Carrier VFD Quick Reference
Instruction Manual D2-3466-2
ATTENTION:When the level-sense start feature is enabled (P.054 = ON), the user must ensure
that automatic start up of the driven equipment will not cause injury to operating personnel or
damage to the driven equipment. In addition, the user is responsible for providing suitable audible
or visual alarms or other devices to indicate that this function is enabled and the drive may start
at any moment. Refer to the LiquiFlo Software Start-Up and Reference manual (D2-3410)for
additional information. Failure to observe this precaution could result in severe bodily injury or
loss of life.
!
ATTENTION:When P.055 is set to ON, the STOP/RESET key is functional only from the selected
control source. As a safety precaution, Reliance recommends that an emergency stop input be
located near the equipment. As a further safety precaution, the user should post a warning on
the drive to alert personnel that the STOP/RESET key is not functional. Failure to observe this
precaution could result in severe bodily injury or loss of life.
ATTENTION: Unused wires in conduit must be grounded at both ends to avoid a possible shock
hazard caused by induced voltages. Also, if a drive sharing a conduit is being serviced or installed,
all drives using this conduit should be disabled to eliminate the possible shock hazard from cross-
coupled motor leads. Failure to observe these precautions could result in bodily injury.
ATTENTION:The drive contains printed circuit boards that are static-sensitive. Anyone who
touches the drive components should wear an anti-static wrist band. Erratic machine operation
and damage to, or destruction of, equipment can result if this procedure is not followed. Failure
to observe this precaution can result in bodily injury.
ATTENTION:If a maintained start contact is used when the control source = rE, switching from
local to remote from the terminal strip will cause power to be applied to the motor if the remote
start contact is closed. Stay clear of rotating machinery in this case. Failure to observe this
precaution could result in bodily injury.
ATTENTION:The drive is not equipped with a coast-stop pushbutton. You must install a hardwired
operator-accessible pushbutton that provides a positive interrupt and shuts down the drive. See
the LiquiFlo AC Power Modules Hardware Reference, Installation, and Troubleshooting manual
(D2-3411) for wiring information. Failure to observe this precaution could result in bodily injury.
ATTENTION:The user is responsible for ensuring that driven machinery, all drive-train
mechanisms, and application material are capable of safe operation at the maximum operating
speed of the drive. In V/Hz regulation, overfrequency protection in the drive is provided by means
of H.022. Failure to observe this precaution could result in bodily injury.
ATTENTION:The setting of parameters H.001 (Motor Nameplate Base Frequency), and P.004
(Maximum Speed) determines the motor maximum speed. These parameters must be set by a
qualified person who understands the significance of setting them accurately. Failure to observe
this precaution could result in bodily injury.
ATTENTION:When switching from auto to manual, or manual to auto, the drive will ramp to the
reference level provided by the new source at the rate specified in P.001 (Accel Time 1), P.002
(Decel Time 1), P.017 (Accel Time 2), or P.018 (Decel Time 2). Be aware that an abrupt speed
change may occur depending upon the new reference level and the rate specified in these
parameters. Failure to observe this precaution could result in bodily injury.
ATTENTION:It is the user’s responsibility to determine how to distribute the passwords. Reliance
Electricisnotresponsibleforunauthorizedaccessviolationswithin the user’sorganization. Failure
to observe this precaution could result in bodily injury.
ATTENTION:Do not alter the setting of any jumper not described in LiquiFlo Hardware Reference
manual (D2-3411). Failure to observe this precaution could result in damage to, or destruction
of, the equipment.
ATTENTION:For single-motor applications with no external thermal overload relay, P.040 (Motor
Overload Enable) should always be set to ON. Failure to observe this precaution could result in
damage to, or destruction of, the equipment.
ATTENTION:Use of power correction capacitors on the output of the drive can result in erratic
operation of the motor, nuisance tripping, and/or permanent damage to the drive. Remove power
correction capacitors before proceeding. Failure to observe this precaution could result in damage
to, or destruction of, the equipment.
