Factory-Installed Variable Frequency Drives (VFD) in RenewAire
Contents
1. A RenewAire OW Energy Recovery Ventilation 4510 Helgesen Drive Madison WI 53718 608 221 4499 800 627 4499 Fax 608 221 2824 support renewaire com www renewaire com Factory Installed Variable Frequency Drives VFD in RenewAire ERV Ventilators AAWARNING RISK OF FIRE ELECTRIC SHOCK OR INJURY OBSERVE ALL CODES AND THE FOLLOWING 1 Before servicing or cleaning the unit switch power off at disconnect switch or service panel and lock out tag out to prevent power from being switched on accidentally More than one disconnect switch may be required to de energize the equipment for servicing This installation manual shows the suggested installation method Additional measures may be required by local codes and standards Installation work and electrical wiring must be done by qualified professional s in accordance with all applicable codes standards and licensing requirements Any structural alterations necessary for installation must comply with all applicable building health and safety code requirements This unit must be grounded Use the unit only in the manner intended by the manufacturer If you have questions contact the manufacturer When cutting or drilling into unit wall or ceiling do not damage electrical wiring and other hidden utilities Do not re wire the VFD s to control more than one motor per VFD Do not operate the motors in this unit above the motor s rated full load amps FLA as2. s defaults for the HVAC Application Macro by parameter number indicates it is not visible in Short View ABB HVAC Default Settings as Shipped BY FUNCTION RenewAire HVAC HVAC Pressing SAVE softkey when USER 1 LOAD is selected returns the VFD to the parameters as shipped from RenewdAire Pressing SAVE softkey when HVAC DEFAULT is selected returns the VFD to the ABB defaults ENGLISH AM Sets language displayed to English with US units Others available include Espanol Francais FD rating Equal to Motor FLA Must be set equal to motor nameplate FLA CRITICAL FOR SAFETY OTOR NOM FREQ 0 0 Hz 60 0 Hz Must be set 60 0 Hz OTOR NOM SPEED Size Dependent Usually 1750 OTOR NOM POWER VFD rating Equal to Motor HP Must be set to Motor nameplate HP 1 XT1 COMMANDS D11 11 Enables 2 wire start stop when closing contact between 9 amp 12 Jumper req d between 10 amp 11 Name Selection gt vu v am a gt Q rs O 9902 NGUAGE EE so Oo S so So OTOR NOM VOLT OTOR NOM CURR so rox Ne 907 90 909 1001 Ne o0 lt Va lt lt m 7 Zz o a a Cc wn v 2 ga ey m 1103 1104 pas ala a wv av m ma wn m ES EF1 MIN 1105 REF1 MAX 1 Al1 Selects signal source for external reference REF 1 Change to 1 Al1 for operation by an external control signal offsetting the input to the VFD output offsetting the input to the VFD output sw
3. 4 20mA analog inputs The external control devices can be connected to this ERV to operate each blower independently or for one blower to act as leader and the other blower to act as follower In leader follower mode a single external switch or relay calls for operation and the leader VFD sets SPEED to internal presets or in response to an analog input signal The follower VFD then operates at either exactly the same speed at an offset above or below the leader s speed or at a scaled speed The VFD s are pre programmed at the factory so only a few parameters need change for a specific installation CONNECTING EXTERNAL CONTROLS If this ERV is equipped with damper s the ON signal is connected to the terminal strip in the electrical enclosure E box If this ERV is not equipped with damper s and has 2 VFDs the ON signal is connected directly to the VFDs The SPEED signals are always connected directly to the VFD s VFD Addendum 138291_000 VFD_Addendum_Jan12 indd Due to continuing product development specifications are subject to change without notice Revised 01 2012 2012 RenewAire LLC www renewaire com Page 1 WIRE ROUTING Route input power cables motor cables and control cables separately to decrease electromagnetic interference caused by the rapid changes in the drive output voltage Where control cables must cross power cables make sure that they are arranged at an angle as near to 90 degrees
