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PROSTAR SOFTSTARTER - prostar international electric co.,ltd.

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Contents

1. Appendix 4 Modbus communication PRR Soft Starter User s Manual 1 Product Model and Consignee Check Please check the product carefully according to the following steps after unpacking please contact the supplier immediately if any problem is found E PRRI0I5 PRR1055 PRRI075 PRR1200 PRR Soft Starter User s Manual PRR1220 PRR1315 Standards for Product Design GB T 12668 2 2002 Standard of rated value for low voltage AC frequency conversion electric drive system e GB T 12668 3 2003 Standard and testing method of electromagnetism compatibility PRR Soft Starter User s Manual 1 1 Nameplate Check Model Illustration PRR 1 Adaptive motor power KW 1000 Series Bypass Model Prostar Softstarter 1 2 Product Check up Product check up is advised to be carried out to make sure whether damage s revived during transportation such as depressed shell distortion loose connection with wiring or connected parts 1 3 Unpacking Check up Each softstarter has certificate of quality and user s manual Please make sure whether the certificate and the manual are intact and conform to each other 2 Installation For keeping a good product capability the softstarter must be installed vertically Installation space should strictly obey the following requirements Good ventilation shoul
2. Full voltage running state current limit Quick speed ramp optional Deceleration ramp optional current curve running current initial voltage optional YF acceleration ramp optional Soft Startup Soft Stop Voltage Current Feature Curve PRR Soft Starter User s Manual 6 1 Initial Voltage Setting U0 Initial voltage for startup 0 50 Ue stepless adjustable Initial voltage for kick startup voltage 20 100 Ue stepless adjustable Select 100 as full voltage startup at present the softstarter works as a switch without contact 6 2 Startup Ramp Time Setting Ramp ascending time 1 180S adjustable 6 3 Stop Ramp Time Setting Ramp descending time 1 1805 adjustable 6 4 Startup Current Limit Startup current 1 5 4 le stepless adjustable with the data set the biggest startup current will be limited in this range EP The above parameters should be set when the starter is not working Under the startup soft stop and full voltage working state all the parameter settings will not be effective All the technical parameters of softstarter are effective when the environment temperature is below 45 C If the environment temperature is from 45 C to 60 C the rated power should be decreased by a power level PRR Soft Starter User s Manual 7 Softstarter Function Chart Function No Function Explanation Data Explanation Mfr Value PROO Control mode 0 keypad
3. If the altitude is above 2000m the capacity should be decreased accordingly for application PRR Soft Starter User s Manual 5 1 Terminal Function Y1 Y2Y3 T2 30A 30B 30C RUNSTOPBX RST PE 123456 7 8 9 10 11 12 13 14 15 i Terminal Technical las Terminal Name Description netos 1 Start delay Signal Y 1 Middle terminal AC250V5A 2 Start delay Signal Y2 Y1Normal close AC250V5A 3 Start delay Signal Y3 Y1Normal open AC250V5A 4 Bypass Signal T1 Middle terminal AC250V5A 5 Bypass Signal T2 T1Normal close AC250V5A 6 Bypass Signal T3 T1Normal open AC250V5A 7 Fault Signal 30A Middle terminal AC250V5A 8 Fault Signal 30B 30A Normal close AC250V5A 9 Fault Signal 30C 30A Normal open AC250V5A 10 Common Terminal CM External Common Terminal 11 Startup Signal RUN CM effective turn on 12 Stop Signal STOP CM effective turn on 13 Free stop Signal BX CM effective turn on 14 Reset Signal RST CM effective turn on Function 15 PE Ground Ground Terminal PRR Soft Starter User s Manual 5 2 Basic Wiring Diagram RST ie 3 52 51 R 15 14 13 12 PE RST BX STOP O TL Ya vs 1 3 30A 30B 30C a RJ ma O 5 Lu S terminals of softstarter are input terminals while U W are output terminals QF auto air breaker KM contactor RJ over heating protection relay RD1 fuse L11 N is connected to 220V PRR Soft