!
ATTENTION:Most codes require that upstream branch circuit protection be provided to protect
input power wiring. Install the fuses recommended in table 3.7 of the LiquiFlo Hardware Reference
manual (D2-3411). Do not exceed the fuse ratings. Failure to observe this precaution could result
in damage to, or destruction of, the equipment.
ATTENTION:Do not route signal and control wiring with power wiring in the same conduit. This
can cause interference with drive operation. Failure to observe this precaution could result in
damage to, or destruction of, the equipment.
ATTENTION:Distribution system short circuit capacity shall not exceed the rating of the drive.
Failure to observe this precaution could result in damage to, or destruction of, the equipment.
ATTENTION:H.002 (Motor Nameplate Amps) must not exceed the rated amps found on the motor
nameplate. Overcurrent or excess heating of the motor could result if this is not done. Failure to
observe this precaution could result in damage to, or destruction of, the equipment.
The following ATTENTION statements do not apply to the default Carrier VFD configuration.
However, they do apply to the Reliance LiquiFlo AC Power Module.
ATTENTION:As a safety precaution, Reliance Electric recommends that you provide an audible
or visual alarm to indicate that the level sense start feature is enabled and the motor can start
when power is applied to the drive. You should also post warnings on the motor, the drive, and
any other applicable equipment to alert personnel that the application uses an automatic start-
up feature. Failure to observe this precaution could result in severe bodily injury or loss of life.
ATTENTION:Be aware of the following before enabling the level sense start function (P.054):
• Setting P.054 to ON immediately applies output power to the motor when all start conditions are
met.
• If the drive is running from the terminal strip, both the start and stop inputs are closed. If P.054 =
ON and a fault occurs, the drive coasts to rest and generates a fault. In this case, resetting and
clearing the fault immediately restarts the drive without any change to the start or stop input
states
• If P.026 (Function Loss Response) = 1, the control source is the terminal strip (start and stop
inputs are closed), and P.054 = ON, the drive coasts to rest if the function loss input is opened
and does not generate a fault. In this case, closing the function loss input immediately starts the
drive without any change to the start or stop input.
When this function is enabled, the user must ensure that automatic start up of the driven
equipment will not cause injury to operating personnel or damage to the driven equipment. In
addition, the user is responsible for providing suitable audible or visual alarms or other devices to
indicate that this function is enabled and the drive may start at any moment. Failure to observe this
precaution could result in severe bodily injury or loss of life.
ATTENTION:If P.062 (Option Port: Communication Loss Response) = 2 and P.054 (Level Sense
Start Enable) = ON and network communication is lost while the drive is running, the terminal
strip stop input will function as a STOP/RUN input. If the terminal strip stop input is opened, the
drive will stop. If the terminal strip stop input is closed, the drive will re-start. Failure to observe
this precaution could result in severe bodily injury or loss of life.
ATTENTION:When starting with search enabled (H.016 is set to any value but OFF), there will
be a several second delay, and the motor may drift in the forward and reverse direction, before
the motor begins operating in the desired direction even if reverse has been disabled in P.027.
Stay clear of rotating machinery. Failure to observe this precaution could result in bodily injury.
ATTENTION:When connected to a non-regenerative common DC bus, regeneration may cause
a rise in DC bus voltage. Be aware that other drives on the bus may experience an unexpected
speed increase due to the high bus voltage. Failure to observe this precaution may result in bodily
injury.
!
ATTENTION:The motor shaft can rotate in either direction by up to one (1) revolution, providing
minimum torque immediately after the identification procedure (initiated in H.020) has been
started. Stay clear of rotating machinery. Failure to observe this precaution could result in bodily
injury.
