mode STUP Switch modes so that PAr appears on the screen A multi function contact input terminal is set to allow or re
49. e is too high If it is disabled there is no fault but the ripple is still too high thereby the capacitors are stressed more and lose lifetime Replace the drive LED Operator Display Fault Name or LIU PGo PG Disconnect for Simple V f with PG No PG pulses are received for longer than the time set to F1 14 Cause Possible Solution Pulse input RP is disconnected Reconnect the pulse input RP Pulse input RP wiring is wrong Correct the wiring Motor brake engaged Ensure the motor brake releases properly LED Operator Display Fault Name rH Braking Resistor Overheat Braking resistor protection was triggered Fault detection is enabled when L8 01 1 disabled as a default Cause Possible Solution Deceleration time is too short and excessive regenerative energy is flowing back into the drive Check the load deceleration time and speed Reduce the load Increase the acceleration and deceleration times C1 01 through C1 08 Replace the braking option with a larger device that can handle the power that is discharged Excessive braking inertia Recalculate braking load and braking power Then try reducing the braking load and checking the braking resistor settings and improve braking capacity The proper braking resistor has not been installed Check the specifications and conditions for the braking resistor de
50. e maximum allowable value Cause Possible Solutions Minor Fault H2 OO 10 Surrounding temperature is too high Check the surrounding temperature Improve the air circulation within the enclosure panel nstall a fan or air conditioner to cool surrounding area Remove anything near drive that may cause extra heat YES Internal cooling fan has stopped Replace the cooling fan Refer to Cooling Fan Replacement on page 250 After replacing the drive reset the cooling fan maintenance parameter to 04 03 0 Airflow around the drive is restricted Provide proper installation space around the drive as indicated in the manual Refer to Correct Installation Spacing on page 40 Allow for the specified space and ensure that there is sufficient circulation around the control panel Check for dust or foreign materials clogging cooling fan Clear debris caught in the fan that restricts air circulation LED Operator Display Minor Fault Name ua alc oH2 Drive Overheat Warning Drive Overheat Warning was input to a multi function input terminal S1 through S6 H1 DII B Cause Possible Solutions Minor Fault H2 OO 10 An external device triggered and overheat warning in the drive Search for the device that tripped the overheat warning Solving the problem will clear the warning YES LED Operator
51. eck the amount of torque compensation Reduce the torque compensation gain C4 01 until there is no speed loss and less current Drive fails to operate properly due to noise interference Review the possible solutions provided for handling noise interference Review the section on handling noise interference and check the control circuit lines main circuit lines and ground wiring Overexcitation gain is set too high Check if fault occurs simultaneously to overexcitation function operation Consider motor flux saturation and reduce the value of n3 13 Overexcitation Deceleration Gain Run command applied while motor was coasting Enable Speed Search at start b3 01 1 Program the Speed Search command input through one of the multi function contact input terminals 00 61 or 62 The wrong motor code has been entered for PM Open Loop Vector Yaskawa motors only Enter the correct motor code to E5 01 to indicate that a PM motor is connected The motor control method and motor do not match Check which motor control method the drive is set to A1 02 For IM motors set A1 02 0 or 2 For PM motors set A1 02 5 The motor cable is too long Use a larger drive LED Operator Display Fault Name oFA00 Option Card Fault Port A The option card is incompatible with the drive Possible Solution The option
52. eck the setting for the overspeed detection level and the inappropriate overspeed detection time F1 08 and F1 09 LED Operator Display Minor Fault Name DC Bus Overvoltage The DC bus voltage exceeded the trip point For 200 V class approximately 410 V For 400 V class approximately 820 V 740 V when E1 01 lt 400 Minor Fault H2 OO 10 Possible Solutions Install a DC reactor or an AC reactor Surge voltage present in the Voltage surge can result from a thyristor convertor and a phase drive input power advancing capacitor operating on the same drive input power system YES The motor has short circuited Ground current has over charged the main circuit capacitors via the drive input power Check the motor power cable relay terminals and motor terminal box for short circuits Correct grounding shorts and turn the power back on Review possible solutions for handling noise interference Review section on handling noise interference and check Noise interference causes the control circuit lines main circuit lines and ground wiring drive to operate incorrectly If the magnetic contactor is identified as a source of noise install a surge protector to the MC coil Set number of fault restarts L5 01 to a value other than 0 LED Operator Display Minor Fault Name pace PASS MEMOBUS Modbus Comm Test Mode Complete Minor Fault Cause Possible Soluti
53. es or another type of shielded line Ground the shield on the controller side or on the drive input power side Separate all wiring for communications devices from drive input power lines Install a noise filter to the input side of the drive input power OYMC TOEP C71060622 01 OY V1000 User Manual 183 5D Troubleshooting 5 4 Fault Detection LED Operator Display Fault Name CF Control Fault A torque limit was reached continuously for three seconds or longer during a ramp to stop while in Open Loop Vector Control Cause Possible Solution Motor parameters are not set properly Check the motor parameter settings and repeat Auto Tuning Torque limit is too low Set the torque limit to the most appropriate setting L7 01 through 17 04 Load inertia is too big Adjust the deceleration time C1 02 04 06 08 Set the frequency to the minimum value and interrupt the run command when the drive finishes decelerating LED Operator Display Fault Name CoF Current Offset Fault There is a problem with the current detection circuit or the drive attempted to start a coasting PM motor Cause Possible Solution While the drive automatically adjusted the current offset the calculated value exceeded the allowable setting range This problem may occur when attempting to restart a coasting PM motor Enable Speed Search at start b3 01 1 Use the multi
54. f the drive just before the fault occurred 3 Remove the cause of the fault and reset Note To find out what faults were triggered check U2 02 Fault History Information on drive status when the fault occurred such as the frequency current and voltage can be found in U2 03 through U2 17 Refer to Viewing Fault Trace Data after Fault on page 223 for information on how to view fault trace data Note When the fault continues to be displayed after cycling power remove the cause of the fault and reset If the drive still has power after a fault occurs 1 Look at the LED operator for information on the fault that occurred 2 Fault Displays Causes and Possible Solutions on page 183 3 Reset the fault Refer to Fault Reset Methods on page 223 222 OYMC TOEP C71060622 01 OY V1000 User Manual 5 8 Diagnosing and Resetting Faults Viewing Fault Trace Data after Fault Step Display Result Turn on the drive input power The first screen displays Press until the monitor screen is displayed Press to display the parameter setting screen Press and gt until U2 02 Fault History is displayed A Press to view most recent fault here oC Press to view drive status information when fault occurred Parameters U2 03 through U2 17 help determine cause of fault Fault Reset Methods After the Fault Occurs Procedure Fix the cause of the fault restart th