4. Starter User s Manual 5 3 Recommended Wiring Diagram R ST iS I4 I E2 PE RST BX STOP Y v2 Tl 13 3 A 308 30 3 _ 1 31 1 e Lil N IPE Grounding wire should be as short as possible and should be connected to the nearest grounding point better on the installation board against the softstarter Installation board should also be grounded Controlling Loop User can select to use bypass contactor It can be switched to bypass circuit running automatically To select this operation mode an AC contactor should be fixed to be ordered separately PRR Soft Starter User s Manual 5 4 Optional Parts Adaptable Rated Contactor Model Wiring Motor KW Madel Current A Coptional MM 15 PRR1015 30 4 50 10 po PRR1022 45 4 50 10 30 PRR1030 60 4 80 16 3 PRR1037 7 45 1045 55 PRR1055 CJX4 80 1 CJX4 115F 6 CJX4 95 25 25 CJX4 150F 3 75 PRR1075 90 PRR1090 CJX4 185F 35 76 9 150 320 400 440 560 160 PRR1160 CJX4 330F 200 PRR1200 CJX4 500F 220 PRR1220 CJX4 500F PRR1250 CJX4 630F 280 PRR1280 CJX4 630F 150 315 PRR1315 630 CJX4 630F 150 6 Setting Keypad Panel PRR Soft Starter User s Manual Note The following is the operation instruction Name of Keys of keypad panel Keys Fig 1 1 keypad panel Mode mo
5. T1 T2 T3 T4 2 Function Codes The table below shows the function codes supported by ETD soft starters description 03 Read Holding Registers Read the binary contents of holding registers in the slave Broadcast is not supported Less than 10 registers one time 06 Preset Single Register Preset a value into a single holding register 3 Protocol Converter It is easy to turn command into an ASCII command following the lists 1 Replace the CRC with the LRC 2 Change each byte in RTU command into a corresponding two bytes in ASCII 3 Adda colon character ASCII hex at the beginning of the message and end with a carriage return line feed CR LF pair ASCII OD and 0A hex So we will introduce RTU Mode in the following part If you use ASCII mode you can 31 PRR Soft Starter User s Manual use the above lists to convert 3 Address and meaning of command 1 Description of rules of function codes and parameters address 1 use the function code as parameter address High order byte FO Low order byte 00 3C Please put the function code low byte into hex format For example PR14 display on the board parameter Address is FOOE Note in this situation only one function code is allowed operation of read write one time Some functions parameters are read only they can not be changed and the other functions parameters are neither read nor changed some functions
6. W to motor A Grounding terminal PE shall be properly earth connected grounding impedance not exceeding 40 A Capacitance can not be connected to the output of softstarter but capacitance can be connected to the input of softstater when it is used for improving power factor CONTENTS Product Model and Consignee Check Installation Functional Block Diagram TT Technical Parameters Setting Function Chart Function in Details t ROO d 5 R i State Indication Appendix 1 Maintenance Coe Appendix 2 Fault Diagnosis Appendix 3 Applications
7. angle Voltage can thus be increased step by step and startup current will be under control After startup the bypass contactor will short circuit the SCR The motor will finally be driven into the electricity network for operation PRR Soft Starter User s Manual 4 Technical Parameters Control power supply AC 380V 20 50 60Hz 3 Phase power supply AC 380V 20 50 60Hz Nominal current Motor power Applicable motor Startup mode Stop mode Relay output Startup frequency Protection function 30A 630A totally 16 kinds of rated currents 15 315KW rated voltage 380V Common squirrel cage type asynchronism motor Voltage kick soft startup current limiting startup 150 400 adjustable voltage ramp startup 17 180seconds adjustable Free stop soft stop 1 180seconds adjustable Delay running output fault output full voltage output by pass contact dot 5A 250VAC for frequent or infrequent startup Advise not exceeding ten times per hour Phase loss of input over load short circuit over heating and etc Safety degree Cooling mode IP20 Cooling naturally Installation mode Hanging mode Environment conditions 5 Wiring Environment temperature 10 C 50 C Relative humidity 95 20 C 5 C Free from flammable gas explosive gas and corrosive gas free from electric dust to be installed indoors with good ventilation Vibration below 0 5G
