Carrier CRLOWAMB030A00 Low Ambient Operation Motormaster V Control Accessory Select Rooftop Units Instruction Manual

Carrier CRLOWAMB030A00 Low Ambient Operation Motormaster V Control

Accessory Select Rooftop Units

Product Information

The product is a Motormaster V (MMV) control that is used for the installation, start-up and service of various units such as 48/50TCD14, 558/580J14D, RGS150, RAS150, 48/50HCD12, 551/581J12, RGH120, RAH120, 50TCQD12, 50HCQD09, 548J12, 549J09, RHS120, and RHH102. It operates on a voltage range of 208/230-3-60,
460-3-60, 400-3-50, and 575-3-60 Hz. The package contains additional parts for heat pump units including an adapter kit (CRLOAMHP001A00) and a Motormaster V/fuse sub-assembly (CRLOWAMB030A00).

Product Usage Instructions

Installation of this accessory should only be done by trained and qualified installers and service technicians due to the hazardous nature of the equipment. Before servicing the equipment, all remote disconnects should be opened to avoid electrical shock hazards. When removing access panels or performing maintenance functions inside the unit, be aware of sharp sheet metal parts and screws to avoid cut hazards.

PACKAGE USAGE
Table 1 — Motormaster® V Control Package Usage

*48/50TCD14**

*558/580J14D**

50TCQD12

*548J12**

| 208/230-3-60| CRLOWAMB030A00
460-3-60

400-3-50

| CRLOWAMB031A00
575-3-60| CRLOWAMB032A00
50HCQD09

*549J09**

*48/50HCD12**

*551J/581J12**

| 208/230-3-60| CRLOWAMB030A00
460-3-60| CRLOWAMB031A00
575-3-60| CRLOWAMB032A00

RGS150 RAS150 RHS120

| 208/230-3-60| CRLOWAMB030A00
460-3-60

400-3-50

| CRLOWAMB031A00
575-3-60| CRLOWAMB032A00
RHH102 RGH120 RAH120| 208/230-3-60| CRLOWAMB030A00
460-3-60| CRLOWAMB031A00

PACKAGE CONTENTS (ADDITIONAL PARTS FOR HEAT PUMP UNITS)
Table 2 — Heat Pump Adapter Kit (CRLOAMHP001A00)

Table 3 — Motormaster V/Fuse Sub-Assembly (CRLOWAMB030A00)

Table 4 — Motormaster V/ Fuse Sub-Assembly (CRLOWAMB031A00)

Table 5 — Motormaster V/ Fuse Sub-Assembly (CRLOWAMB032A00)

Pre-Installation

Before installation, ensure that all necessary parts are available and that the equipment is suitable for use with the Motormaster V control. Refer to the user manual for a complete list of compatible units.

Pre-Installation
Inspect the contents of this accessory package before installing it. File a claim with the shipper if there is shipping damage or if a part is missing.
Table 6 — Applicable Voltages and Motors

Table 6 — Applicable Voltages and Motors

HD52AK002

460-3-60
400-3-50
575-3-60| HD52GE577

Installation

1. Install Field-Fabricated Wind Baffles.
2. Mount and make electrical connections for the EPM Chip.
3. Install the Motormaster V/fuse sub-assembly (CRLOWAMB030A00) using the included parts such as the controller, fuse, fuse block, relay base, relay fuse cover, wire ties, screws, harness bracket, MM covers, transducer, transducer cable, check valve tees, wire tie, screws, diagram label and caution label.
4. Install the adapter kit (CRLOAMHP001A00) for Heat Pump units using the included parts such as HN61KK055, HN79KK035, HT21AZ110, AL56AU126, HY76TB035 and 48TM504591.

ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Open all remote disconnects before servicing this equipment.

In areas with prevailing winds of more than 5 mph (8 km/h) and where temperatures drop below 32°F (0°C), wind baffles must be field fabricated to ensure proper cooling cycle operation at low-ambient temperatures with Motormaster V controls. See Fig. 2 and Tables 7-8 for baffle details and dimensions. Use 20-gauge (1 mm) galvanized sheet metal, or similar corrosion- resistant ma-terial for the baffles. Use field-supplied screws to attach baffles to unit. Screws should be 1/4 in. (6.3 mm) diameter or larger. Screws should not be more than 1/2 in. (12.7 mm) in length. Drill required screw holes for mounting baffles.

CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in damage to unit.
To avoid damage to refrigerant coils, electrical components and wiring, use extreme care when drilling screw holes and screwing in fasteners.

BACK BAFFLE – INCHES (mm)

UNIT| SIZE| A| B| C| D| E| F| G| H| J| K
---|---|---|---|---|---|---|---|---|---|---|---
50HCQD| 09|  |  |  |  |  |  |  |  |  |
549J|  |  |  |  |  |  |  |  |  |
48/50HCD|  |  |  |  |  |  |  |  |  |  |
50TCQD

551J/581J

| 12| 41-7/8 (1063.6)| 42-1/2 (1079.5)| 43-1/8 (1095.4)| 43-1/2 (1104.9)| 1-1/4 (31.8)| 9-1/4 (235)| 17-1/4 (438.2)| 25-1/4 (641.4)| 33-1/4 (844.6)| 41-1/4 (1047.6)
548J|  |  |  |  |  |  |  |  |  |  |
48/50TCD| 14|  |  |  |  |  |  |  |  |  |
558/580J|  |  |  |  |  |  |  |  |  |
RHH| 102|  |  |  |  |  |  |  |  |  |

RGH/RAH/RHS

| ****

120

| ****

41-7/8

| ****

42-1/2

| ****

43-1/8

| ****

43-1/2

| ****

1-1/4

| ****

9-1/4

| ****

17-1/4

| ****

25-1/4

| ****

33-1/4

| ****

41-1/4

 |  | (1063.6)| (1079.5)| (1095.4)| (1104.9)| (31.8)| (235)| (438.2)| (641.4)| (844.6)| (1047.6)
RGS/RAS| 150|  |  |  |  |  |  |  |  |  |

LEFT BAFFLE – INCHES (mm)

UNIT| SIZE| A| B| C| D| E| F| G| H| J| K
---|---|---|---|---|---|---|---|---|---|---|---
50HCQD

549J

| 09| ****

42-3/4 (1085.9)

| ****

43-3/8 (1101.7)

| ****

44

(1117.6)

| ****

43-1/2 (1104.9)

| ****

1-1/4 (31.8)

| ****

9-1/4 (235

| ****

17-1/4 (438.2)

| ****

25-1/4 (641.4)

| ****

33-1/4 (844.6)

| ****

41-1/4 (1047.6)

48/50HCD

50TCQD

551J/581J

548J

| ****

12

48/50TCD

558/580J

| 14
RHH| 102| ****

42-3/4 (1085.9)

| ****

43-3/8 (1101.7)

| ****

44

(1117.6)

| ****

43-1/2 (1104.9)

| ****

1-1/4 (31.8)

| ****

9-1/4 (235)

| ****

17-1/4 (438.2)

| ****

25-1/4 (641.4)

| ****

33-1/4 (844.6)

| ****

41-1/4 (1047.6)

RGH/RAH/ RHS

| ****

120

RGS/RAS| 150

Table 8 — Dimensions for Novation® Coils
BACK BAFFLE – INCHES (mm)

UNIT| SIZE| A| B| C| D| E| F| G| H| J| K
---|---|---|---|---|---|---|---|---|---|---|---
48/50TCD

558/580J

| 14| 40-1/4

(1022.3)

| 40-7/8

(1038.2)

| 41-1/2

(1054.1)

| 43-1/2

(1104.9)

| 4-1/4

(108)

| 11-1/4

(285.8)

| 18-1/4

(463.6)

| 25-1/4

(641.4)

| 32-1/4

(819.2)

| 39-3/16

(995.4)

LEFT BAFFLE – INCHES (mm)

UNIT| SIZE| A| B| C| D| E| F| G| H| J| K
---|---|---|---|---|---|---|---|---|---|---|---
48/50TCD

558/580J

| 14| 47-3/4 (1212.8)| 48-1/4 (1225.5)| 48-7/8 (1241.4)| 43-1/2 (1104.9)| 1-1/4 (31.8)| 9-1/4 (235)| 17-1/4 (438.2)| 25-1/4 (641.4)| 33-1/4 (844.6)| 41-1/4 (1047.6)

Step 2 — Mounting and Electrical Connections for Motormaster® V Control

WARNING

• ELECTRICAL SHOCK HAZARD
  Failure to follow this warning could result in personal injury or death.
  Open all remote disconnects before servicing this equipment.