4. change without notice 138291_000 VFD_Addendum_Jan12 indd Revised 01 2012 www renewaire com 2012 RenewAire LLC Page 3 Fig 1 Connection of ON signals to low voltage terminal strip in ERV E box FIELD WIRING FACTORY WIRING 5 2 ip On board 24VAC Power NON POWERED EXTERNAL CONTROL 6 CONTACTS one FA Relay or Damper Actuator Separate contacts for FA and EA Operation EA Relay or Damper Actuator JUMPER Call for FA Blower Operation FIELD WIRING FACTORY WIRING a ees NON POWERED EXTERNAL CONTROL lt CONTACTS e FA Relay or Damper Actuator One contact for both FA and EA operation EA Relay or Damper Actuator JUMPER Call for UNIT Operation JUMPER Q FIELD WIRING FACTORY WIRING Do not connect terminals Y 1 amp 2 to terminals 3 5 On board 24VAC Power POWERED EXTERNAL CONTROL 6 CONTACTS EXTERNAL 24 VAC SOURCE Call for FA Blower Operation FA Relay or Damper Actuator Separate contacts for FA and EA Operation EA Relay or Damper Actuator Call for EA Blower Operation Fig 2 ERVs with 2 VFDs and NO Dampers only Separate ON Signals connected to each VFD O1 SCR O2 an O3 O4 Os O6 O7 A O8 AGND 9 10 11 12 15 OLS ry O1 O2 O3 O4 O5 C Close contact to turn Blower ON DO NOT CONNECT POWER O86 TO TERMINALS 9 15 ON O7 a0 EITHER VFD O8 AGND 9 10 11 12 2 aon 24VAC po
5. conditions are not within the VFD operating temperature range or make other provisions to bring the VFD operating condition into the acceptable ambient temperature range RenewAire commercial ERVs are VFD ready in extreme climates consider field installing VFDs in a climate controlled indoor electrical cabinet ORIENTATION ON AND SPEED SIGNALS VFD operation in this unit is dependent on two signals an ON signal and a SPEED or REFERENCE signal The sources and types of these signals can vary If the ERV is equipped with dampers the ON signal to the VFD comes from the end switch on the damper If the ERV is not equipped with dampers the ON signal comes from an external control connected directly to the VFD When an ON signal is received by the VFD it starts the motor The VFD then operates the blower at the speed established by the SPEED signal The SPEED signal is often provided by an external control but in some applications pre set speeds are set inside the VFD and are selected by external switches or relays PRINCIPLES OF EXTERNAL CONTROL This ERV can be operated by various external control devices including remote switch or relay digital time clock with relay occupancy sensor with relay and carbon dioxide sensor with relay and analog output These devices are commonly known as 2 wire 3 wire and 4 wire devices A Building Management System BMS can control this ERV through relay contacts and with 0 10vdc or
6. cover most needs but some parameters will need to be set to interact with the external control system Access the keypad s through the removable cover to the E box ABB Key Pad Buttons Zz Buttons Vive a The function of each Softkey changes and is shown just above the Softkey in the display SIMPLE STARTUP CAUTION 230V Power Supplies ERVs rated for 208 230VAC power supplies are shipped with VFD parameters set for 208V operation For 230VAC operation change the following Parameters 2003 MAX CURRENT Change to match the motor FLA for 230V as listed on the unit nameplate 9905 MOTOR NOM VOLT Change from 208V to 230V 9906 MOTOR NOM CURR Change to match the motor FLA for 230V as listed on the unit nameplate TO START ERV 1 Turn off power to the ERV at its Disconnect Switch e Make sure the ERV is wired to provide an ON signal See Control Wiring Schematics later in this Manual You may need to install a temporary jumper at the ERV or VFD low voltage terminal strip e VFDs are set at the factory to respond to the keypad If an external controller providing an analog input is connected to the VFD you may want to temporarily disconnect it e Close ERV doors and main cover for the E box leave keypads accessible 2 Turn on power to the ERV at its Disconnect Switch e Wait for keypad display to appear 3 For each VFD e Press the HAND button on the keypad Motor should start running at about 4