55. ge from the drive input power Check the voltage Correct the voltage to within range listed in drive input power specifications The power has been interrupted Correct the drive input power Drive internal circuitry has become worn Check the maintenance time for the capacitors U4 05 Replace the drive if U4 05 exceeds 90 The drive input power transformer is not large enough and voltage drops after switching on power Check the capacity of the drive input power transformer Air inside the drive is too hot Check the drive s internal temperature Problem with the CHARGE indicator 200 Replace the drive OYMC TOEP C71060622 01 OY V1000 User Manual LED Operator Display 5 4 Fault Detection Fault Name Uv2 Control Power Supply Voltage Fault Voltage is too low for the control drive input power Cause Possible Solution L2 02 changed from its default value in drive that is 7 5 kW or smaller without installing a Momentary Power Loss Ride Thru Correct parameter L2 02 setting or install optional Momentary Power Loss Ride Thru unit The wiring for the control power supply is damaged Cycle power to the drive Check if the fault reoccurs Replace the drive if the fault continues to occur Internal circuitry is damaged Cycle power to the drive Check if the fault reoccurs Replace the drive if the fault continues to occur L
56. h on the machine side Accel Decel Time C1 01 through C1 11 Adjusting accel and decel times will affect the torque presented to the motor during acceleration or deceleration S Curve Characteristics C2 01 through C2 04 Prevents shock at the beginning and end of acceleration and deceleration Jump Frequency d3 01 through d3 04 Skips over the resonant frequencies of connected machinery Analog Filter Time Constant H3 13 Prevents fluctuation in the analog input signal due to noise Stall Prevention L3 01 through L3 06 L3 11 Prevents motor speed loss and overvoltage Used when the load is too heavy and also during sudden acceleration deceleration Adjustment is not normally required because Stall Prevention is enabled as a default Disable Stall Prevention during deceleration L3 04 0 when using braking resistor Torque Limits L7 01 through L7 04 L7 06 L7 07 176 Sets the maximum torque for Open Loop Vector Control Ensure that the drive capacity is greater than the motor capacity when increasing this setting Be careful when reducing this value because motor speed loss may occur with heavy loads OYMC TOEP 71060622 01 V1000 User Manual 5 3 Drive Alarms Faults and Errors 5 3 Drive Alarms Faults and Errors Types of Alarms Faults and Errors Check the LED operator for information about possible faults if the drive or motor fails to operate
57. hunting and oscillation occur at speeds up to 40 Hz lower the carrier frequency The default setting for the carrier frequency depends on the drive capacity 02 04 and the Drive Duty Selection C6 01 dep on drive capacity Poor torque or speed response Motor hunting and oscillation Torque Compensation Primary Delay Time C4 02 If motor torque and speed response are too slow decrease the setting f motor hunting and oscillation occur increase the setting 200 ms I 100 to 1000 ms Poor motor torque at speeds below 10 Hz Motor hunting and oscillation Torque Compensation Gain C4 01 f motor torque is insufficient at speeds below 10 Hz increase the setting f motor hunting and oscillation with a relatively light load decrease the setting 0 50 to 1 50 Poor motor torque at low speeds Motor instability at motor start Mid Output Voltage A E1 08 Minimum Output Voltage E1 10 f torque is insufficient at speeds below 10 Hz increase the setting f motor instability occurs at motor start decrease the setting Note The recommended setting value is for 200 V class drives Double this value when using a 400 V class drive Initial value 5 Poor speed precision Slip Compensation Gain C3 01 After setting the motor rated current E2 01 motor rated slip E2 02 and motor no load current E2 03 adjust the s
58. ible Solutions LED Operator Display Error Name Drive Capacity Setting Fault oPEO1 Drive capacity and then value set to 02 04 do not match Cause Possible Solutions The drive capacity setting 02 04 and the actual capacity of the drive are not the Correct the value set to 02 04 same LED Operator Display Error Name Parameter Range Setting Error oPE02 Use UI 18 to find which parameters were set outside the setting range Cause Possible Solutions Parameters were set outside the possible setting range Set parameters to the proper values Note Other errors are given precedence over oPE02 when multiple errors occur at the same time LED Operator Display Error Name Multi Function Input Selection Error oPE03 A contradictory setting is assigned to multi function contact inputs H1 01 through to H1 06 Cause Possible Solutions Ensure all multi function inputs are assigned to different functions Re enter the multi function settings to ensure this does not occur The same function is assigned to two multi function inputs Excludes Not used and External Fault The Up command was set but the Down command was not or vice versa settings 10 vs 11 Correctly set functions that need to be enabled in The Up 2 command was set but the Down 2 command combination with other functions was not or vice versa settings 75 vs 76 OYMC TOE
59. ier frequency derating increases the chances of an overload fault 012 Switch to a larger capacity motor if oL2 faults occur too frequently 5D Troubleshooting Unstable Motor Speed when Using PM or IPM Cause Possible Solutions The motor code for PM E5 01 is set incorrectly Yaskawa motors only Set parameter 5 01 in accordance with the motor being used The drive is operating at less than 10 of the speed reference Consult with OYMC about using a different type of motor when attempting to operate at 10 of the speed reference Motor hunting occurs Set and carefully adjust the following parameters in the order listed n8 45 Speed Feedback Detection Suppression Gain n8 55 Load Inertia for PM Motors C4 02 Torque Compensation Primary Delay Time Hunting occurs at start Increase the S curve time at the start of acceleration C2 01 Too much current is flowing through the drive If using a PM motor set the correct motor code to E5 01 If using a specialized motor set parameter E5 xx to the correct value according to the Motor Test Report m Motor Does Not Operate When the RUN Button on the Digital Operator is OYMC TOEP C71060622 01 OY V1000 User Manual 235 5 9 Troubleshooting without Fault Display Pressed Cause Possible Solutions The LOCAL REMOTE mode is not selected properly Press the LOCAL REMOTE button to switch The LO RE LED should be on for LOCAL m
60. in relation to the load characteristics The maximum output frequency and the base frequency reference are not set properly in relationship to each other Set the proper values for the maximum output frequency and base frequency E1 04 E1 06 Hunting Prevention is disabled V f control only OYMC TOEP C71060622 01 OY V1000 User Manual Enable Hunting Prevention by setting n1 01 1 OLV only Increase the speed feedback detection control gain and time constant n2 01 n2 02 231 5 9 Troubleshooting without Fault Display Load Falls When Brake is Applied Hoist Type Applications Possible Solutions Use frequency reference detection for closing and releasing the brake At start Release the brake after creating enough torque At stop Close the brake when the motor still produces torque Make the following setting changes to hold the brake Set the frequency detection inactive during baseblock L4 07 0 Multi function contact output terminal will switch on when the output frequency is greater than the frequency detection level set in L4 01 Set L4 01 between 1 0 and 3 0 Hz Slipping may occur when stopping because hysteresis is used in Frequency Reference 2 where the frequency agree setting in L4 02 is 2 0 Hz To prevent this change the setting to 0 1 Hz Do not use the multi function contact output setting During Run H2 01 0 for the brake signal Insufficient
61. ive input power lines Install a noise filter to the input side of the drive input power LED Operator Display Minor Fault Name CAL CALL Serial Communication Transmission Error Communication has not yet been established Cause Possible Solutions Minor Fault H2 OO 10 Communications wiring is faulty there is a short circuit or something is not connected properly Check for wiring errors Correct the wiring Remove and ground shorts and reconnect loose wires YES Programming error on the master side Check communications at start up and correct programming errors Communications circuitry is damaged Perform a self diagnostics check Replace the drive if the fault continues to occurs Terminal resistance setting is incorrect The terminal slave drive must have the internal terminal resistance switch set correctly Place DIP switch S2 to the ON position Refer to MEMOBUS Modbus Switch Settings on page 391 LED Operator Display Minor Fault Name CE MEMOBUS Modbus Communication Error Control data was not received correctly for two seconds Possible Solutions Minor Fault H2 OO 10 A data error occurred due to noise Check options available to minimize the effects of noise Counteract noise in the control circuit wiring main circuit lines and ground wiring Reduce noise on the controller side Use su