• ELECTRICAL OPERATION HAZARD
  Failure to follow this warning could result in personal injury and/or death.
  Wait three minutes after disconnecting incoming power before servicing drive. Capacitors retain charge after power is removed.efore servicing this equipment.

CAUTION

• EQUIPMENT DAMAGE HAZARD
  Failure to follow this caution may result in personal injury and damage to equipment.
  To avoid damage to the small terminals on the Motormaster V control, use care when tightening the compression terminals and use the proper size screwdriver.

• EQUIPMENT DAMAGE HAZARD
  Failure to follow this caution may result in personal injury and damage to equipment.
  DO NOT connect incoming AC power to Motormaster V output terminals T1, T2 and T3. Severe damage to the control will result.

COOLING ONLY
For 48/50TCD14, 558/580J14D, and RGS/RAS150, use the following procedure to mount and connect the MMV control to the unit.

1. Disconnect power to the unit. Lockout and tag power disconnect.

2. Remove the compressor access panel, control box cover and indoor blower panel. Lifting the top cover on the control box side of unit will aid the routing of wiring from the blower section to the control box.

3. Mount the MMV assembly on the tube sheet of the indoor coil using the #10 screws, align the bracket slot with tube sheet holes then mount the left tab of the bracket into fan housing bracket into fan housing bracket re-using screws from side bracket.(See Fig. 3.) Verify that the fuses match those specified in the packaging list.
   IMPORTANT: Do not drive screws into the control box area.

4. Disconnect the OFM wires from the OFC-21 and OFC-23 and IFC-13 or TB10 and save. Remove the two jumper wires between OFC and C2 and discard. Remove the 24-v control wires from OFC and save. Remove and discard OFC.

5. Route all wires connected to MMV sub-assembly following the economizer harness then through the bulkhead. Route the transducer harness cable separately from the rest to avoid electri-cal interference.
   The following wiring refers to Fig.4 (wiring diagram) and Fig. 5 (wire harness).

6. Connect violet and brown control wires that were connected to OFC to the violet and brown wires from FR13 and 14. Match the colors.

   • a. Connect BLK 1, YEL 2 and BLU 3 coming from MMV control T1, T2 and T3 to the BLK, YEL and BLU OFM wires previously disconnected. Match the colors.
   • b. Connect BLK 6, YEL 7, and BLU 8 coming from fuse block to C2-11, C2-13 and IFC-13 or TB10 for 208/230 units with electric heaters installed.
   • c. Connect the GRN/YEL ground wire to the ground screw in the control box used to ground the outdoor fan motor.
   • d. For 400-3-50 units, move the orange control wire from TB-1 to TB-13C on the MMV as indicated in Fig. 4.

7. Remove the cap from the discharge line service port of Circuit 1 and connect the check valve tee (EC36SZ061) to the port.
   WARNING PERSONAL INJURY HAZARD
   Failure to follow this warning could result in personal injury or death.
   Orient the valve so that the ports are directed away from the access panel.

8. Attach service port cap to check valve tee.

9. Connect transducer HK05ZZ001 to check valve tee.

10. Connect the transducer harness cable to transducer.

11. Bundle any excess wire and dress harnesses with wire ties.

12. Place the appropriate wiring label on the control box cover.

13. Reattach control box cover, compressor access panel and indoor blower panel.

14. Place the caution label on the top cover above the control box near the outdoor fan grill.

HEAT PUMP ONLY
For 50TCQD12, 50HCQD09, 548J12, 549J09, RHS120, and RHH102, use the following procedure to mount and connect the MMV control to the unit. (See Fig. 7.)