7. off when CO2 levels drop below a setpoint connect the Normally Open contacts of the CO2 controller terminals 3 amp 4 to terminals 9 amp 12 of the FAVFD Adjust the operating parameters of the CO2 controller to set the relay setpoint USE WITH A BUILDING MANAGEMENT SYSTEM The ABB ACS320 drive can be connected to an external control system via embedded fieldbus The embedded fieldbus supports Modbus RTU BACnet Metasys N2 and APOGEE FLN Protocols See the ABB ACS320 Drives User s Manual for details on connecting to an external control system VFD Addendum Due to continuing product development specifications are subject to change without notice 2012 RenewAire LLC 138291_000 VFD_Addendum_Jan12 indd Revised 01 2012 www renewaire com Page 7 VFD PARAMETERS VFD PARAMETER OVERVIEW VFD Parameters are instructions that the Variable Frequency Drives follow They can be adjusted by using the keypads on the VFDs In some control configurations they will need to be changed from the settings as shipped in the unit to interface with your control system To view the VFD s Parameters from the keypad press the MENU softkey Press up down arrows to highlight PARAMETERS then select it by pressing the ENTER softkey TO VIEW ALL VFD PARAMETERS VFD must be powered up something will be showing on the LED display If EXIT is displayed above the left softkey press softkey repeatedly until MENU appears above the right so
8. 25 RPM e Use the UP DOWN buttons to set motor speed as desired Confirm the motor amps are no greater than the motor FLA as listed on the unit nameplate 4 To transfer control of the VFD to a control system e Press the OFF button on the keypad Motor should stop running e Change the VFD parameters as required for the specific controls system see Control Connections and VFD Parameters below for examples see also the ABB Manuals e Press the AUTO switch on the keypad MOTOR PROTECTION BY THE VFD s Each VFD in this unit protects one motor against overload It is critical that the VFD be properly set at the Full Load Amps FLA of the motor The following Parameters must be set correctly and individually for each VFD to match the characteristics of the motor attached to it 2003 MAX CURRENT 9905 MOTOR NOM VOLT 9906 MOTOR NOM CURR 9909 MOTOR NOM POWER These parameters are set at RenewAire to match the motor controlled by the VFD In most cases they should not be changed VFD Addendum 138291_000 VFD_Addendum_Jan12 indd Due to continuing product development specifications are subject to change without notice Revised 01 2012 2012 RenewAire LLC www renewaire com Page 2 CAUTION Capacitors in VFDs retain Charge Allow 2 minutes after shutting off power to the VFDs to allow the capacitors in the VFD to fully discharge Do not connect or disconnect wires at the VFD without waiting 2 minutes CONTROL C
9. E THE SPEED SIGNAL Analog inputs are connected to terminals 2 4 as shown below It may be necessary to scale the response of the VFD to the analog SPEED signal See Scaling and Response to VFD Parameters below Fig 4 Examples of Analog Input Connections gt 4 Pag J ir 0 10vdc CONTROLLER 10kOHM POTENTIOMETER Signal cable shield screen Frequency Input 0 10vdc Frequency Input Common ground 1 O2 3 O4 Reference Voltage O5 O6 O7 Aot Connections for 0 10vdc Controller Set Jumper Al1 to BOTTOM position gt 8 AGND For 0 10vdc input place an Al2 9 40 11 12 oz VFD using 0 10vdc Jumper Al1 at BOTTOM PF l PARAMETER SETTINGS GENERAL Relay Contact or Actuator End Switch Factory Wired Parameter Setting Parameter Description Enables Frequency to be controlled by 1103 1 Al1 analog input signal from external Signal cable shield screen control Frequency Input 4 20mA PARAMETER SETTINGS 0 10vde ANALOG INPUT Frequency Input Common ground 3416 0 Properly scales display of input 4 20mA CONTROLLER a HO das 3419 Vv Sets display units as Volts O5 O6 O7 aot 3420 ov Properly scales display of input 3421 10V Properly scales display of input PARAMETER SETTINGS 4 20mA ANALOG INPUT 3416 20 Properly scales display of input Connections for 4 20mA Controller
10. GND Enables Frequency to be controlled by Since the input from the AIAIZ 9 140 11 12 15 1103 1 A11 analog input signal from external Upper VFD is 4 20mA input 010 0010 control place Jumper Al1 at TOP 2 NOTE Parameters 1501 and 1502 can be used to scale the Analog Output of the Leader VFD in order to offset or correct the speed of the Follower VFD NOTE If the FA VFD is controlled by an analog input signal it is likely that the FA VFD s response to the analog input will need to be scaled using parameters 1104 1105 1301 and 1302 See Scaling and Response to VFD Parameters below If both VFDs are to run at the same speed no scaling parameters need be applied to the EA VFD since it is controlled as a Follower USING VFD PRESETS FOR THE SPEED SIGNALS The VFD can be programmed with 3 pre set speeds Momentary contact switches can then be used to direct the VFD to operate at one of those speeds See ABB manuals for additional options Leader follower wiring can also be used to make a second VFD operate at the same speed as the first VFD Fig 6 Use of 2 Momentary contact Switches to command the VFD to operate at any of 3 pre set speeds O1 SCR O2 an O3 AGND O4 10v O5 Al2 Momentai contact calls Preset 1 5 o x O13 5 o Momentary contact calls Preset 2 Simultaneous momentary contacts call Preset 3 Pre set speeds over ride any Frequency Speed inputs Use momentary