62. led Cause Possible Solution There is phase loss in the drive input Check for wiring errors in the main circuit drive input power power Correct the wiring OYMC TOEP C71060622 01 OY V1000 User Manual 197 5D Troubleshooting 5 4 Fault Detection There is loose wiring in the drive input power terminals Ensure the terminals are tightened properly Apply the tightening torque specified in this manual to fasten the terminals Refer to Wire Gauges and Tightening Torque on page 59 There is excessive fluctuation in the drive input power voltage Check the voltage from the drive input power Review the possible solutions for stabilizing the drive input power Disable Input Phase Loss Detection L8 05 0 PF is detected if DC bus ripple is too high If it is disabled there is no fault but the ripple is still too high thereby the capacitors are stressed more and lose lifetime There is poor balance between voltage phases Stabilize drive input power or disable phase loss detection The main circuit capacitors are worn Check the maintenance time for the capacitors U4 05 Replace the drive if U4 05 is greater than 90 Check for anything wrong with the drive input power If nothing is wrong with the drive input power try the following solutions if the alarm continues Disable Input Phase Loss Protection selection L8 05 0 PF is detected if DC bus rippl
63. lines f a magnetic contactor is used between motors ensure it is on Replace the drive Attempted Auto Tuning without motor connected to the drive Connect the motor and perform Auto Tuning Current detection signal error Replace the drive LED Operator Display Error Name E u eno Endl Excessive V f Setting Detected only during Rotational Auto Tuning and displayed after Auto Tuning is complete Cause Possible Solutions The torque reference exceeded 20 during Auto Tuning The results from Auto Tuning the no load current exceeded 80 Before Auto Tuning the drive verify the information written on the motor nameplate and enter that data to T1 03 through T1 05 Enter proper information to parameters T1 03 to T1 05 and repeat Auto Tuning If possible disconnect the motor from the load and perform Auto Tuning LED Operator Display Error Name End2 Cod CAGE Motor Iron Core Saturation Coefficient Detected only during Rotational Auto Tuning and displayed after Auto Tuning is complete Cause Possible Solutions Motor data entered during Auto Tuning was incorrect Motor data entered to the T1 parameters does not match the information written on the motor nameplate Restart Auto Tuning and enter the correct information Auto Tuning calculated values outside the parameter setting range assigning the iron core saturation coefficient
64. lip compensation gain C3 01 OYMC TOEP C71060622 01 OY V1000 User Manual 0 5 to 1 5 173 D Troubleshooting 5 2 Motor Performance Fine Tuning lt 1 gt Default settings change when the Control Method is changed A1 02 or a different V f pattern is selected using parameter E1 03 The default setting shown is for V f Control Note no load current E2 03 Next adjust the slip compensation gain set to C3 01 so that it is between 0 5 to 1 5 Use slip compensation to improve speed precision in V f Control First make sure that the proper values have been set for the motor rated current to E2 01 motor rated slip E2 02 and motor Open Loop Vector OLV Motor Control Method Tuning Table 5 2 Parameters for Tuning the Drive in OLV Motor Control Method Problem Parameter No Countermeasure Default Value Suggeste d Setting Poor motor torque and speed response Control motor hunting and oscillation at speeds between 10 and 40 Hz AFR Gain n2 01 f motor torque and speed response are too slow gradually decrease the setting by 0 05 f motor hunting and oscillation occur gradually increase the setting by 0 05 0 50 to 2 00 Poor motor torque and speed response Control motor hunting and oscillation at speeds between 10 and 40 Hz AFR Time Constant 1 n2 02 To improve motor torque speed response gradually reduce this setting by 10 ms and check the perfor
65. lowable time L6 06 Cause Possible Solution Parameter settings are not appropriate for the type of load Check the settings of parameters L6 05 and L6 06 There is a fault on the machine side Check the load for any problems LED Operator Display Fault Name ULS Mechanical Weakening Detection 2 The operation conditions matched the conditions set to L6 08 Cause Possible Solution Undertorque was detected and matched the condition of mechanical loss detection operation selection L6 08 Check the load side for any problems LED Operator Display Fault Name DC Bus Undervoltage One of the following conditions occurred while the drive was stopped Voltage in the DC bus fell below the undervoltage detection level L2 05 For 200 V class approximately 190 V 160 V for single phase drives For 400 V class approximately 380 V 350 V when E1 01 is less then 400 The fault is output only if L2 01 0 or L2 01 1 and the DC bus voltage is under 11 05 for longer than L2 02 Cause Possible Solution Input power phase loss The main circuit drive input power is wired incorrectly Correct the wiring One of the drive input power wiring terminals is loose Ensure there are no loose terminals Apply the tightening torque specified in this manual to fasten the terminals Refer to Wire Size on page 68 There is a problem with the volta
66. mance If motor hunting and oscillation occur as a result of load inertia gradually increase the setting by 50 ms and check the performance Note Ensure that n2 02 lt n2 03 When making adjustments to n2 02 set C4 02 Torque Compensation Primary Delay Time Constant 1 accordingly 50 to 2000 ms Overvoltage trips when accelerating decelerating or during sudden speed or load changes 174 AFR Time Constant 2 n2 03 If overvoltage trips occur gradually increase this setting by 50 ms If response is slow gradually reduce this setting by 10 ms Note Ensure that n2 02 lt n2 03 When making adjustments to n2 03 increase the value of C4 06 Torque Compensation Primary Delay Time 2 proportionally 750 to 2000 ms Torque Compensation Primary Delay Time Constant 2 C4 06 If overvoltage trips occur gradually increase this setting by 10 ms and check the performance f response is slow gradually reduce this setting by 2 ms and check the performance Note Ensure that C4 02 lt C4 06 When changing C4 06 Torque Compensation Primary Delay Time Constant 2 increase the value of n2 03 proportionally 150 to 750 ms OYMC TOEP C71060622 01 OY V1000 User Manual 5 2 Motor Performance Fine Tuning Problem Parameter No Countermeasure Default Value Suggeste d Setting Torque Compensation Primary Delay Time Constant 1 C4 02 Poor motor torque and spee
67. n is enabled L3 11 1 High slip braking is enabled H1 LILI 68 An S curve is applied to the deceleration ramp C2 03 and C2 04 are not 0 PID output or frequency reference to bi directional output frequency reference is enabled d4 11 1 and the drive is not initialized to European settings OYMC TOEP C71060622 01 OY V1000 User Manual Check the initialization mode in parameter 02 09 Correct the parameter settings 217 D Troubleshooting 5 7 Auto Tuning Fault Detection 5 7 Auto Tuning Fault Detection Auto Tuning faults are shown below When the following faults are detected the fault is displayed on the Digital Operator and the motor coasts to a stop No fault or alarm outputs will occur Auto Tuning Codes Causes and Possible Solutions Table 5 11 Auto Tuning Codes Causes and Possible Solutions LED Operator Display Error Name Er 01 Motor Data Error Possible Solutions Motor data or data entered during Auto Tuning incorrect Check that the motor data entered to the T1 parameters match the information written on the motor nameplate input before Auto Tuning Start Auto Tuning over again and enter the correct information Motor output and motor rated current settings T1 02 and T1 04 do not match Check the drive and motor capacities Correct the settings of parameters T1 02 and T1 04 Motor output and no load current settings T1 04 and E