1. Disconnect power to the unit. Lockout and tag power disconnect.

2. Remove the compressor access panel, control box cover and indoor blower panel. Lifting the top cover on the control box side of unit will aid routing of wiring from the blower section to the control box.

3. Locate the heat pump adapter kit and mount the relay (FR- H) to the MMV bracket using the (2) *8 screws provided.

4. Connect the blue, white and yellow wires to the MMV as shown – terminals 5, 6 and 2 respectively. The orange and brown wires will go into the control box along with the wires from the other fan relay (FR).
   NOTE: If the transducer harness is connected to the MMV at the 2, 5, 6 terminals, disconnect and reconnect per item 6 below.
   NOTE: On the MMV there are three #2 positions in the terminal block, these are connected internally.

5. Use the wire tires to secure the FR-H wiring to existing wires. Connect the transducer harness to the FR-H as shown – green to #9, red to #10 and black to #11. This may need to be done prior to installing the MMV into the unit since there may be limited access to the relay terminals.

6. Mount the MMV assembly on the tube sheet of indoor coil using the #10 screws, align the bracket slot with tube sheet holes then mount the left tab of the bracket into fan housing bracket re-using screws from side bracket. (See Fig. 3.) Verify that fuses match those specified in the packaging list.
   IMPORTANT: Do not drive screws into the control box area.

7. Disconnect the OFM wires from the OFC-21 and OFC-23 and IFC-13 or TB10 and save. Remove the two jumper wires between OFC and C2 and discard. Remove the 24-v control wires from OFC and save. Remove and discard OFC.

8. Route all wires connected to MMV sub-assembly follow the economizer harness then through the bulkhead. Route the transducer harness cable separately from the rest to avoid electri-cal interference.
   The following wiring refers to Fig. 6 (wiring diagram) and Fig. 7 (second relay).

9. Connect violet and brown control wires that were connected to OFC to the violet and brown wires from FR13 and 14. Match the colors.

   • a. Connect BLK 1, YEL 2 and BLU 3 coming from MMV control T1, T2 and T3 to the BLK, YEL and BLU OFM wires previously disconnected. Match the colors.
   • b. Connect BLK 6, YEL 7, and BLU 8 coming from fuse block to C2-11, C2-13 and IFC- 13 or TB10 for 208/230 units with electric heaters installed.
   • c. Connect the GRN/YEL ground wire to the ground screw in the control box used to ground the outdoor fan motor.
   • d. For 400-3-50 units, move the orange control wire from TB-1 to TB-13C on the MMV as indicated in Fig. 6.

10. Orange wire (FR- H) to LCTB “W1”.

11. Brown wire (FR- H) to LCTB “C” 24-v common.

12. Remove the cap from the discharge line service port of Circuit 1 and connect the check valve tee (EC36SZ061) to the port.
    WARNING PERSONAL INJURY HAZARD
    Failure to follow this warning could result in personal injury or death.
    Orient the valve so that the ports are directed away from the access panel.

13. Attach service port cap to check valve tee.

14. Connect transducer HK05ZZ001 to check valve tee.

15. Connect transducer harness cable to the transducer.

16. Bundle any excess wire and dress harnesses with wire ties.

17. Place the appropriate wiring label on the control box cover.

18. Reattach control box cover, compressor access panel and indoor blower panel.

19. Place the caution label on the top cover above the control box near the outdoor fan grill.

Step 3 — Configure Motormaster® V Control
The Motormaster V control is configured for an operation mode of internal PI (pressure independent) control and 0 to 5-v feedback by installing the start contactor according to Table 9. No addition-al programming is required. NOTE: The pressure transducer must be attached for proper configuration.