11. ION LEVEL MEASURED CONDITION t Do7 IN Oa AO cai CO2 CONCENTRATION IN THIS EXAMPLE i MAXIMUM RESPONSE LEVEL LEVEL AT MAXIMUM DEVICE OUTPUT ADDITIONAL JOB INFORMATION NEEDED 1 MEASUREMENT RANGE the range of the values that can be measured by the Controller e g a controller set to measure CO2 from Oppm to 1100ppm 2 ANALOG SIGNAL TYPE vdc or mA 3 MINIMUM SIGNAL VALUE of the analog signal e g Ovdc or 4mA This is the signal that the controller puts out when it is measuring at the bottom of its measurement range 4 MAXIMUM SIGNAL VALUE of the analog signal e g 10vdc 20mA This is the signal that the controller puts out when it is measuring at the top of its measurement range 5 SIGNAL RANGE the difference between the maximum and minimum signal values from the controller In the case of a 0 10vdc controller the Signal Range is 10vdc In the case of a 4 20mA Controller the Signal Range is 16mA 6 ACTION LEVEL SIGNAL the value of the analog signal corresponding to the Action Level 7 MAXIMUM RESPONSE LEVEL SIGNAL the value of the analog signal corresponding to the Maximum Response Level APPLICATION EXAMPLE CO2 CONTROLLER The engineer wants the ERV to e Run at a minimum of 700 CFM regardless of CO2 levels in order to control the level of indoor air pollutants generated by the furnishings e Start to increase airflow when CO2 levels rise above 600ppm e As CO2 levels continue to rise th
12. ONNECTIONS ON SIGNAL CONNECTIONS If the ERV is equipped with Damper s and or with just one VFD the ON Signal control wires are connected to the low voltage terminal strip in the ERV E box See Fig 1 Install a jumper between terminals 2 and 3 to use the ERV s on board 24VAC power Do this when the external control s have isolated contacts that don t provide any voltage as in the top two examples Make no connections between terminals 1 amp 2 and terminals 3 5 if the external control has a voltage output to provide the ON signal This voltage must be 24VAC With ERVs equipped with no dampers and 2 VFDs the ON signal control wires are connected directly to the VFD See Fig 2 amp 3 SPEED SIGNAL CONNECTIONS Any SPEED Signal connections are made directly to the VFD see Figures 4 6 amp 7 The VFDs can accept 4 20mA or 0 10vdc analog control signals to operate at varying speeds The VFDs also can accept momentary contact inputs to operate at up to three pre set speeds VFD Parameters must be properly set to accept and act on Speed signals Wiring for analog control signals should be twisted pair single or double shielded cable with shield and drain if provided grounded at only one end of the cable LEADER FOLLOWER CONNECTIONS ON and SPEED signals can be passed from the LEADER VFD to a FOLLOWER VFD See Figures 3 amp 5 VFD Addendum Due to continuing product development specifications are subject to
13. Set Jumper Al1 to TOP position O8 AGND For 4 20mA input place A11 Al2 9 10 11 12 3419 mA Sets display units as mAmps Jumper Al1 at TOP l TF 3420 Properly scales display of input Relay Contact or Actuator End Switch 3421 Properly scales display of Input Factory Wired oz VFD using 4 20mA NOTE All wiring for analog signals connected to the VFDs should be double or single shielded twisted pair cable Ground the shield at one end of the cable only VFD Addendum Due to continuing product development specifications are subject to change without notice 2012 RenewAire LLC 138291_000 VFD_Addendum_Jan12 indd Revised 01 2012 www renewaire com Page 5 WIRING TWO VFDS FOR LEADER FOLLOWER OPERATION One VFD can provide the SPEED signal to a second VFD as shown below Fig 5 Leader Follower Connection O1 O2 SPEED input wiring not illustrated O3 O4 O5 O6 w OT S ei Frequency Output always 4 20mA VFD using 0 10vdc Frequency Output Common ground Connect VFDs as shown FA VFD will pass the Freqency Speed Signal to the EA VFD Use shielded cable and ground the shield to Terminal 1 on either VFD 1 O 2 O03 O4 O5 O6 O7 A01 Signal cable shield screen Frequency Input 4 20mA Jumper Al1 at TOP Frequency Input Common ground PARAMETER SETTINGS Parameter Setting Parameter Description VFD using 4 20mA f i O8 A