8. control 1 1 External terminal control PRO1 Startup mode 0 Voltage ramp startup 1 1 Current limit startup 2 Kick startup PRO2 Startup delay time 0 6005 05 PR03 Stop mode 0 Free stop 1 Soft stop 0 PRO4 Torque compensation 0 50 Rated voltage 5 PROS Kick voltage 20 100 Rated voltage PROG Kick time 1 608 PRO7 Ramp ascending time 1 1805 205 PR08 Ramp descending time 1 1805 205 PRO9 Startup current limit 150 400 Rated current PRIO Startup time interval 1 36008 PR11 Data initialization 0 No action 0 lAction manufacturer value restored PR12 Fault memory 1 Present fault PR13 Fault memory 2 previous fault FEE PR14 Fault memory 3 Previous two faults 15 Fault memory elimination 0NoAction 1 action lo PR16 Overload protection time 1 180S 608 PR17 OL protect value 100 400 rated current 300 PR18 Stop bits 1two 0 PR19 Parity check 0Odd 1Even 2No check 0 PR20 Communication baud rate 0 1200 bit 1 2400 bit 2 2 4800 bit 3 9600 bit 4 19200 bit PR21 Communication Address 1 127 softstarter address 1 15 PRR Soft Starter User s Manual PR22 Selection of ASCII mode 0 ASCII mode and RTU mode 1 mode PR23 Motor power 1 315KW PR24 Reserved 0 9999 8 Function in Details PROO Control mode 0 Keypad control 1 1 external terminal control Control mode selection can be operated directly through the panel keypad and can also be done by external terminal control The manufactu
9. environment Applied Machinery Starting Starting current Centrifugal Pump Centrifugal Fan Centrifugal Compressor centrifugal Filter Piston type compresso Spiral type compresso Piston Pump Fan or Heavy Load gt 308 presser presser Pump constant Fan or Heavy Load Fan gt 30SMn M n2 Cooling Fan Compressor Belt Convey M constant Grinding machine Elevator M constant PRR Soft Starter User s Manual Belt conveyor Ttype Cable Car M constant Spiral type Belt Conveyor Conveyor Mn Belt conveyor or Circular saw heavy load Band saw 30S M constant Grinding Machine Mixer M I n Draw bench press Mn Grinding machine Muller or heavy load M I n Hot Pump pump Mn Grinding machine Cutter or heavy load Mc constant Presser or heavy load Rolling Machine Mn refiner Standard Load Pressure Machine Presser or heavy load Lathe M I n 10096 3 350 Note cubage type of fan is M n the others are M gt User can set the parameter according to actual load To a little heavy load and heavy load the manufacturer recommend user to choose higher power of softstarter Furthermore the startup mode of Kick startup is recommended for heavy load and heavy inertia PRR Soft Starter User s Manual Communication Manual for ETD Modbus Version 1 5 I General Modbus is a serial and asynchronous communication protocol Mo
10. 5 set to 50 rated voltage Kick time means the interval to exert high voltage adjustable between 1 608 The manufacturer value is set to 2S PRO7 Ramp ascending time 1 180S 20S Ramp ascending time means the interval to bring the voltage from OV up to rated voltage Ue The manufacturer value is set to 20S PROS Ramp descending time 1 180S 20S Ramp descending time means the interval to bring the voltage from rated voltage Ue to The manufacturer value is set to 205 PRO9 Startup current limit 150 400 rated current 400 It works when PROL is set to 1 startup current limit PRO9 Te please adjust PROS for a successful start less current is preferred 10 1 36008 2408 This equipment is small sized and you can only restart 1t when the radiator cools down from the previous startup otherwise the machine will stop due to over heating protection The startup interval is adjustable and no more than 10 startups per hour are preferred for full load startups The manufacturer value is set to 240 PR11 Data initialization 0 no action 0 action manufacturer value is restored When the data is in disorder please restore the manufacturer value by setting data initialization 1 PRR Soft Starter User s Manual Store and display the code for present fault for example O means no fault 1 means OH overheating fault 2 means OC over current fault 3 means PF phase loss 4 means OL over load or jam
11. A Prostar PROSTAR SOFTSTARTER PRRI000 SERIES 15 315KW INSTRUCTION MANUAL PREFACE Thank you for your choice of Prostar Soft Starter As the return of your trust we will provide the perfect quality and wholehearted service to you Adopting modern control theory modularization design DSP controlled high quality material and parts components together with advanced SMT manufacturing engineering PRR1000 series softstarter is a high tech product combing digit computer and modern automatic control theories It is characteristic of high performance high quality and skinny volume and is widely applicable for starting and protection of three phase motors in various industries Notes This instruction manual provides information with respects to installation parameter setting trouble diagnosing and proper operation This manual should therefore be kept properly and a careful reading shall be required before any operation attempt to avoid any accidental casualties or damage s to the facilities Special Notice A Installation operation maintenance or checking to this product shall be required before reading carefully this instruction manual and ensuring proper use A Power shall be disconnected before any wiring Never touch power terminal with hand or conduct object Never put or drop foreign substance into soft starter A Connect input terminals S and T to urban power supply of 380V connect output terminals U V and