Table 9 — Configuration Table

NOMINAL VOLTAGE (V-Ph-Hz)| ****

MODE

| CONTROL INPUT

(Pin 5)

| START CONTACT
---|---|---|---
230-3-60

460-3-60

575-3-60

| ****

1

| Internal PI control, 0 to 5-v feedback| ****

TB1-TB2

400-3-50| 4| Internal PI control, 0 to 5-v feedback| TB13C-TB2

Step 4 — Test Motormaster V Control
To test the control and motor in the test mode, run compressor no. 1. The Motormaster V electronic control adjusts the fan speed based on the discharge pressure input. Ensure that fans are rotating clockwise (as viewed from above). If rotation is backward, lock out all power then swap 2 leads AFTER the Motormaster V control.

START-UP

The Motormaster V electronic control will be powered up as long as unit voltage is present. When the system calls for cooling, the fan relay will be energized to initiate the start-up sequence for the Motormaster V electronic control. The LED (light-emitting diode) will display the speed of the motor. The display range will be 8 to 60 Hz. The Motormaster V electronic control will start the condenser fan when the compressor engages. The control will adjust the fan speed to maintain approximately 200 psig discharge pressure. Above that pressure, the fan should operate at full speed.
The Motormaster V control uses a 0 to 5 vdc signal input from a pressure transducer attached to the liquid line service valve gauge port on circuit A. The pressure transducer is connected to terminals 2, 5 and 6 on the controller. The controller is configured by jumper wires and sensor input types. No field programming is required. If the controller does not function properly, the information provided below can be used to program and troubleshoot the drive.

Drive Programming
Table 10 shows all program parameters for each of the operating modes. Refer to the Troubleshooting section before attempting to change programming in the Motormaster V control.

CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in personal injury and damage to equipment.
It is strongly recommended that the user NOT change any programming without consulting service personnel. Unit damage may occur from improper programming.

TO ENTER THE PASSWORD AND CHANGE PROGRAM VALUES:

1. Press MODE.

2. The display will read “00” and the upper right-hand decimal point will be blinking. This will activate the PASSWORD prompt (if the password has not been disabled).

3. Use the UP and DOWN buttons to scroll to the password value (the factory default password is “111”) and press the MODE button. Once the correct password value is entered, the display will read “P01”, which indicates that the PROGRAM mode has been accessed at the beginning of the parameter menu (P01 is the first parameter).
   NOTE: If the display flashes “Er”, the password was incorrect and the process to enter the password must be repeated.

4. Press MODE to display present parameter setting. The upper right decimal point blinks. Use UP and DOWN buttons to scroll to the desired parameter number.

5. Once the desired parameter number is found, press the MODE button to display the present parameter setting. The upper right- hand decimal point will begin blinking, indicating that the present parameter setting is being displayed. Use the UP and DOWN buttons to change setting. Press MODE to store new setting.

6. Press MODE to store the new setting and also exit the PROGRAM mode. To change another parameter, press the MODE button again to re-enter the PROGRAM mode (the parameter menu will be accessed at the parameter that was last viewed or changed before exiting). If the MODE button is pressed within two minutes of exiting the PROGRAM mode, the password is not required to access the parameters.

7. After two minutes, the password must be entered in order to access the parameters again.

TO CHANGE PASSWORD
Enter the current password, then change P44 to the desired password.

TO RESET FACTORY DEFAULTS
To recognize a factory reset, the MMV controller must see a change in P48.

1. Cycle power from Motormaster V control.
2. Enter PROGRAM mode by entering a password.
3. Scroll to P48 by using UP and DOWN buttons and then press MODE. One of the 12 mode numbers will appear. (Modes 1, 2 and 4 are used for these units.)
4. Restore factory defaults by changing the value in P48 using UP and DOWN buttons and then storing the value by pressing MODE.
5. Press MODE again to re-display the value of P48.
6. Change the value of P48 to the desired factory default mode using UP and DOWN buttons then press MODE. (See Table 10.) The Motormaster V control is now restored to factory settings.