ATTENTION:In V/Hz regulation, if P.000 (Control Source) is set to OP (Option Port), and P.062
is set to 1 (Hold Last Reference), and the drive loses communication with the network, the drive
will maintain the last frequency command sent to it. Ensure that driven machinery, all drive-train
mechanisms, and application material are capable of safe operation at the maximum operating
speed of the drive. Failure to observe this precaution could result in bodily injury.
ATTENTION:Carrier Frequency (P.047) and Current Limit (P.005) must be set correctly before
activating the identification procedure (H.020) to avoid motor overloading and/or overheating.
Failure to observe this precaution could result in damage to, or destruction of, the equipment.
ATTENTION:The motor can rotate in the reverse direction during the identification procedure
(H.020) even if reverse disable has been selected in P.027. Uncouple the motor from any driven
machinery that could be damaged by reverse rotation. Failure to observe this precaution could
result in damage to, or destruction of, the equipment.
CONTENTS
Chapter 1
Chapter 2
Using This Manual
1.1 Required Publications...................................................................................... 1-1
1.2 Getting Assistance from Reliance Electric....................................................... 1-1
Identifying Drive Components Using Reference Drawings and Parts Lists
2.1 VFD Chiller Installation Drawing (500A and 643A VFD) ................................. 2-1
2.2 Front View of 500 and 643 Amp VFD with Parts List
(19XV04000601 rev 4.0) ................................................................................. 2-3
2.3 500 Amp and 643 Amp 19XRV Drive Module Component
Locations and Parts List .................................................................................. 2-4
2.4 Front View of 414 Amp VFD with Parts List (19XV04003001 rev 2.0) ............ 2-5
2.5 414 Amp 19XRV Drive Module Component Locations and Parts List............. 2-6
2.6 414 Amp 19XRV Drive Wiring Diagrams......................................................... 2-7
2.7 VFD System Wiring Diagram (19XV05007901 rev A)..................................... 2-9
2.8 500 Amp and 643 Amp 19XRV Drive Wiring Diagrams ................................ 2-14
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Using the Keypad/Display to Program, Monitor, and Control the Drive..............3-1
Identifying Parameter Defaults For Carrier Drives...............................................4-1
Verifying the Installation......................................... ...............................................5-1
Troubleshooting the Drive
6.1 Test Equipment Needed To Troubleshoot....................................................... 6-1
6.2 Verifying That DC Bus Capacitors Are Discharged ......................................... 6-1
6.3 Checking the Power Modules and Motor with Input Power Off ....................... 6-4
6.4 Troubleshooting the Drive Using Error Codes................................................. 6-6
6.4.1 Identifying Alarm Codes and Recovering.............................................. 6-7
6.4.2 Identifying Fault Codes and Recovering ............................................... 6-8
6.4.3 Accessing, Reading, and Clearing the Faults in the Error Log............ 6-11
6.5 Identifying Fatal Fault Codes and Recovering............................................... 6-14
6.6 Indentifying PMC Board Fault Codes and Recovering .................................. 6-15
6.7 Resetting a Checksum (CHS) Fault .............................................................. 6-15
Contents
I
II
Carrier VFD Quick Reference
CHAPTER 1
Using This Manual
The Carrier VFD Quick Reference is intended for qualified Carrier service personnel,
and is to be used during start up, operation, and maintenance of the variable speed
drive.
1.1 Required Publications
The Carrier VFD Quick Reference must be used with the following manuals:
LiquiFlo AC General Purpose (Volts/Hertz) and Vector Duty Drive
• D2-3410
Software Start-Up and Reference Manual
LiquiFlo AC Power Modules Hardware Reference, Installation, and
• D2-3411
Troubleshooting
Super Remote Meter Interface (RMI) Board for GV3000 and
• D2-3341
LiquiFlo AC Drives
Control and Configuration Software
• D2-3448
19XR, XRV Start-Up, Operation, and Maintenance Instructions
• 531-982
(19XR-5SS)
1.2 Getting Assistance from Reliance Electric
If you have any questions or problems with the products described in this manual,
contact your local Reliance Electric sales office. For technical assistance, call
1-864-284-5444.