12. and output wire of softstarter regularly Check whether the grounded wire is reliable and whether terminals become flexible Renew startup contact implement relay regularly Check whether there is imprint or parts damage caused by overheating Check whether the wire is aging Note When softstarter breaks down or doesn t work properly please handle it according to this manual Contact the manufacturer when you fail to solve the problems Users are not allowed for any repair by themselves 24 PRR Soft Starter User s Manual Appendix 2 Fault Diagnosis Problems Motor sounds buzz when power is on Motor can not work normally with the startup State explanation Softstarter is in standby state Troubleshooting 1 Check whether the bypass contactor is blocked at the closed place 2 Check whether the silicon controlled rectifier SCR is spark through or damaged 1 In external control state check whether the terminal RUN CM is turned on 2 Check whether the control circuit connection is right control switch works normally Startup current exceeds the set parameter set No control signal input power supply 1 Check whether work voltage is normal state 1 Check every parameter set value one by one Wrong make sure that the set values match the practical parameters of motor 2 Check the current limit value Phase Check three phases voltage judge whether there occu
13. cked PRR Soft Starter User s Manual Eg 1 Preset Single Register function code as parameter address Change acc time PR07 to 10s in slave soft starter 1 Query Slave Function Register Register Preset Preset CRC CRC Address Address Hi Address Lo Data Hi Data Lo Lo Hi 01 Function code PRO7 value 10 Response Slave Function Register Register response response Address Address Hi Address Lo Data Hi Data Lo 01 FO 07 00 04 Function code PRO7 Not allowed to change Eg2 Preset Single Register definition address Run slave soft starter 1 Query Slave Register Register Preset Preset CRC CRC Function Address Address Hi Address Lo Data Hi Data Lo Lo Hi 01 Forward run Response Slave Register Register response response CRC CRC Function Address Address Hi Address Lo Data Hi Data Lo Lo Hi 01 06 20 00 00 01 43 CA Operate successfully Eg3 Read Holding Registers function code as parameter address Read the value of F017 in slave soft starter 2 Query Slave Starting Starting No of No of Function Address Address Hi Address Lo Points Hi Points Lo 34 PRR Soft Starter User s Manual Response Slave Starting Starting Function Data Hi Data Lo Address Address Hi Address Lo Lo Hi 02 03 FO 11 00 04 2 3F Eg4 Read Holding Registers Definition address Read the status and current of slave soft starter 2 Query Slave Star
14. d be available to the installation environment which should avoid direct sunlight for indoor installation Environment temperature 10 C 50 C Relative humidity lt 95 20 C 5 C Environment conditions Free from flammable gas explosive gas and corrosive gas free from electric dust to be installed indoors with good ventilation Vibration below 0 5G If the altitude is above 2000m the capacity should be decreased accordingly for application Structure Dimension 15KW 55KW 3 PRR Soft Starter User s Manual PRR Soft Starter User s Manual External Dimension Unit mm Model PRR1015 15KW PRR1022 22KW PRR1030 30KW PRR1037 37KW PRR1045 45KW PRR1055 55KW PRR1075 75KW PRR1090 90KW Installation Dimension Unit mm 162 162 162 162 162 162 194 194 PRR Soft Starter User s Manual mmn 39 ome C99 ms Note PRR1015 PRR1200 softstarter with plastic housing available in stock PRR1220 PRR1315 softstarter with metal housing available in stock 3 Functional Block Diagram ru AC Power Voltage Detection ion Computer Fuzzy Control System Three reverse parallel connection SCR modules are adopted as power element The softstarter can pick up synchronization signal from input voltage sampling and realize feedback fuzzy control by output current sampling trace the phase automatically and control phase displacement