24.0
P35| Preset spd 5 default – setpoint. TB12-2 closed (no change required)| 12.6| 12.6| 12.6
P36| Preset spd 6 default| 0| 0| 0
P37| Preset spd 7 default| 0| 0| 0
P38| Skip bandwidth| 0| 0| 0
P39| Speed scaling| 0| 0| 0
P40| Frequency scaling 50 or 60 Hz| 60| 60| 50
P41| Load scaling: default (not used so NA)| 200| 200| 200
P42| Accel/decel #2: default (not used so NA)| 60| 60| 60
P43| Serial address| 1| 1| 1
P44| Password:111| 111| 111| 111
P45| Speed at min signal: 8 Hz; used when PID mode is disabled and 4–20 mA input is at 4 mA| 8| 8| 8
P46| Speed at max feedback: 60 or 50 Hz. Used when PID disabled and 4–20 mA input is at 20 mA| 60| 60| 50
P47| Clear history? 01 = maintain. (set to 02 to clear)| 01| 01| 01
P48| Program selection: Program 1 – 12| 01| 02| 04
P61| PI Mode: 05= reverse, 0–5V, 01= no PID| 05| 05| 05
P62| Min feedback = 0 (0V 10)| 0| 0| 0
P63| Max feedback = 50 (5V 10)| 50| 50| 50
P64| Proportional gain = 3.5%| 3.5| 3.5| 3.5
P65| Integral gain = 2| .2| .2| .2
P66| PI accel/decel (setpoint change filter) = 10| 10| 10| 10
P67| Min alarm| 0| 0| 0
P68| Max alarm| 0| 0| 0

LEGEND
NA — Not Applicable
PI — Proportional Integral
PID — Proportional Integral Derivative

TROUBLESHOOTING

Troubleshooting the Motormaster® V control requires a combination of observing system operation and VFD (variable frequency drive) display information. If the discharge line pressure is above the set point and the VFD is running at full speed, this is a normal condition. The fan CANNOT go any faster to maintain set point.
If the VFD is not slowing down even though discharge pressure is below set point, the VFD could be set for manual control or the control may be receiving faulty pressure transducer output. Corrective action would include:

• Check that VDC signal between TB5 and TB2 is between 0.5-v and 4.5-v.
• Restore VFD to automatic control.
• Change parameter P05 back to correct value shown in Table 10.

The MMV control also provides real time monitoring of key inputs and outputs. The collective group is displayed through parameters P50 to P56 and all values are read only. These values can be accessed without entering a password.
Press MODE twice and P50 will appear.
Press MODE again to display value.
To scroll to P51- P56 from P50, use UP and DOWN buttons, then press MODE to display the value.

• P50: FAULT HISTORY — Last 8 faults
• P51: SOFTWARE version
• P52: DC BUS VOLTAGE — in percent of nominal. Usually rated input voltage x 1.4
• P53: MOTOR VOLTAGE — in percent of rated output voltage
• P54: LOAD — in percent of drives rated output current
• P55: VDC INPUT — in percent of maximum input: 100% will indicate full scale which is 5-v
• P56: 4- 20 mA INPUT — in percent of maximum input. 20% = 4 mA, 100% = 20 mA
  NOTE: The Motormaster V transducer is attached to circuit A. If circuit A compressor power is interrupted (overload, high-pressure cutout, etc.) the outdoor fans will operate at a reduced speed resulting from erroneous low- pressure readings. This process may cause a high-pressure safety cut-out on circuit B compressor. If only circuit B is capable of operating for a temporary period of time because of a circuit A problem, the transducer will have to be moved to the circuit B service port until circuit A can be repaired. Once the problem is repaired, move the transducer back to circuit A for proper unit operation.
  Fault Lockout
  If a fault lockout (LC) has occurred, view the fault history in P50 to find the last fault. Once P50 is displayed, use the arrow buttons to scroll through the last 8 faults. Any current faults or fault codes from the fault history can be analyzed using Table 11.

TO DISABLE AUTOMATIC CONTROL MODE AND ENTER MANUAL SPEED CONTROL:

1. Change P05 to’01- keypad’.
2. Push UP and DOWN arrow button to set manual speed.
3. Set P05 to proper value to restore automatic control according to Table 10.