Before calling, have the following information available (from the Reliance label):
• Reliance model number
• Carrier part number
• Serial number
• Carrier drawing number and revision
Using This Manual
1-1
1-2
Carrier VFD Quick Reference
CHAPTER 2
Identifying Drive Components Using
Reference Drawings and Parts Lists
Replace with 2.fm (11 X 17 Z-fold)
Identifying Drive Components Using Reference Drawings and Parts Lists
2-1
2-2
Carrier VFD Quick Reference
CHAPTER 3
Using the Keypad/Display to Program,
Monitor, and Control the Drive
If you are unfamiliar with the detailed operation of the keypad/display, refer to chapter
3 of the LiquiFlo Software Start-Up and Reference Manual (D2-3410).
Drive Status
LEDs
Keypad
Display
P.- - -
AUTO
MAN
Forward
Reverse
RUNNING
REMOTE
JOG
SPEED
VOLTS
Monitor Mode
LEDs
AMPS
RUN
JOG
Hz
AUTO
PROGRAM
Kw
FORWARD
TORQUE
Password
REVERSE
PROGRAM
Password LED
ENTER
STOP
RESET
START
RELIANCE
ELECTRIC
Stop / Reset Key
Start Key
Figure 3.1 – Keypad/Display
ATTENTION:When switching from auto to manual, or manual to auto,
the drive will ramp to the reference level provided by the new source at
the rate specified in P.001 (Accel Time 1), P.002 (Decel Time 1), P.017
(Accel Time 2), or P.018 (Decel Time 2). Be aware that an abrupt speed
change may occur depending upon the new reference level and the rate
specified in these parameters. Failure to observe this precaution could
result in bodily injury.
!
Using the Keypad/Display to Program, Monitor, and Control the Drive
3-1
3-2
Carrier VFD Quick Reference
CHAPTER 4
Identifying Parameter Defaults
For Carrier Drives
Use the following table to identify and set the parameter defaults for Carrier drives.
Important: Setting P.050 (Restore Defaults) to ON will restore the drive to Reliance defaults,
not Carrier defaults. If this has been done, set the following parameters to restore
Carrier defaults.
Parameter No.
P.000
Parameter Name
Control Source
Setting
rE
P.001
Accel Time 1
8
P.002
Decel Time 1
20
P.003
Minimum Speed
Maximum Speed
Current Limit
0.5
P.004
Job-specific (50 or 60)
P.005
110
-10
1
Terminal Strip Analog Input Offset
P. 0 0 9
Terminal Strip Analog Input Gain
0.99 (50LR4060, 64LR4060)
1.030 (41LR4060)
P. 0 1 0
P.011
P.013
P.027
P.028
P.043
P.044
P.052
H.000
H.001
H.002
H.021
H.022
r.001
Terminal Strip Analog Input Configure
Output Relay Configuration
Forward/Reverse Configuration
Speed Display Scaling
4
2
1
Job-specific
Fault Auto Reset Attempts
Fault Auto Reset Time
10
30
ON
AUTO/MAN Key Disable
Motor Nameplate Volts
Job-specific
Motor Nameplate Base Frequency
Motor Nameplate Amps
AC Line Volts
Job-specific
1.03 x Motor Nameplate Amps
Job-specific
Overfrequency Limit
Job-specific (57 or 69)
4
Analog Output 1 Source
Analog Output 1 Offset
60 (50LR4060, 64LR4060)
135 (41LR4060)
r.002
Analog Output 1 Gain
0.505 (50LR4060, 64LR4060)
0.503 (41LR4060)
r.003
r.035
r.036
r.037
r.046
r.050
Relay Output 1 (NO) Configuration
Relay Output 2 (NO/NC) Configuration
Relay Output 3 (NO/NC) Configuration
Relay Output 3 Delay Time
5
2
1
-999
35
Speed Detection Level 1
1
These parameters must be tuned or calibrated per the VFD Control Verification procedures (running and
non-running) found in the Carrier 19XR/XRV Start-Up, Operation, and Maintenance Instructions on pages
59-60.