15. dbus protocol is a general language applied to PLC and other controlling units This protocol has defined an information structure which can be identified and used by a controlling unit regardless of whatever network they are transmitted Modbus protocol does not need a special interface and a typical physical interface is RS485 You can read reference books or ask for the details of MODBUS from us II Modbus Protocol 1 Transmission mode 1 ASCII Mode When controllers are setup to communicate on a Modbus network using ASCII mode each 1 Byte in a message is sent as two ASCII characters For example hexadecimal data include two ASCII characters 3 33H 1 31H Characters 0 2 3 Y TU ASCII 30H 31H 32H 33H 34H 35H 36H 37H Code Characters 8 9 A B D E F ASCH 38H 39H 41H 42H 43H 44H 45H 46H Code The format for each byte in ASCII mode is Coding System Hexadecimal ASCII characters 0 9 A F One hexadecimal character contained in each ASCII character of the message Bits per Byte 1 start bit 7 data bits least significant bit sent first 28 PRR Soft Starter User s Manual 1 bit for even odd parity no bit if no parity 1 stops bit if parity is used 2 bits if no parity Error Check Field Longitudinal Redundancy Check LRC 2 RTU Mode When controllers are setup to communicate on a Modbus network using RTU Remote Terminal Unit mode each 8 bit byte in a message co
16. de Control box displays function code PRX X The current key and stop key switch to each other To be used with mode key Under the PRX X display set sep state press set key the control box will display the k corresponding value of function code Press up and down ey key to change its value and then press set to save the changed value A up key Under PRX X display state press up down key to down select other function code After enter the function code ke they are used to change the value of the function code run ke Press run key for startup Stop Reset stop res Under any state press stop reset key it will have priority t k be valid Press twice for free stop of the softstarter And it et key also can reset the softstarter when malfunction happens PRR Soft Starter User s Manual Special Display Content and Interpretation Display Items Interpretation _pR Show reset process under single control mode it displays such content after reset normally RUN startup state STOP Stop state OUT Run state SST Soft stop state Count Down Delay state Set the Starter through Keypad Main adjustable parameters Initial voltage Startup time Stop time Startup current Startup mode Voltage ramp soft startup Current limiting soft startup Kick soft startup Stop mode voltage ramp soft stop mode Free stop mode
17. er must choose two stop bits 20 PRR Soft Starter User s Manual Parity check 0 Odd check 1 Even check 2 No check Set the mode of Parity check The manufacturer value is set to Odd check PR20 Communication baud rate O 1200 bit 1 2400 bit 2 2 4800 bit 3 9600 bit 4 19200 bit Set the communication baud rate The manufacturer value is 4800 PR21 Communication Address 1 127 softstarter address Set softstarter address The manufacturer value is 1 PR22 Selection of ASCII mode 0 ASCII mode 0 and RTU mode 1 RTU mode Set communication mode of Modbus The manufacturer value is ASCII mode PR23 Motor power 1 315KW 22KW Motor power setting is applied for current display warp revising The manufacturer value is set to 22KW PR24 reserved 0 9999 0 21 PRR Soft Starter User s Manual 9 State Indication 9 1 Fault Indication Over current protection OC OCI or OC2 will display because of different malfunctions Phase loss protection P F Overheating protection OH Over load protection OL 9 2 Process State Display Stop state STOP Delay state Time count down Startup state RUN Running state OUT Soft stop state RT 9 3 Current Display During the debugging process press the mode key The LED display value of current can be amended by adjusting PR17 function Observe whether the max amount of current conforms to the setting amount so that we can see whet
18. fault PR13 Fault memory 2 Last fault Store and display code of last fault for example 0 means no fault 1 means OH overheating fault 2 means OC over current fault 3 means PF phase loss 4 means OL over load or jam fault pua Faultmenory3 Store and display the code of fault before last for example O means no fault 1 means OH overheating fault 2 means OC over current fault 3 means PF phase loss 4 means OL over load or jam fault PRI5 NM 0 no action 0 Fault memory elimination l action Available when the PR15 setting is 1 all present fault codes code of last fault and the code of previous two faults will be eliminated and the display will be 0 When PRI5 setting is 0 the program will be renewed automatically after each fault occurs The manufacturer value is 0 PR16 Overload protection time 1 1805 605 When the continuous overload time has exceeded the setting time protection program will work At the same time it displays OL This will protect the motor from long time jam and overload running The manufacturer value is set to 605 PR17 OL protecting value 100 400 rated current 300 Set the current threshold of overload protecting The manufacturer value is set to 300 of rated current PR18 Stop bits 0 l two 0 Set numbers of stop bits The manufacturer value is one Note User must choose one stop bit when parity check it enable when parity check is null us