To Provide Manual Start/Stop Control
With power removed from VFD, remove start command jumper and install a switch between the appropriate start terminals as required in Table 6.
EPM Chip
The drive uses an electronic programming module (EPM) chip to store the program parameters. This is an EEPROM memory chip and is accessible from the front of the VFD. It should not be removed with power applied to the VFD.

Loss of CCN Communications
Carrier Comfort Network® (CCN) communications with external control systems can be affected by high-frequency electrical noise generated by the Motormaster V control. Ensure unit is well grounded to eliminate ground currents along communication lines.
If communications are lost only while Motormaster V control is in operation, order a signal isolator (CEAS420876-2) and power supplies (CEAS221045-01, 2 required) for the CCN communica-tion line.

Table 11 — Fault Codes
The drive is programmed to automatically restart after a fault and will attempt to restart three times after a fault (the drive will not restart after CF, cF, GF, F1, F2- F9, or Fo faults). If all three restart attempts are unsuccessful, the drive will trip into FAULT LOCKOUT (LC), which requires a manual reset.

CODE| DESCRIPTION| RESET METHOD| PROBABLE CAUSE| CORRECTIVE ACTION
---|---|---|---|---
AF| High Temperature Fault| Automatic| Ambient temperature is too high; cooling fan has failed (if equipped)| Check cooling fan operation.

CF

|

Control Fault

|

Manual

| A blank EPM or an EPM with corrupted data has been installed| Perform a factory reset using Parameter 48 – PROGRAM SELECTION. See Drive

Programming section.

cF

|

Incompatibility Fault

|

Manual

|

An EPM with an incompatible parameter version has been installed

| Either remove the EPM or perform a factory reset (Parameter 48) to change the parameter version of the EPM to match the parameter version of the drive.
F1| EPM Fault| Manual| The EPM is missing or damaged| Install EPM or replace with new EPM.
F2 – F9

Fo

| Internal Faults| Manual| The control board has sensed a problem| Consult factory.

GF

|

Data Fault

|

Manual

|

User data and Carrier defaults in the EPM are corrupted.

| Restore factory defaults by toggling P48 to another mode. Then set P48 to desired mode to restore all defaults for that mode. See Drive Programming section. If that does not work, replace EPM.
HF| High DC Bus Voltage Fault| Automatic| Line voltage is too high; deceleration rate is too fast; overhauling load.| Check line voltage – set P01 appropriately.

JF

|

Serial Fault

|

Automatic

| The watchdog timer has timed out, indicating that the serial link has been lost.| Check serial connection (computer). Check settings for P15. Check settings in communication software to match P15.
LF| Low DC Bus Voltage Fault| Automatic| Line voltage is too low| Check line voltage – set P01 appropriately.

OF

|

Output Transistor Fault

|

Automatic

| Phase to phase or phase to ground short circuit on the output; failed output transistor; boost settings are too high; acceleration rate is too fast.|

Reduce boost or increase acceleration values. If unsuccessful, replace drive

PF

|

Current Overload Fault

|

Automatic

| VFD is undersized for the application; mechanical problem with the driven equipment.| Check line voltage – set P01 appropriately. Check for dirty coils. Check for motor bearing failure.
SF| Single — Phase Fault| Automatic| Single-phase input power has been applied to a three-phase drive.| Check input power phasing.
Drive displays

‘ – – ‘ even though drive should be running

|

Start Contact is Not Closed

|

Automatic

|

Start contact is missing or not functioning.

|

Check fan relay.

VFD flashes ” – – ” and LCS| Start Contact is Not Closed| Automatic| Start contact not closed.| Check FR for closed contact.

VFD flashes 57 (or 47) and LCS

|

Speed Signal Lost

|

Automatic

| Speed signal lost. Drive will operate at 57 (or 47) Hz until reset or loss of start command. Resetting requires cycling start command (or power).| Transducer signal lost. Check VDC signal between TB5 and TB2. Should be in range of 0.5-v to 4.5-v. 5VDC output should be present between TB6 and TB2.

LEGEND
EPM — Electronic Programming Module FR — Fan Relay
LCS — Loss of Control Signal
TB — Terminal Block
VFD — Variable Frequency Drive

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