14. alue of the analog signal from the controller when CO2 600ppm Action Level Action Level Signal Minimum Signal _ __ Measurement Range x Signal Range Therefore 600 ppm 1100 ppm Action Level Signal 4 mA x 16 mA 12 72 mA 3 The calculated ACTION LEVEL SIGNAL now needs to be expressed as a percentage of the SIGNAL RANGE but since the MINMUM SIGNAL VALUE 4 0 calculate as follows Erma 100 54 5 16 0 mA 4 Calculate the MAXIMUM RESPONSE LEVEL SIGNAL the value of the analog signal from the controller when CO2 1000ppm Maximum Response Level Maximum Response Level Signal Minimum Signal Measurement Range x Signal Range Therefore 1000 ppm Maximum Response Level Signal 4 mA lt k mA aapon x1 sma 18 54 mA 5 This calculated MAXIMUM RESPONSE LEVEL SIGNAL now needs to be expressed as a percentage of the SIGNAL RANGE but since the MINIMUM SIGNAL VALUE 4 0 calculate as follows TS Sn ee 90 9 16 0 mA 6 Set the parameters that will scale the response of the VFD to the inputs from the CO2 controller e Set Parameter 1301 MINIMUM Al 1 to 55 the MINIMUM SIGNAL VALUE e Set Parameter 1302 MAXIMUM AI 1 to 91 the MAXIMUM SIGNAL VALUE VFD Addendum Due to continuing product development specifications are subject to change without notice 2012 RenewAire LLC 138291_000 VFD_Addendum_Jan12 indd Revi
15. as possible See the ABB VFD manual for more detailed wire routing instructions Power cables and control cables can be brought into the bottom of the electrical box attached to the ERV unit or through the bottom of the unit itself There are plugged holes to run control wires and power wires between the electrical box and the unit interior marked on the interior of the ERV unit and another plugged hole in the unit compartment divider to run wires to VFDs in the other airstream compartment if needed In some configurations the VFD and or VFD protective guard may need to be removed to access the control wire hole plug to run wires A label is located in the ERV on the left interior wall indicating the power and control wire hole plug locations Bring wires out from the top or bottom of the VFD mounting bracket and not through the mounting bracket window when routing wires if the VFD is mounted over the hole plug After the wires are run apply caulk around the wires at wire bushings used between the electrical box and ERV unit and between compartments in the unit to prevent air leakage between these compartments PURPOSE OF PROVIDED KEYPAD Each VFD has a keypad which is accessible at the E box while the unit is operating You can check the status of the VFD at the keypad and make changes to the VFD parameters at the keypad You can manually control the VFD from the keypad during start up and commissioning VFD is factory programmed to
16. contact switches at terminals 13 amp 14 Do not disconnect factory wiring at Terminals 9 12 if any Install Leader Follower connection wiring if desired to operate 2nd VFD at the same speeds pis pia status PARAMETER SETTINGS o o Noconstantspeed Parameter Setting 1 o ConstantSpeed1 1202 DI 3U 4D Enables momentary contact inputs at o 1 ConstantSpeed2 1203 j 13 amp 14 to invoke preset speeds 1 1 corsa sses 1209 eer aa Speed 1 hz Setting in hz for Preset Speed 1 Speed 2 hz Setting in hz for Preset Speed 2 Speed 3 hz Setting in hz for Preset Speed 3 VFD Addendum Due to continuing product development specifications are subject to change without notice 2012 RenewAire LLC 138291_000 VFD_Addendum_Jan12 indd Revised 01 2012 www renewaire com Page 6 USE WITH A CO2 CONTROLLER The example below corresponds to the example in the section Scaling and Response to Analog Inputs The scaling parameters for the FA VFD in your application are likely to be different Fig 7 Example of Operation of 2 VFDs by a CO2 Controller SCR Signal cable shield screen Alt Frequency Input 4 20mA Frequency Input Common ground A01 O8 AGND NOTE If the ERV is equipped with dampers wiring is somewhat For 4 20mA input place AT A2 9 40141112 15 different Install jumpers at the low voltage terminal strip in the ERV Jumper Al1 at TOP o o Eb