For job-specific parameters, refer to the 19XR, XRV Start-Up, Operation, and Maintenance
Instructions manual (531-982) for further instructions. For descriptions of all parameters, refer to
the LiquiFlo Software Start-Up and Reference manual (D2-3410).
Identifying Parameter Defaults For Carrier Drives
4-1
4-2
Carrier VFD Quick Reference
CHAPTER 5
Verifying the Installation
Record the following job information:
1. Job Name:
2. Job Number:
3. City:
4. State:
5. Zip Code:
Record the following nameplate information:
1. Chiller Serial Number:
2. VFD Part Number:
3. VFD Serial Number:
4. Motor Rated Load Amps:
5. Incoming Voltage:
6. Incoming Frequency:
7. Carrier Part Number
and Revision:
8. ICVC Software Number:
Verifying the Installation
5-1
5-2
Carrier VFD Quick Reference
CHAPTER 6
Troubleshooting the Drive
This chapter describes how to troubleshoot the drive and the equipment that is
needed to do so.
6.1 Test Equipment Needed To Troubleshoot
An isolated multimeter will be needed to measure DC bus voltage and to make
resistance checks. Note that dedicated troubleshooting test points are not provided.
6.2 Verifying That DC Bus Capacitors Are Discharged
ATTENTION:DC bus capacitors retain hazardous voltages after input
power has been disconnected. After disconnecting input power, wait five
(5) minutes for the DC bus capacitors to discharge and then check the
voltage with a voltmeter to ensure the DC bus capacitors are discharged
before touching any internal components. Failure to observe this
precaution could result in severe bodily injury or loss of life.
!
The drive’s DC bus capacitors retain hazardous voltages after input power has been
disconnected. Perform the following steps before touching any internal components:
Step 1. Turn off and lock out input power. Wait five minutes.
Step 2. Verify that there is no voltage at the drive’s input power terminals.
Step 3. Measure the DC bus potential with a voltmeter while standing on a
non-conductive surface and wearing insulated gloves (1000 V).
Measure the DC bus potential at the test points on the Power Module
and 643 amp drives.
Step 4. Once the drive has been serviced, reapply input power.
Troubleshooting the Drive
6-1
6.3 Checking the Power Modules and Motor with Input
Power Off
Use the following procedure to check the drive’s Power Module circuitry with power off:
ATTENTION:DC bus capacitors retain hazardous voltages after input
power has been disconnected. After disconnecting input power, wait five
(5) minutes for the DC bus capacitors to discharge and then check the
!
voltage with a voltmeter to ensure the DC bus capacitors are discharged
before touching any internal components. Failure to observe this
precaution could result in severe bodily injury or loss of life.
Step 1. Turn off and lock out input power. Wait five minutes.
Step 2. Verify that there is no voltage at the drive’s input power terminals.
ensure that the DC bus capacitors are discharged.
Step 4. Disconnect the motor from the drive.
Step 5. Check all AC line and DC bus fuses.
Step 6. If a fuse is open, use a multimeter to check the input diodes and output
IGBTs. See table 6.1.
Step 7. Check motor impedance.
Step 8. Reconnect the motor to the drive.
Step 9. Reapply input power.
6-4
Carrier VFD Quick Reference
Table 6.1 – Resistance Checks
Input
Meter
Diode Connection
Component is OK if
resistance (R) is:
No.
1
(+)
*
(-)
Component is defective if:
SCR1
SCR2
SCR3
SCR4
SCR5
SCR6
10 < R < 1 megohm
Continuity (short circuit) or
open when the meter is
connected with reversed
polarity.