68. ng simultaneous contradictory settings H6 01 or H3 10 C PID Target Value and b5 18 1 enables b5 19 as the target PID value Disable one of the PID selections LED Operator Display Error Name OYMC TOEP C71060622 01 OY V1000 User Manual Parameter Selection Error A function has been set that cannot be used in the motor control method selected 215 5D Troubleshooting 5 6 Operator Programming Errors Cause Possible Solutions Attempted to use a function in the V f motor control method that is only possible in Open Loop Vector Control Check the motor control method and the functions available Simple V f with PG was enabled while not in V f Control H6 01 3 To use Simple V f with PG ensure the motor control method has been set to V f Control A1 02 0 In Open Loop Vector Control n2 02 is greater than n2 03 Correct parameter settings so that n2 02 is less than n2 03 In Open Loop Vector Control C4 02 is greater than C4 06 Correct parameter settings so that C4 02 is less than C4 06 In PM Open Loop Vector Control parameters E5 02 to E5 07 are set to 0 Set the correct motor code in accordance with the motor being used E5 01 When using a special purpose motor set 5 00 in accordance with the Test Report provided The following conditions are true in PM Open Loop Vector Control E5 03 does not equal 0 E5 09 and E5 24 are both equal to 0
69. nnels is faulty Replace the drive LED Operator Display Minor Fault Name 1 H i Current Alarm Drive current exceeded overcurrent warning level 150 of the rated current Cause Possible Solutions Minor Fault Output 2 00 10 Load is too heavy Measure the current flowing through the motor Reduce the load or increase the capacity of the drive YES Acceleration and deceleration times are too short Calculate the torque required during acceleration and for the inertia moment If the torque level is not right for the load take the following steps ncrease the acceleration and deceleration times C1 01 through C1 08 Increase the capacity of the drive OYMC TOEP C71060622 01 OY V1000 User Manual 207 5 5 Alarm Detection A special purpose motor is being used or the drive is attempting to run a motor greater than the maximum allowable capacity Check the motor capacity Use a motor appropriate for the drive Ensure the motor is within the allowable capacity range The current level increased due to Speed Search after a momentary power loss or while attempting to perform a fault restart The alarm will appear only briefly There is no need to take action to prevent the alarm from occurring in such instances LED Operator Display Minor Fault Name oH oH Heatsink Overheat The temperature exceeded th
70. nsible for modification of the product made by the user Check all the wiring after installing the drive and connecting other devices to ensure that all connections are correct Failure to comply could result in damage to the drive 172 OYMC TOEP C71060622 01 OY V1000 User Manual 5 2 Motor Performance Fine Tuning 5 2 This section offers helpful information for counteracting oscillation hunting or other faults Motor Performance Fine Tuning that occur while performing a trial run Refer to the section below that corresponds to the motor control method used Note This section describes parameters that are commonly edited Consult OYMC or an OYMC sales representative for more information on detailed settings and fine tuning the drive Vif Motor Control Method Tuning Table 5 1 Parameters for Tuning the Drive in V f Motor Control Method Problem Parameter No Countermeasure Default Value Suggested Setting Motor hunting and oscillation at speeds between 10 and 40 Hz Hunting Prevention Gain n1 02 If insufficient motor torque relative to the size of the load causes hunting reduce the setting When motor hunting and oscillation occur with a light load increase the setting 0 50 to 2 00 Motor noise Motor hunting and oscillation at speeds up to 40 Hz Carrier Frequency Selection C6 02 If the motor noise is too loud increase the carrier frequency When motor
71. oad is too heavy Measure the output current Decrease the load Lower the carrier frequency C6 02 Internal cooling fan is stopped Replace the cooling fan Refer to Cooling Fan Replacement on page 250 After replacing the drive reset the cooling fan maintenance parameter 04 03 0 LED Operator Display Fault Name Jot nH oni oH1 Overheat 1 Heatsink Overheat The temperature of the heatsink has exceeded the value set to L8 02 100 110 C Default value for L8 02 is determined by drive capacity 02 04 Cause Possible Solution Surrounding temperature is too hot Check the temperature surrounding the drive Improve the air circulation within the enclosure panel Install a fan or air conditioner to cool the surrounding area Remove anything near the drive that might be producing excessive heat Load is too heavy 192 Measure the output current Reduce the load Lower the carrier frequency C6 02 OYMC TOEP C71060622 01 OY V1000 User Manual The internal cooling fan has reached its performance life or has malfunctioned 5 4 Fault Detection Check the maintenance time for the cooling fan U4 04 If U4 04 exceeds 90 replace the cooling fan Refer to Cooling Fan Replacement on page 250 After replacing fan reset the fan maintenance time 04 03 0 Current flowing to control circuit terminal V exceeded the toleran
72. ode The drive is not in drive mode Arun command will not be issued Exit to the drive mode and cycle the run command The frequency reference is too low If the frequency reference is set below the frequency set in E1 09 Minimum Output Frequency the drive will not operate Raise the frequency reference to at least the minimum output frequency Motor Does Not Operate When an External Run Command is Input Cause Possible Solutions The LOCAL REMOTE mode is not selected properly Press the LOCAL REMOTE button to switch The LO RE LED should be off for REMOTE mode The drive is not in Drive Mode A run command will not be issued Exit to the Drive mode and cycle the run command The frequency reference is too low If the frequency reference is set below the frequency set in E1 09 Minimum Output Frequency the drive will not operate Raise the frequency reference to at least the minimum output frequency Motor Stops During Acceleration or When a Load is Connected Cause Possible Solution The load is too heavy The limit of motor response may be reached during rapid acceleration This may be a result of improper stall prevention or automatic torque boost Increase the acceleration time C1 01 or reduce the motor load Also consider increasing the motor size and or drive size function adjustment L3 01 2 Motor Rotates in One Direction Only Caus
73. onant frequency of the connected machinery Adjust the carrier frequency using parameters C6 02 through C6 05 The drive output frequency is the same Adjust the parameters used for the Jump Frequency function d3 01 as the resonant frequency of the through d3 04 to skip the problem causing bandwidth connected machinery Place the motor on a rubber pad to reduce vibration Note The drive may have trouble assessing the status of the load due to white noise generated when using Swing PWM C6 02 7 to A or 7 if set for Normal Duty Oscillation or Hunting Possible Solutions Adjust the following parameters in the order listed An increase in gain should be followed with an increase in the primary delay time constant fe _ C4 02 Torque Compensation Primary Delay Time tining ini Open Loop Vector n2 01 Speed Feedback Detection Control AFR Time Constant 1 C3 02 Slip Compensation Primary Delay Time The response for torque compensation and slip compensation will drop as the time constant is increased Perform Auto Tuning Set motor parameters after calculating the proper values Change the motor control method to V f Control A1 02 0 Auto Tuning has not yet been performed required for Open Loop Vector Control Adjust the following parameters in the order listed n1 02 Hunting Prevention Gain Setting Insufficient tuning in V f Control n1 03 Hunting Prevention
74. ons Output 2 00 10 MEMOBUS Modbus test has This verifies that the test was successful No output finished normally 210 OYMC TOEP C71060622 01 OY V1000 User Manual LED Operator Display 5 5 Alarm Detection Minor Fault Name DT z PGo LIU PG Disconnect for Simple V f with PG Detected when no PG pulses received for a time longer than setting in F1 14 Cause Possible Solutions Minor Fault Output 2 00 10 Pulse input RP is disconnected Reconnect the pulse input RP YES Pulse input RP wiring is wrong Correct the wiring YES Motor brake is engaged Ensure the brake releases properly YES LED Operator Display Minor Fault Name rUn Motor Switch during Run A command to switch motors was entered during run Possible Solutions Minor Fault Output 2 00 10 A motor switch command was entered during run Change the operation pattern so that the motor switch command is entered while the drive is stopped YES LED Operator Display Minor Fault Name UL 3 UL3 Undertorque Detection 1 Drive output current or torque in OLV less than L6 02 for longer than L6 03 time Cause Possible Solutions Minor Fault H2 OO 10 Inappropriate parameter settings Check parameters L6 02 and L6 03 YES Load has dropped or decreased significantly Check for broken pa