17. cts backwards rotation 1 COAST 2 RAMP Sets motor to ramp down to a halt following the deceleration time set at 2203 0 0s 10 0s Sets deceleration time This is ignored when 2102 STOP FUNCTION COAST 3401 SIGNAL 1 PARAM 103 OUTPUT FREQUENCY 101 SPEED AND DIR Sets top line of keypad display to show motor speed in rpm 3408 SIGNAL 2 PARAM 104 CURRENT 104 CURRENT Sets middle line of keypad display to show motor current in Amps 120 Al 1 120 Al 1 Sets bottom line of keypad display to show value of analog signal input This parameter is not visible in the short view To be able to view all signals and parameters set parameter 1611 PARAMETER VIEW to 3 LONG VIEW N i N 2 203 CCELER TIME 1 ECELER TIME 1 MAXIMUM Al1 AO 1 CONTENT SEL MINIMUM AO 1 MAXIMUM AO 1 PARAMETER LOCK PARAM SAVE PARAMETER VIE MAX CURRENT MINIMUM FREQ MAXIMUM FREQ START FUNCTION STOP FUNCTION N oO N N J i n 3415 Za 9 Z gt cr w 2 ww Q oO NOTE SPEED SKIPPING is a function available through Parameters 2501 2507 It allows up to 3 critical speeds to be skipped as the VFD ramps speed up and down If noise problems occur at specific frequencies Speed Skipping may help See the VFD manual for details VFD Addendum Due to continuing product development specifications are subject to change without notice 2012 RenewAire LLC 138291_000 VFD_Addendum_Jan12 indd Revised 01 2012 www rene
18. e ERV should increase airflow hitting a maximum of 1500 CFM at 1000 ppm CO2 level The CO2 controller is set up to deliver a linear 4 20mA signal over a measurement range of 0 to 1100ppm During the test and balance process the ERV is found to deliver 700 CFM at 20Hz and 1500CFM at 50Hz This does not mean the range of values that will be measured For example a CO2 controller might be set so that it can measure from Oppm to 1100ppm The Measurement Range is therefore 0 1100ppm In the field the controller might never read a value below 400ppm or above 1000ppm but this is not the meaning of Measurement Range VFD Addendum 138291_000 VFD_Addendum_Jan12 indd Due to continuing product development specifications are subject to change without notice Revised 01 2012 2012 RenewAire LLC www renewaire com Page 10 THEREFORE ACTION LEVEL 600ppm MAXIMUM RESPONSE LEVEL 1000ppm MAXIMUM SPEED 50Hz MINIMUM SPEED 20Hz ANALOG SIGNAL TYPE mA MINIMUM SIGNAL VALUE 4mA MAXIMUM SIGNAL VALUE 20mA SIGNAL RANGE 16mA MEASUREMENT RANGE of the controller 1100ppm CALCULATIONS AND SETTING THE PARAMETERS 1 Set the VFD parameters for the minimum and maximum SPEEDS of the VFD e Set Parameter 1104 REF1 MIN to 20Hz The motors will never run below this speed e Set Parameter 1105 REF1 MAX to 50Hz The motors will never run above this speed 2 Next calculate the ACTION LEVEL SIGNAL the v
19. ftkey Press the MENU softkey Use the UP DOWN arrows to scroll the display until PARAMETERS is selected then press the ENTER softkey You will see a numbered list of Parameter groups those numbers are the first two digits of the Parameters in each group Press the SEL softkey to view all the Parameters in each Group Use the UP DOWN buttons to scroll through the parameters As each Parameter is selected its value will be displayed TO CHANGE VFD PARAMETERS Select the Parameter you want to edit see above Press the EDIT softkey Use the UP DOWN arrows to scroll through the available settings for that Parameter Press the SAVE softkey to set the Parameter to the selected value TO VIEW ONLY CHANGED VFD PARAMETERS If EXIT is displayed above the left softkey press softkey repeatedly until MENU appears above the right softkey Press the MENU softkey Use the UP DOWN arrows to scroll the display until CHANGED PAR is selected then press the ENTER softkey All Parameters that have been changed from the HVAC Application Macro default values are displayed Use the UP DOWN buttons to view them all VFD Addendum Due to continuing product development specifications are subject to change without notice 138291_000 VFD_Addendum_Jan12 indd Revised 01 2012 www renewaire com 2012 RenewAire LLC Page 8 SUMMARY TABLE OF COMMONLY USED PARAMETERS Note Parameters not listed in this Table are shipped in ABB