19. her the data setting is correct or not When the startup is finished and it works with full voltage it can be examined by external current mutual inductor with ammeter display PRR Soft Starter User s Manual 9 4 Indicator Display Indicator state Softstarter state Explanation RUNO Light is on in running state after FWDO startup finished and light is off Running state DGTO in standby state FRQO RU Light i hen delay begi ight is on when delay begins FWDO EE Delay state and light is off when delay DGTO ended FRQO RUNO E Light is on when external control FWDO External control works and light is off in keypad DGTO state state FRQO Light is on and current is RUNO displayed when press MODE key FWDO during the startup process light Current display DGTO goes off when press it again and FRQO state is displayed O indicates the light is on O indicates the light is off 23 PRR Soft Starter User s Manual Appendix 1 Maintenance E Besure the power of softstarter is turned off before you start any maintenance and checkup Please check the cooling channel of softstarter regularly make sure it isn t blocked by trash and dust Keep and install softstarter in a place far from strong eroding high powder high temperature or high humidity Softstarter should avoid strong vibration Clean it regularly and check whether it works properly Check input wire
20. it binary value The CRC is started by first preloading a 16 61 register to all 1 s Then a process begins of applying successive 8 bit bytes of the message to the current contents of the register Only the eight bits of data in each character are used for generating the CRC Start and stop bits and the parity bit do not apply to the CRC A procedure for generating a CRC is 1 Load a 16 bit register with FFFF hex all 1 s Call this the CRC register 2 Exclusive OR the first 8 bit byte of the message with the low order byte of the 16 bit CRC register putting the result in the CRC register 3 Shift the CRC register one bit to the right toward the LSB zero filling the MSB Extract and examine the LSB 4 If the LSB was 0 Repeat Step 3 another shift If the LSB was 1 Exclusive OR the CRC register with the polynomial value A001 hex 1010 0000 0000 0001 5 Repeat Steps 3 and 4 until 8 shifts have been performed When this is done a complete 8 bit byte will have been processed When the CRC is appended to the message the low order byte is appended first followed by the high order byte PRR Soft Starter User s Manual 2 Functions and Format 1 Modbus Message Framing 1 ASCII Framing LRC START ADDRESS FUNCTION DATA END CHECK 2 CHARS 1 CHAR 2 CHARS 2 CHARS n CHARS 2 CHARS CRLF 2 RTU Framing LRC START ADDRESS FUNCTION DATA END CHECK T1 T2 T3 T4 8 BITS 8 BITS nx8BITS 16 BITS
21. l PR02 Startup delay time 0 600S OS Startup delay time is set for startup preparation and the motor will not start in this interval Count down mode is used for display and the time can be set from O to 600 seconds And it will output a normal open normal close contact dot signal By applying the signal a warning signal may be affected for safety attention The manufacturer value is set to 05 You can stop by selecting two modes O free stop 1 soft stop The manufacturer value is set to 0 Free stop means that the voltage of softstarter will reduce directly from Ue to OV and the motor will run with inertia till its stop as shown in Figure 4 U Ue T Free Stop Feature Curve Figure 4 Soft stop means that the voltage of starter will reduce gradually from Ue to OV when the voltage drops The soft stop can help resist water hammer domino effect as shown in Figure 5 Soft Stop Feature Curve Figure 5 18 PRR Soft Starter User s Manual 4 Torque compensation 0 50 rated voltage 5 Torque compensation means to adjust the torque produced by initial voltage UO The manufacturer value is set to 5 PROS Kick voltage 20 100 rated voltage 50 As for a load with big static torque an instant high voltage must be inflicted so that it can start smoothly with the torque big enough the kick voltage range is from 20 to 100 percent of the rated voltage The manufacturer value 1