75. oting 5 9 Troubleshooting without Fault Display Cause Possible Solutions The Stall Prevention level during run has been set too low Check the Stall Prevention level during run L3 06 If L3 06 is set too low speed will drop as the drive outputs torque ncrease the setting value Although the drive is operating in Open Loop Vector motor control method Auto Tuning has not been performed Perform Auto Tuning Calculate motor data and reset motor parameters Switch to the V f motor control method A1 02 0 Drive reached the limitations of the V f motor control method The motor cable may be long enough over 50 m to require Auto Tuning for line to line resistance Also be aware that V f Control is comparatively limited when it comes to producing torque at low speeds Consider switching to Open Loop Vector Control W Drive Frequency Reference Differs from the Controller Frequency Reference Command Cause Possible Solutions The analog input frequency gain and bias are set to incorrect values Check the frequency reference terminal input gain level assigned to terminals Al and A2 as well as the frequency reference input bias to terminal Al and A2 parameters H3 03 H3 04 and H3 12 Set these parameters to the appropriate values A frequency bias signal is being entered via analog input terminals Al or A2 f multi function analog input terminals A1 and A2
76. overexcitation n3 23 0 Speed Search related parameters are not set to the proper values Check values set to Speed Search related parameters Adjust the Speed Search current and Speed Search deceleration times b3 02 and b3 03 respectively After Auto Tuning enable Speed Estimation Type Search b3 24 1 Output current fluctuation due to input phase loss Check the power supply for phase loss LED Operator Display Fault Name oL2 iy OLE Drive Overload The thermal sensor of the drive triggered overload protection Cause Possible Solution Load is too heavy 194 Reduce the load OYMC TOEP 71060622 01 V1000 User Manual 5 4 Fault Detection Cycle times are too short during Increase the settings for the acceleration and deceleration times C1 01 acceleration and deceleration through C1 08 Adjust the preset V f pattern E1 04 through E1 10 This will mainly involve Voltage is too high for the V f reducing E1 08 and E1 10 characteristics Be careful not to lower E1 08 and E1 10 excessively because this reduces load tolerance at low speeds Drive capacity is too small Replace the drive with a larger model Reduce the load when operating at low speeds Replace the drive with a model that is one frame size larger Lower the carrier frequency C6 02 Overload occurred when operating at low speeds Reduce the torque
77. p for a 3 wire sequence then HI must be set to 0 Refer to Table 5 2 for additional information m Motor Rotates in the Opposite Direction from the Run Command Possible Solutions Check the motor wiring Phase wiring between the drive and motor Switch two motor cables U V and W to reverse motor direction is incorrect 226 Connect drive output terminals U T1 V T2 and W T3 in the right order to the corresponding motor terminals U V and W OYMC TOEP C71060622 01 OY V1000 User Manual 5 9 Troubleshooting without Fault Displa Possible Solutions The forward direction for the motor is set up incorrectly Typically forward is designated as being counterclockwise when looking from the motor shaft refer to the figure below 1 P poc Forward Rotating Motor looking down the motor shaft 2 Motor Shaft The motor is running at almost 0 Hz and the Speed Search estimated the speed to be in the opposite direction Disable bi directional search b3 14 0 so that Speed Search is performed only in the specified direction Note Check the motor specifications for the forward and reverse directions The motor specifications will vary depending on the manufacturer of the motor Motor Rotates in One Direction Only Cause Possible Solutions The drive prohibits reverse rotation Check parameter b1 04 Set the drive to allow the motor to ro
78. rator Display Fault Name dWFL FBD s Fault uot iL dWAL FBD s fault Cause Possible Solution Fault output by a FBD s program Correct whatever caused the fault to occur LED Operator Display Fault Name EFO Option Card External Fault An external fault condition is present Possible Solution An external fault was received from the PLC with F6 03 3 alarm only the drive continued to run Remove the cause of the external fault Remove the external fault input from the PLC OYMC TOEP C71060622 01 OY V1000 User Manual 187 5 4 Fault Detection Problem with the PLC program Check the PLC program and correct problems LED Operator Display Fault Name EF1 External Fault input terminal S1 External fault at multi function input terminal S1 EF2 External Fault input terminal S2 External fault at multi function input terminal S2 EF3 External Fault input terminal S3 External fault at multi function input terminal S3 EF4 External Fault input terminal S4 External fault at multi function input terminal S4 EF5 External Fault input terminal S5 External fault at multi function input terminal S5 EF6 External Fault input terminal S6 External fault at multi function input terminal S6 Cause Possible Solution An external device has
79. rent value exceeds the rated current of the drive Determine if there is sudden fluctuation in the current level Reduce the load to avoid sudden changes in the current level or switch to a larger drive OYMC TOEP C71060622 01 OY V1000 User Manual The acceleration or deceleration times are too short 5 4 Fault Detection Calculate the torque needed during acceleration relative to the load inertia and the specified acceleration time If the right amount of torque cannot be set make the following changes ncrease the acceleration time C1 01 03 05 07 ncrease the S curve characteristics C2 01 through C2 04 ncrease the capacity of the drive The drive is attempting to operate a specialized motor or a motor larger than the maximum size allowed Check the motor capacity Ensure that the rated capacity of the drive capacity rating found on the motor namep is greater than or equal to the ate Magnetic contactor MC on the output side of the drive has turned on or off Se up the operation sequence so that the is not tripped while the drive is putting current V f setting is not operating as expected Check the ratios between the voltage and frequency Set parameter E1 04 through E1 10 appropriately Set E3 04 through E3 10 when using a second motor Lower the voltage if it is too high relative to the frequency Excessive torque compensation Ch
80. rge absorbers on magnetic contactors or other equipment causing the disturbance Use cables recommended by OYMC or another type of shielded line The shield should be grounded on the controller side or on the drive input power side Separate all wiring for communications devices from drive input power lines Install a noise filter to the input side of the drive input power OYMC TOEP C71060622 01 OY V1000 User Manual 203 5D Troubleshooting 5 5 Alarm Detection Communication protocol is incompatible Check the H5 parameter settings as well as the protocol setting in the controller Ensure settings are compatible The CE detection time H5 09 is set shorter than the time required for a communication cycle to take place Check the PLC Change the software settings in the PLC Set a longer CE detection time H5 09 Incompatible PLC software settings or there is a hardware problem Check the PLC Remove the cause of the error on the controller side Communications cable is disconnected or damaged Check the connector for a signal through the cable Replace the communications cable LED Operator Display Minor Fault Name CrST Can Not Reset Fault reset was being executed when a run command was entered se Possible Solutions Minor Fault H2 OO 10 Fault reset was being executed when a run command was entered Ensure that a run comm