20. indicated on the unit s nameplate NOTE VFD s in this unit can be operated in many ways This Manual provides only an outline of common methods HOW TO USE THIS MANUAL IN THIS MANUAL YOU WILL FIND e Orientation basic concepts including ON and SPEED signals Parameters and Keypad e Simple Startup how to make the unit run temporarily for testing and start up e Control Connections examples of control system wiring connections to the ERV and the VFD s e VFD Parameters information about the most commonly used Parameters e Scaling and Response to Analog Inputs step by step approach to scaling VFD speed so that it responds correctly to an analog input from the external control system FOR COMPLETE ERV INSTALLATION YOU WILL ALSO NEED e Standard Installation and Operation Manual for the ERV physical installation and duct connection maintenance procedures etc e Supplemental Wiring Schematic Manual complete unit wiring diagrams e Short Form User s Manual ACS320 ABB s user s installer s manual More detailed information is available online in the Document Library at www abb com drives A WARNING DO NOT OPERATE VFD IN CONDITIONS OUTSIDE OF TEMPERATURE LIMITS The manufacturer s ambient temperature limits for the VFDs are 14 to 122 F It is not recommended that the VFDs be used under conditions above or below these temperature limits Operate outdoor ERV units continuously if outdoor design
21. itches between 9 amp 13 and 9 amp 14 0 Hz ONST SPEED 2 2 0 Hz 45 0 Hz Determines preset speed 2 ONST SPEED 3 8 0 Hz 60 0 Hz Determines preset speed 3 2 INIMUM Al1 20 h Sets minimum value for analog input Used for scaling and offsetting the input to the VFD output 100 100 Sets maximum value for analog input Used for scaling and offsetting the input to the VFD output 1 READY 2 RUN Energizes Relay 1 when drive is running Terminal 17 COM 18 N C 19 N O 103 OUTPUT FREQ 103 OUTPUT FREQ Sets the Analog Output of the VFD equal to the Output Frequency at which it is driving its Motor 0 0 Hz Scales the minimum value of the analog output with respect to the VFDs Output Frequency 60 0 Hz Scales the maximum value of the analog output with respect to the VFDs Output Frequency 0 0 mA OPEN 1 OPEN DONE D14 1 D HORT VIEW 1 12N Set to match motor FLA 0 Hz 0 0 Hz 1201 CONST SPEED SEL w 2 w J w aN 1202 CONST SPEED 1 oO N oO w 1204 1301 Q D 1302 RELAY OUTPUT 1 a O Z 4 m Zz l Z oO T a O Z 4 m rA a oO o sia 0 0 02 1607 608 1 003 007 008 101 Oo Dje 3 gt R N uo uo fon Sa uo uo uo A oO O oO A w N o ul nr iw TART ENABLE 1 W ss ed oa jl N AUTO 6 SCAN START Selects the motor start method SCAN START provides a frequency scanning flying start and corre
22. ox between terminals 1 amp 4 and 4 amp 5 for constant operation rather than o D j at 9812 on the VFDs Install jumper between 9 amp 12 for constant operation 24VAC IN 1 Signal cable shield screen O2 Frequency Input 4 20mA 2 1 L I Frequency Input Common ground PARAMETER SETTINGS BOTH VFDs Parameter Setting Parameter Description Enables Frequency to be controlled by 1103 1 Al1 analog input signal from external control A01 3416 20 Properly scales display of input AGND CO2 CONTROLLER For 4 20mA input place ait Al2 9 10 11 12 15 3419 mA Sets display units as mAmps Jumper Altat TOP I s 9 9 o 3420 4mA Properly scales display of input 2 VU 3421 20mA Properly scales display of input Install jumper between 9 amp 12 for PARAMETER SETTINGS FA VFD constant operation 1104 20Hz Sets Minimum Speed of VFD 24VAC power available here On board 24VAC Power 1105 50 Hz Sets Maximum Speed of VFD Scales the response of the VFD to 1301 55 the CO2 Controller Output Scales the response of the VFD to the CO2 Controller Output 1302 91 If both VFDs are to run at the same speed no scaling parameters need be applied to the EA VFD in this example since it is controlled as a Follower If it is desired that the VFDs should shut
23. sed 01 2012 www renewaire com Page 11 TECHNICAL SUPPORT For questions about applications not covered in this manual and for questions specific to the ABB Drives contact ABB Technical Support at 800 HELP 365 800 435 7365 A listing of ABB support and service contacts can be found on the Internet at www abb com drives and selecting Sales Support and Service Network ABB manuals are available as pdfs at www abb com drives select Document Library ABB offers training courses on their VFDs navigate to www abb com drives and select Training Courses For questions about applications covered in this manual and for questions about how the VFDs are installed in your RenewAire ERV unit contact RenewAire Customer Support at 800 627 4499 VFD Addendum Due to continuing product development specifications are subject to change without notice 2012 RenewAire LLC 138291_000 VFD_Addendum_Jan12 indd Revised 01 2012 www renewaire com Page 12