22. ntains two 4 bit hexadecimal characters The main advantage of this mode is that it s greater character density allows better data throughput than ASCII for the same baud rate The format for each byte in RTU mode is Coding System 8 bit binary hexadecimal 0 9 A F Two hexadecimal characters contained in each 8 bit field of the message Bits per Byte 1 start bit 8 data bits least significant bit sent first 1 bit for even odd parity no bit if no parity 1 stops bit if parity is used 2 bits if no parity Error Check Field Cyclical Redundancy Check CRC 2 Baud Rate Setting range 1200 2400 4800 9600 19200 3 Error Check 1 ASCII Longitudinal Redundancy Check LRC The LRC is calculated by adding together successive 8 bit bytes of the message discarding any carries and then two s complementing the result It is performed on the ASCII message field contents excluding the colon character that begins the message and excluding the CRLF pair at the end of the message 29 PRR Soft Starter User s Manual A procedure for generating an LRC is 1 Add all bytes in the message excluding the starting colon and ending CRLF Add them into an 8 field so that carries will be discarded 2 Subtract the final field value from FF hex all 1 s to produce the ones complement 3 Add 1 to produce the twos complement 2 RTU Cyclical Redundancy Check CRC The CRC field is two bytes containing a 16 b
23. parameters can not be changed when the soft starter is running some functions parameters can not be changed whatever state the soft starter is in The range unit and related introduce of parameters are important when you change the functions parameters 2 Definition address Parameters and addresses are hexadecimal representation 1 Running status parameters Parameters address Parameter Description read only 1001 Soft starter status High order byte is 0 low order byte is soft starter status 0000 stop 0001 run 0002 1 0003 OC2 0004 PF 0005 OH 0006 OL 1002 Output current 32 PRR Soft Starter User s Manual 2 Control commands Parameters address Parameter Description write only 2000 0003 decelerate stop 0004 free stop 0008 run No direction 0009 reset 3 Communication parameters Parameters address Parameter Description read only 3000 0000 no malfunction 0001 illegal function 0002 illegal address 0003 illegal parameters 0004 LRC error 0005 CRC error 0006 system locked 41 Response Command Description Parameter Description Read parameter responses 1 return code value in normal response 2 not allowed to read FFFF hex is returned Write parameter responses 0001 operate successfully 0002 less than min value 0003 greater than max value 0004 not allowed to change 0005 in fault status 0006 system lo
24. rer value is 1 PRO1 Startup mode 0 Voltage ramp startup 1 1 Current limit startup 2 Kick startup You can start by selecting one of the following three modes 0 Voltage ramp startup 1 current limit startup 2 kick startup manufacturer value is 1 A Voltage ramp startup Set PRO1 to 0 and set ramp startup time t PRO7 and torque compensation voltage PRO4 UO the motor will start along with the increasing input voltage and the speed will accelerate accordingly till its top speed as shown in Figure 1 Voltage Ramp Startup Feature Curve Figure 1 16 PRR Soft Starter User s Manual A Current limit startup Set PRO1 to 1 and set startup current limit percent Is PRO9 and Torque compensation voltage PRO4 The current of the motor will increase until the voltage ramp reaches Is then it will stop and the speed will accelerate to its full speed After that the current will decrease to below the rated current Ie as shown in Figure 2 Is T Current Limit Startup Feature Curve 2 A Kick startup Set PROI to 2 and set ramp start time t PRO7 and torque compensation PR04 kick time t PRO6 The motor will start rapidly along with the increasing voltage then the voltage will increase in a ramp way and the speed will accelerate to its full speed It is better for startup motor with big inertia as shown in Figure 3 PROG T Kick Startup Feature Curve 3 PRR Soft Starter User s Manua