81. rges can reach up to three times the drive input power supply Insufficient voltage insulation between voltage 600 V for 200 V class and 1200 V for 400 V class motor phases Use a motor with voltage tolerance higher than the max voltage surge Use a motor designed to work specifically with a drive when using a 400 V class unit Install an AC reactor on the output side of the drive The motor fan has stopped or is clogged Check the motor fan m Drive Does Not Allow Selection of Rotational Auto Tuning Cause Possible Solutions Check if the drive is set to V f Control by accident A1 02 0 Change the motor control method to Open Loop Vector Control A1 02 2 The drive is in the incorrect motor control method for Rotational Auto Tuning Motor Hunting Occurs at Low Speeds Possible Solutions Excess load inertia can cause motor hunting in Open Loop Vector Control due to slow motor response Excessive load inertia in Open Loop Increase the speed feedback detection control time constant n2 02 Vector Control from its default value of 50 ms to an appropriate level between 200 and 1000 ms Adjust this setting in combination with n2 03 Feedback Detection Control Time Constant 2 WB Overvoltage Occurs When Running at a Constant Speed Cause Possible Solutions Loads with a lot of inertia fans etc can trigger an overvoltage fault when operating in Open Loop Vector Control
82. ror Displays LED Operator Display Name 14 LED Operator Display Application setup error Name Er 01 Motor Data Error _ _ Er 09 i uo Acceleration Error Er 02 Alarm Er 11 Motor Speed Error Er 03 STOP button Input Er 12 Current Detection Error Er 04 Line to Line Resistance Error Endl Excessive V f Setting Er 05 No Load Current Error End2 Motor Iron Core Saturation Coefficient Error 182 Er 08 Rated Slip Error End3 OYMC TOEP C71060622 01 OY V1000 User Manual Rated Current Setting Alarm 5 4 Fault Detection 5 4 Fault Detection Fault Displays Causes and Possible Solutions Table 5 8 Detailed Fault Displays Causes and Possible Solutions LED Operator Display Fault Name Option Communication Error bUS After establishing initial communication the connection was lost Only detected when the run command frequency reference is assigned to an option card Possible Solution No signal received from the PLC Check for faulty wiring The communication cable is faulty Correct the wiring or a short circuit exists Check for loose wiring and short circuits Repair as needed Check the various options available to minimize the effects of noise Counteract noise in control circuit main circuit and ground wiring Ensure that other equipment
83. rts in the transmission system YES LED Operator Display Minor Fault Name UL4 Undertorque Detection 2 Drive output current or torque in OLV less than L6 05 for longer than L6 06 time Cause Possible Solutions Minor Fault OO 10 2 Inappropriate parameter settings Check parameters L6 05 and L6 06 YES The load has dropped or decreased significantly Check for broken parts in the transmission system OYMC TOEP C71060622 01 OY V1000 User Manual YES 211 Troubleshooting 5 5 Alarm Detection LED Operator Display Minor Fault Name Undervoltage One of the following conditions was true when the drive was stopped and a run command was entered DC bus voltage dropped below the level specified in L2 05 Contactor to suppress inrush current in the drive was open Low voltage in the control drive input power This alarm output not 0 and DC bus voltage is under L2 05 s only if L2 01 is Cause Possible Solutions Minor Fault H2 OO 10 Phase loss in the drive input power Check for wiring errors in the main circuit drive input power Correct the wiring YES Loose wiring in the drive input power terminals Ensure the terminals have been properly tightened Apply the tightening torque specified in this manual to fasten the terminals Refer to Wire Gauges and Tightening Torque on page 59 There is a
84. s coasting to stop Enable Speed Search at start b3 01 1 Perform Speed Search or 2 H1 xx 61 or 62 via one of the external terminals Note Speed Search 1 and 2 are the same when using PM OLV The drive started to run during Current Offset Fault or while coasting to a stop Hardware problem Replace the drive LED Operator Display Fault Name Output Phase Loss LF Phase loss on the output side of the drive Phase Loss Detection is enabled when L8 07 is set to 1 or 2 Cause Possible Solution Check for wiring errors and ensure the output cable is connected properly The output cable is disconnected Correct the wiring OYMC TOEP C71060622 01 OY V1000 User Manual 189 5 4 Fault Detection The motor winding is damaged Check the resistance between motor lines Replace the motor if the winding is damaged The output terminal is loose Apply the tightening torque specified in this manual to fasten the terminals Refer to Wire Size on page 68 The motor being used is less than 5 of the drive rated current Check the drive and motor capacities An output transistor is damaged Replace the drive A single phase motor is being used The drive being used cannot operate a single phase motor LED Operator Display Fault Name LF2 Output current imbalance One or more of the phases in the output current is lost Ca
85. se Do not touch terminals before the capacitors have fully discharged Failure to comply could result in death or serious injury Before wiring terminals disconnect all power to the equipment The internal capacitor remains charged even after the drive input power is turned off The charge indicator LED will extinguish when the DC bus voltage is below 50 Vdc To prevent electric shock wait at least five minutes after all indicators are off and measure the DC bus voltage level to confirm safe level 170 OYMC TOEP C71060622 01 OY V1000 User Manual 5 1 Section Safety Do not allow unqualified personnel to perform work on the drive Failure to comply could result in death or serious injury Installation maintenance inspection and servicing must be performed only by authorized personnel familiar with installation adjustment and maintenance of AC drives Do not perform work on the drive while wearing loose clothing jewelry or without eye protection Failure to comply could result in death or serious injury Remove all metal objects such as watches and rings secure loose clothing and wear eye protection before beginning work on the drive Do not remove covers or touch circuit boards while the power is on Failure to comply could result in death or serious injury Troubleshooting Fire Hazard Tighten all terminal screws to the specified tightening torque Loose electrical connections could result in death or serious injur
86. sponse Motor instability at motor start f motor torque and speed response are too slow increase the setting f the motor exhibits excessive instability at start up reduce the setting Note The default value is for 200 V class units Double this value when using a 400 V class drive When working with a relatively light load increasing this value Initial 2 V too much can create an excessively high of a torque reference lt 1 gt Default settings change when the Control Method is changed A1 02 or a different V f pattern is selected using parameter E1 03 The default setting shown is for V f Control When using OLV Motor Control leave the torque compensation gain C4 01 at its default setting of 1 00 To increase speed precision during regeneration in OLV Motor Control enable slip compensation during regeneration C3 04 1 Motor Hunting and Oscillation Control Parameters In addition to the parameters discussed in V f Pattern Selection E1 03 on page 134 the following parameters indirectly affect motor hunting and oscillation OYMC TOEP C71060622 01 OY V1000 User Manual 175 5 2 Motor Performance Fine Tuning Table 5 3 Parameters that Affect Control Performance in Applications Name Parameter No Application Dwell Function b6 01 through b6 04 Prevents motor speed loss by maintaining the output frequency when working with heavy loads or when there is powerful backlas
87. strict parameter editing H1 01 through H1 06 1B When the terminal is open parameters cannot be edited Turn on the multi function contact input set to 1B The wrong password was entered If the password entered to A1 04 does not match the password saved to A1 05 then drive settings cannot be changed Reset the password f you cannot remember the password Display parameter A1 04 Press the button while pressing at the same time Parameter A1 05 will appear Set a new password to parameter A 1 05 Undervoltage was detected Check the drive input power voltage by looking at the DC bus voltage U1 07 Check all main circuit wiring Motor Does Not Rotate Properly after Pressing RUN Button or After Entering External Run Command Motor Does Not Rotate Cause Possible Solutions The drive is not in the Drive Mode Check if the DRV light on the LED operator is lit Enter the Drive Mode to begin operating the motor Refer to The Drive 224 and Programming Mode on page 93 OYMC TOEP C71060622 01 OY V1000 User Manual 5 9 Troubleshooting without Fault Display Possible Solutions The LO RE button was pushed Stop the drive and check if the correct frequency reference source is selected If the operator keypad shall be the source the LO RE button LED must be on if the source is REMOTE it must be off Take the following steps to solve the problem