2
*
3
*
4
*
5
*
6
*
7
SCR1 **
SCR2 **
SCR3 **
SCR4 **
SCR5 **
SCR6 **
8
9
10
11
12
* (+) DC Bus Volts power terminal
** (-) DC Bus Volts power terminal
Table 6.1 - Resistance Checks (Continued)
Meter
IGBT
No.
Connection
Component is OK if
resistance (R) is:
(+)
(-)
W/T3
V/T2
U/T1
Component is defective if:
1
2
3
4
5
6
*
*
*
10 < R < 1 megohm
Continuity (short circuit) or
open when the meter is
connected with reversed
polarity.
W/T3 **
V/T2 **
U/T1 **
* (+) DC Bus Volts power terminal
** (-) DC Bus Volts power terminal
Troubleshooting the Drive
6-5
6.4 Troubleshooting the Drive Using Error Codes
The drive can display two kinds of error codes, called alarm and fault codes, to signal
a problem detected during self tuning or drive operation. Fault and alarm codes are
Alarm Codes
An alarm condition is signified by a two- or three-letter code flashing on the display.
The drive will continue to operate during the alarm condition. You should investigate
the cause of the alarm to ensure that it does not lead to a fault condition. The alarm
code remains on the display as long as the alarm condition exists. The drive
automatically clears the alarm code when the condition causing it is removed.
Fault Codes
A fault condition is also signified by a two- or three-letter code flashing on the display.
If a fault occurs, the drive coasts to stop and the RUNNING LED turns off. The first
fault detected is maintained flashing on the display, regardless of whether other faults
occur after it. The fault code remains on the display until it is cleared by the operator
using the STOP/RESET key or using the fault reset input from the selected control
source (P.000).
Error Log
The drive automatically stores all fault codes for faults that have occurred in the
system error log. The error log is accessible through the keypad, the optional OIM, or
the optional CS3000 software.There is no visual indication that there are faults in the
log. You must access the error log to view the faults.
The error log holds the 10 most recent faults that have occurred. The last fault to occur
is the first one to appear on the display when you access the error log. The faults in
the log are numbered sequentially. The most recent fault is identified with the highest
number (up to 9). Once the log is full, older faults are discarded from the log as new
faults occur.
For each entry in the error log, the system also displays the day and time that the fault
occurred. The day data is based on a relative 247-day counter (rolls over after
247.55). The time is based on a 24-hour clock. The first digits of the clock data
represent hours. The last two digits represent minutes. The clock can be reset using
P.030 (Elapsed Time Meter Reset).
All entries in the error log and the day and time data are retained if power is lost. Refer
keypad.
6-6
Carrier VFD Quick Reference
6.4.1 Identifying Alarm Codes and Recovering
alarm code will disappear from the display.
Table 6.2 – List of Alarm Codes
Alarm
Code
HIdc
Description
High DC bus
voltage
Alarm Cause
The DC bus is charged above the
trip threshold. (If U.018 > 415,
Corrective Action
Increase the deceleration time in
P.002, P.018.
DC bus is above 741 VDC. If U.018
≤ 415, DC bus is above 669 VDC.)
Install optional snubber resistor
braking kit.
Verify that the AC input is within
specification. Install an isolation
transformer if required.
Check the actual line voltage against
U.018.
I-Ac
I-En
V/Hz identification V/Hz identification procedure is
procedure active enabled and in progress.
Allow identification procedure to
finish.
Press keypad STOP/RESET to
cancel identification procedure if
desired.
V/Hz identification H.020 = On; V/Hz identification
Proceed with V/Hz identification
procedure
enabled
procedure has been enabled but not procedure, start drive and allow
started.
procedure to begin. Display will
change to I-Ac when drive is started.
Change H.020 to OFF to cancel
identification and clear I-En if
desired.
LIL
Low AC input line
AC input line is low.
For SVC, indicates DC bus is being or U.018) to match actual AC line
regulated. No corrective action is
required.