25. rface l interface Hardware uses communication MAX485 the following are the pins of 485 interface VCC 5V power supply GND ground of 5V Connect A to A of PLC or other converter connect A to B of PLC or other Converter when soft starter communicates to other devices A 1 VCC 2 A 3 A 4 GND 36 PRR Soft Starter User s Manual 2 Structure of Field Bus PLC PC Field Bus 29 Soft starter HA Soft starter 1 Connecting Diagram of Field Bus RS485 Half duplex communication mode is adopted for ETD soft starter snjeig en eA enoy gt Daisy chain the devices together Do not use spur lines or a star configuration because they will produce reflecting signals to interfere communication 485 Terminating Resistors of 120 Ohms should be used at the ends of Modbus 485 loops In the first example below the terminator should be placed at the PLC and Modbus device 4 Correct Soft starter Modbus Devices 37 wrong Soft starter PRR Soft Starter User s Manual Modbus Devices Soft starter Modbus Devices Please note that at the same time in half duplex connection only one inverter can communicate with PC PLC If two or more than two inverters upload data at the same time bus competition will occur which will not only lead to communication failure but higher current to certain element
26. rs during M is phase loss and eliminate fault startup l Check whether the connection of output terminals of softstarter and what of motor is Wire right and reliable connection of motor is open Current limit function fails 2 Check the input terminals voltage judge whether internal circuit of motor is open 3 Check whether there is phase loss in input terminal Check whether the startup current set is right 2 Check whether the connection of current mutual inductor is right 3 Check whether the current mutual inductor works properly and matches the motor 1 Check whether softstarter installation value Environment environment has good ventilation and is installed temperature is vertically too high 2 Check whether softstarter avoids direct sunlight successfully Over run 1 Check whether the softstarter has short circuit current of in output connection 25 motor Softstarter is short circuit between input and output terminal connection PRR Soft Starter User s Manual 2 Check whether overload of motor or damage happens 3 Check whether phase loss fault happens in the motor 1 Check whether the bypass contactor is blocked at the closed place 2 Check whether the silicon controlled rectifier SCR is sparked through or damaged CE The above problems must be handled by professionals Users are not allowed for any repair by themselves Appendix 3 Application
27. s as well No direct grounding shall be allowed for any points of RS485 network All the equipment in the network shall be well grounded via their own grounding terminal Please note that grounding wires will not form closed loop in any case Please think over the drive capacity of PC PLC and the distance between PC PLC and inverter when wiring Add a repeater if drive capacity is not enough Modbus repeaters may be used to extend the length of the loop but the response time will be delayed Using repeaters on slow devices may cause timeout problems AN All wiring connections for installation shall be made when the soft starter is disconnected from power supply 0180 0
28. ting Starting No of No of Function Address Address Hi Address Lo Points Hi Points Lo 02 03 10 00 00 02 Response Slave Byte CRC CRC Function DataHi DataLo DataHi Data Lo Address Count Lo Hi 02 03 04 00 02 00 00 68 F3 3 Additional Remarks 1 Expressions during communication course Parameter Values of Current actual value X 10 Others parameter Values actual value X 1 Parameter value is the value sent in the data package Actual value is the actual value of inverter After PC PLC receives the parameter value it will divide the corresponding coefficient to get the actual value NOTE Take no account of radix point of the data in the data package when PC PLC transmits command to inverter The valid value ranges from 0 to 65535 Function codes related to communication Function Setting Rang Mfr s Value Code PR18 Stop bit 0 one bit 0 1 two bits PRR Soft Starter User s Manual Parity Check 0 Odd PR19 Even 2 No checkout PR20 Baud Rate 0 1200 1 2400 2 4800 3 9600 4 19200 PR21 Soft starter s Address 1 127 Address PR22 Modbus Selection 0 ASCII Mode RTU Mode You can read running status value of function code and preset functions value of soft starter regardless of value of PROO Please make sure functions code related to communication consonant with the PLC PC communication parameters when soft starter communicates with PLC PC Physical inte

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