88. t of transistor switching noise Install an Input Noise Filter at the input power terminals Install an Output Noise Filter at the motor terminals Use conduit Metal can shield electrical noise Ground the drive and motor Separate main circuit wiring from control wiring Radio frequency interference may be generated by drive output PWM waveform Ground Fault Interrupter Activates When Drive is Running Cause Possible Solutions Change to a ground fault interrupter with a higher leakage current detection level such as a sensitivity current of 200 mA or greater per Unit with an operating time of 0 1 s or more or one that incorporates high frequency countermeasures Change the Carrier Frequency Selection C6 02 to lower the carrier frequency Note Leakage current increases in proportion to cable length The output of the drive is a series of high frequency pulses PWM so there is a certain amount of leakage current This may cause the ground fault interrupter to operate and cut off the drive input power OYMC TOEP C71060622 01 OY V1000 User Manual 237 5D Troubleshooting
89. tate in reverse b1 04 0 A Reverse run signal has not been entered although 3 wire sequence is selected Motor is Too Hot Make sure that one of the input terminals S3 to S6 used for the 3 wire sequence has been set for reverse Possible Solutions The load is too heavy If the load is too heavy for the motor the motor will overheat as it exceeds its rated torque value for an extended period of time Keep in mind that the motor also has a short term overload rating in addition to the possible solutions provided below Reduce the load Increase the acceleration and deceleration times Check the values set for the motor protection L1 01 L1 02 as well as the motor rated current E2 01 Increase motor capacity The air around the motor is too hot Check the ambient temperature Cool the area until it is within the specified temperature range The drive is operating in a vector control mode but Auto Tuning has not yet been performed Perform Auto Tuning Calculate the motor value and reset the motor parameters Change the motor control method to V f Control A1 02 0 OYMC TOEP C71060622 01 OY V1000 User Manual 227 5D Troubleshooting 5 9 Troubleshooting without Fault Display Possible Solutions When the motor is connected to terminals U T1 V T2 and W T3 voltage surges occur between the motor coils and drive switching Normally su
90. tered to the T1 parameters does not match the information written on the motor nameplate Enter the correct data Start Auto Tuning over again and enter the correct information Auto Tuning did not complete within designated time frame Drive calculated values outside parameter setting range Check and correct faulty motor wiring Disconnect the motor from machine and perform Rotational Auto Tuning LED Operator Display Error Name EE 15 Er 05 No Load Current Error Cause Possible Solutions Motor data entered during Auto Tuning was incorrect Motor data entered to the T1 parameters does not match the information written on the motor nameplate Enter the correct data Restart Auto Tuning and enter the correct information Auto Tuning did not complete within designated time frame Drive calculated values outside parameter setting range Check and correct faulty motor wiring Disconnect the motor from machine and perform Rotational Auto Tuning LED Operator Display Error Name E BOH Er 08 Rated Slip Error Cause Possible Solutions Motor data entered during Auto Tuning was incorrect Motor data entered to the T1 parameters does not match the information written on the motor nameplate Enter the correct data Restart Auto Tuning and enter the correct information Auto Tuning did not complete within designated time frame
91. the cause of the fault LED Operator Display Fault Name High Slip Braking OL The output frequency stayed constant for longer than the time set in n3 04 during High slip Braking OYMC TOEP C71060622 01 OY V1000 User Manual 195 5D Troubleshooting 5 4 Fault Detection Cause Possible Solution Excessive load inertia Motor is driven by the load Something on the load side is restricting deceleration Reduce deceleration times using parameters C1 02 04 06 and 08 in applications that do not use High slip Braking Use a braking resistor to shorten deceleration time The overload time during High slip Braking is too short Increase parameter n3 04 High slip Braking Overload Time Install a thermal relay and increase the parameter setting of n3 04 to the maximum value LED Operator Display Fault Name Digital Operator Connection Fault The LCD operator has been disconnected from the drive Note An oPr fault will occur when all of the following conditions are true Output is interrupted when the operator is disconnected 02 06 1 The run command is assigned to the LCD operator b1 02 0 and LOCAL has been selected Cause Possible Solution LCD operator is not properly connected to the drive Check the connection between the LCD operator and the drive Replace the cable if damaged Turn off the drive input power and disconnect the L
92. timing No output LED Operator Display Minor Fault Name bUS Option Communication Error After initial communication was established the connection was lost Assign a run command frequency reference to the option card Possible Solutions Minor Fault H2 OO 10 Connection is broken or master controller stopped communicating Check for faulty wiring Correct the wiring Repair ground wiring or disconnected cables YES Option card is damaged If there are no problems with the wiring and the fault continues to occur replace the option card YES The option card is not properly connected to the drive 202 The connector pins on the option card are not properly lined up with the connector pins on the drive Reinstall the option card OYMC TOEP C71060622 01 OY V1000 User Manual A data error occurred due to noise 5 5 Alarm Detection Check options available to minimize the effects of noise Take steps to counteract noise in the control circuit wiring main circuit lines and ground wiring Try to reduce noise on the controller side Use surge absorbers on magnetic contactors or other equipment causing the disturbance Use cables recommended by OYMC or another type of shielded line The shield should be grounded on the controller side or on the drive input power side All wiring for communications devices should be separated from dr
93. tion card 4 Pulse train input RP The terminal set to accept the main speed reference is set to the incorrect voltage and or current Check DIP switch S1 Next assign the correct input level to terminal A2 H3 09 Refer to Terminal A2 Switch on page 75 Selection for the sink source mode is incorrect Check DIP switch S3 Refer to Sinking Sourcing Mode Switch on page 73 Frequency reference is too low OYMC TOEP C71060622 01 OY V1000 User Manual Check the frequency reference monitor U1 01 Increase the frequency by changing the maximum output frequency E1 09 225 Troubleshooting 5 9 Troubleshooting without Fault Display Cause Possible Solutions Multi function analog input is set up to accept gain for the frequency reference but no voltage current has been provided Check the multi function analog input settings Check if analog input A1 or A2 is set for frequency reference gain H3 02 10 1 If so check if the correct signal is applied to the terminal The gain and the frequency reference will be 0 if no signal is applied to the gain input Check if H3 02 and H3 10 have been set to the proper values Check if the analog input value has been set properly The STOP button was pressed when the drive was started from a REMOTE source When the STOP button is pressed the drive will decelerate to stop Switch off the run command and then re enter a run comman