24. vided by the VFD SCALING AND RESPONSE TO ANALOG INPUTS The most likely reason to control the VFD from an analog signal is to automatically change the amount of outside air ventilation to meet the actual needs for each time period If one or both of the VFDs will be controlled by an analog input from an external Control Device e g a CO2 controller or a Building Management System you may need to scale the rate of response of the VFD s to the rate of change of the analog signal We need to introduce two concepts relating to the amount of outside air ventilation needed in the building e The ACTION LEVEL is the level of measurement of indoor air quality or occupancy at which the ERV should start to deliver more than the Design Minimum Supply Airflow e The MAXIMUM RESPONSE LEVEL is the level of measurement of indoor air quality or occupancy at which the ERV should be operating at the Design Maximum Supply Airflow Fig 8 Schematic Relationship between Measurement by a Controller the Analog Signal from the Controller the VFD Scaling Parameters and the Motor Speed VFD Operating Frequencies VFD SCALING PARAMETERS VFD OPERATING FREQUENCIES hz 1105 REF1 MAX 1104 REF1 MIN 1301 MINIMUM Al1 in this example 55 1302 MAXIMUM Al1 in this example 91 ANALOG SIGNAL FROM dc 10vdc CONTROLLER 4mA 20mA 4 LL ACT
25. waire com Page 9 TO LOCK OR UNLOCK PARAMETERS To lock all Parameters 1 Select Parameter 1603 PASS CODE press EDIT softkey 2 Use the UP DOWN buttons to scroll to 358 press SAVE softkey press EXIT softkey 3 Scroll up to Parameter 1602 PARAMETER LOCK press EDIT softkey 4 Scroll to LOCKED press SAVE softkey press EXIT softkey Parameters are now locked You can view them but you cannot change them To unlock all Parameters Repeat steps 1 3 above 5 Scroll to OPEN press SAVE softkey press EXIT softkey Parameters are now unlocked You can view and change them TO RESET VFD PARAMETERS TO FACTORY SETTINGS USING KEYPAD To return to RenewAire s defaults select parameter 9902 APPLIC MACRO and press the EDIT softkey Scroll up or down to select USER 1 LOAD Press the SAVE softkey To return to ABB s defaults select parameter 9902 APPLIC MACRO and press the EDIT softkey Scroll up or down to select HVAC DEFAULT Press the SAVE softkey NOTE VFD Manufacturer instructions list many other parameters Copies of the complete manufacturer s instructions for the VFD are shipped with this unit and are also available on line in the Document Library at www abb com drives A WARNING DANGER OF MOTOR OVERLOAD LEADING TO SMOKE AND FIRE Do not change PARAMETER 2003 MAX CURRENT from RenewAire default setting which should be equal to the motor nameplate FLA This parameter controls the Motor OVERLOAD PROTECTION pro
26. wer available here onb ard AVAE Bowe PARAMETER SETTINGS Parameter Setting Parameter Description Close contact to turn Blower ON Make no connections to Terminals 3 5 Enables Frequency to be controlled by 1103 1 Al1 analog input signal from external control VFD Addendum Due to continuing product development specifications are subject to change without notice 2012 RenewAire LLC 138291_000 VFD_Addendum_Jan12 indd Revised 01 2012 www renewaire com Page 4 Fig 3 ERVs with 2 VFDs and NO Dampers only ON Signal connected directly to one VFD passed to second VFD from terminals 17 amp 19 O1 SCR O2 An SPEED input wiring connections not shown O3 AGND O4 10v O5 a O6 AGND O7 A01 O8 AGND Close contact to turn FA 9 10 11 12 Blower ON bid F O U J Install these wires FA VFD will turn EA Blower ON C O1 O2 SPEED input wiring connections not shown O3 O4 O5 DO NOT CONNECT POWER O6 TO TERMINALS 9 15 ON O7 aot EITHER VFD O8 AGND 9 10 11 12 PARAMETER SETTINGS FA VFD Parameter Setting Parameter Description 7 Closes contact between 17 amp 19 when 24VAC Pi Availabl z C Fower Available On board 24VAC Power 1401 2 RUN VFD is called to RUN PARAMETER SETTINGS BOTH VFDS Enables Frequency to be controlled by 1 Al1 analog input signal from external control ANALOG INPUTS TO PROVID
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