94. to be tripped by a minor fault 2 0 10 but not by an alarm The digital operator displays text indicating a specific alarm and ALM indicator LED flashes Remove the cause of an alarm or minor fault to automatically reset When parameter settings conflict with one another or do not match hardware settings such as with an option card it results in an operation error When the drive detects an operation error Operation Errors The digital operator displays text that indicates the specific error Multi function contact outputs do not operate When the drive detects an operation error it will not operate the motor until the error has been reset Correct the settings that caused the operation error to reset OYMC TOEP C71060622 01 OY V1000 User Manual 177 5 3 Drive Alarms Faults and Errors Type Drive Responses to Alarms Faults and Errors Tuning errors occur while performing Auto Tuning When the drive detects a tuning error The digital operator displays text indicating the specific error Multi function contact outputs do not operate Motor coasts to stop Remove the cause of the error and repeat the Auto Tuning process Tuning Errors Alarm and Error Displays Faults When the drive detects a fault the ALM indicator LEDs remain lit without flashing If the LEDs flash the drive has detected a minor fault or alarm Refer to Minor Faults and Alarms on page
95. tripped an alarm function Remove the cause of the external fault and reset the fault Wiring is incorrect Ensure the signal lines have been connected properly to the terminals assigned for external fault detection H1 LIL 20 to 2F Reconnect the signal line Incorrect setting of multi function contact inputs e Check if the unused terminals set for H1 Change the terminal settings 20 to 2F External Fault LED Operator Display Fault Name t rr Err EEPROM Write Error Data does not match the EEPROM being written to Possible Solution Press the button amp ENTER Correct the parameter settings Cycle power to the drive Refer to Diagnosing and Resetting Faults on page 222 LED Operator Display Fault Name 4H FbH Excessive PID Feedback PID feedback input is greater than the level set b5 36 for longer than the time set to b5 37 To enable fault detection set b5 12 2 or 5 Cause Possible Solution Parameters are not set appropriately Check the settings of parameters b5 36 and b5 37 Wiring for PID feedback is incorrect 188 Correct the wiring OYMC TOEP C71060622 01 OY V1000 User Manual 5 4 Fault Detection There is a problem with the Check the sensor on the control side feedback sensor Replace the sensor if damaged LED Operator Display Fault Name PID Feedba
96. tten e g using a communications option card Reinitialize the drive A1 03 LED Operator Display Fault Name CPF07 Terminal Board Communications Error A communication error occurred at the terminal board Possible Solution There is a fault connection between the terminal board and control board Turn the power off and reconnect the control circuit terminals LED Operator Display Fault Name LHEUB CPF08 EEPROM Serial Communication Fault EEPROM communications are not functioning properly Cause Possible Solution Terminal board or control board is not connected properly Turn the power off and check the control terminal connections LED Operator Display Fault Name rac CPF11 RAM Fault Cause Possible Solution Hardware is damaged Replace the drive LED Operator Display Fault Name roc L DE 12 CPF12 j Er e FLASH Memory Fault Problem with the ROM FLASH memory Cause Possible Solution Hardware is damaged Replace the drive LED Operator Display Fault Name CPF13 FO 13 CPE Watchdog Circuit Exception Self diagnostics problem Cause Possible Solution Hardware is damaged Replace the drive OYMC TOEP C71060622 01 OY V1000 User Manual 185 D Troubleshooting 5 4 Fault Detection LED Operator Display Fault Name
97. use Possible Solution Phase loss has occurred on the output side of the drive Check for faulty wiring or poor connections on the output side of the drive Correct the wiring Terminal wires on the output side of the drive are loose Apply the tightening torque specified in this manual to fasten the terminals Refer to Wire Size on page 68 No signal displays from the gate driver board Replace the drive Contact OYMC or an OYMC representative for assistance Motor impedance or motor phases are uneven Measure the line to line resistance for each motor phase Ensure all values are the same Replace the motor Contact OYMC or an OYMC representative for assistance LED Operator Display Fault Name a oC Overcurrent Drive sensors have detected an output current greater than the specified overcurrent level Cause Possible Solution The motor has been damaged due to overheating or the motor insulation is damaged Check the insulation resistance Replace the motor One of the motor cables has shorted out or there is a grounding problem Check the motor cables Remove the short circuit and power the drive back up Check the resistance between the motor cables and the ground terminal Replace damaged cables The load is too heavy 190 Measure the current flowing into the motor Replace the drive with a larger capacity unit if the cur
98. vice Select the optimal braking resistor Note The magnitude of the braking load trips the braking resistor overheat alarm NOT the surface temperature Using the braking resistor more frequently than its rating trips the alarm even when the braking resistor surface is not very hot 198 OYMC TOEP 71060622 01 V1000 User Manual 5 4 Fault Detection LED Operator Display Fault Name Dynamic Braking Transistor IT The built in dynamic braking transistor failed Cause Possible Solution The braking transistor is damaged Cycle power to the drive and check if the fault reoccurs Refer to Diagnosing and Resetting Faults page 222 The control circuit is damaged Replace the drive if the fault continues LED Operator Display Fault Name Too Many Speed Search Restarts SEr The number of speed search restarts exceeded the number set to b3 19 Cause Possible Solution Reduce the detection compensation gain during Speed Search b3 10 Speed Search parameters are setto Increase the current level when attempting Speed Search b3 17 the wrong values ncrease the detection time during Speed Search b3 18 Repeat Auto Tuning The motor is coasting in the opposite direction of the run command LED Operator Display Fault Name Pull Out Detection Enable Bi directional Speed Search b3 14 1 STO Motor pull out has occurred
99. xternal Speed Search command 234 H1 00 61 or 62 during restart Figure 4 17 on page 126 OYMC TOEP C71060622 01 OY V1000 User Manual 5 9 Troubleshooting without Fault Display WB Output Frequency is not as High as Frequency Reference Cause Possible Solutions Frequency reference is set within the range of the Jump Frequency Adjust the parameters used for the Jump Frequency function d3 01 through d3 03 Enabling the Jump Frequency prevents the drive from outputting the frequencies specified in the Jump Frequency range Upper limit for the frequency reference has been exceeded Set the maximum output frequency and the upper limit for the frequency reference to more appropriate values E1 04 d2 01 The following calculation yields the upper value for the output frequency 1 04 x d2 01 100 Large load triggered Stall Prevention function during acceleration Buzzing Sound from Motor at 2 kHz Reduce the load Adjust the Stall Prevention level during acceleration L3 02 Possible Solutions Exceeded 110 of the rated output current of the drive while operating at low speeds f the output current rises too high at low speeds the carrier frequency automatically reduces and causes a whining or buzzing sound f the sound is coming from the motor disable carrier frequency derating L8 38 0 Disabling the automatic carr
100. y by fire due to overheating of electrical connections Do not use an improper voltage source Failure to comply could result in death or serious injury by fire Verify that the rated voltage of the drive matches the voltage of the incoming drive input power before applying power Do not use improper combustible materials Failure to comply could result in death or serious injury by fire Attach the drive to metal or other noncombustible material OYMC TOEP C71060622 01 OY V1000 User Manual 171 5 1 Section Safety NOTICE Observe proper electrostatic discharge procedures ESD when handling the drive and circuit boards Failure to comply may result in ESD damage to the drive circuitry Never connect or disconnect the motor from the drive while the drive is outputting voltage Improper equipment sequencing could result in damage to the drive Do not use unshielded cable for control wiring Failure to comply may cause electrical interference resulting in poor system performance Use shielded twisted pair wires and ground the shield to the ground terminal of the drive Do not allow unqualified personnel to use the product Failure to comply could result in damage to the drive or braking circuit Carefully review instruction manual TOBPC72060000 when connecting a braking option to the drive Do not modify the drive circuitry Failure to comply could result in damage to the drive and will void warranty OYMC is not respo

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