Adjust line voltage parameter (H.021
voltage.
S-Ac
Vector self-tuning
active
Vector self-tuning is enabled and in Allow vector self-tuning procedure to
progress.
finish.
Press keypad STOP/RESET to
cancel vector self-tuning procedure
if desired.
S-En
Vector self-tuning
enabled
U.008 = On; vector self-tuning has
been enabled but not started.
Proceed with vector self-tuning, start
drive and allow self-tuning
procedure to begin. Display will
change to S-Ac when drive is
started.
Change U.008 to OFF to cancel
self-tuning and clear S-En if desired.
Troubleshooting the Drive
6-7
6.4.2 Identifying Fault Codes and Recovering
ATTENTION: DC bus capacitors retain hazardous voltages after input
power has been disconnected. After disconnecting input power, wait five
minutes for the DC bus capacitors to discharge and then check the
voltage with a voltmeter to ensure the DC bus capacitors are discharged
before touching any internal components. Failure to observe this
precaution could result in severe bodily injury or loss of life.
!
and press the STOP/RESET key on the keypad, or assert the fault reset from the
selected control source (P.000). Because multiple faults can occur and only the first
will be displayed, you must access the error log in order to view all of the faults that
Table 6.3 – List of Fault Codes
Fault
Description
Analog input signal P.011 = 4 or 5 and 4 to 20 mA analog Verify that P.011 is set correctly.
Code
AIn
Fault Cause
Corrective Action
loss
input is below 1 mA.
Check that the analog input source
supply ≥1 mA.
bYC
CHS
Incorrect precharge Precharge initiated and incorrect
status precharge status is returned.
Default parameter During drive operation:
restore (checksum Regulator board failure.
Check operation of the precharge.
Contact Reliance or replace Regulator
board.
Contact Reliance.
error)
After Regulator board replacement:
EC
Earth current failure Unintentional grounding of the input.
(ground fault)
Check isolation between ground and
output terminals. Possible leakage,
current sensor defects; replace
sensor.
EEr
Non-volatile
memory write
failure
Failure on write to non-volatile
memory.
Connect CS3000 software to upload
parameters or record by hand. Then
replace Regulator board. Parameter
values will be lost when power is
cycled.
EL
Encoder loss
Drive is not detecting feedback from
the encoder.
Check the connection between the
encoder and the drive. Check the
encoder/motor coupling.
For SVC operation, conditions exist for For SVC operation, check motor data
more than 5 seconds that may result in parameters. Check U.006. Incorrect
an inability to complete a ramp-to-rest magnetizing current may be generated
stop.
by performing self-tuning with a load
connected to the motor.
FL
Function loss
Function loss input on control terminal Check external interlocks at terminals
is opened.
16, 20.
HId
High time
identification
aborted
Identification process for V/Hz has
been aborted.
See H.019 for identification result.
HIL
6-8
High line voltage
Input voltage more than 15% above
nominal.
Check actual line voltage against
U.018 or H.021.
Carrier VFD Quick Reference
Table 6.3 – List of Fault Codes (Continued)
Fault
Code
HU
Description
High DC bus
voltage
Fault Cause
DC bus voltage too high (capacitor
protection).
Corrective Action
Check input line voltage; if necessary,
add transformer.
Deceleration time too short.
Increase deceleration time
P.002/P.018/P.023 versus Maximum
Speed/Hz (P.004). Install DB option
with resistors.
IPL
LU
Input phase loss
Voltage ripple on DC bus due to
missing input phase or an imbalance applied to the drive. Check all phases.
between phases.
DC bus voltage too low. Line dip too
long (P.042).
Verify that proper voltage is being
Low DC bus
voltage
Check input voltage, line fuses. If
necessary, add transformer. Check
value of Ride Through Time (P.042),
Line Voltage (H.021, U.018).
Input rectifier diodes defective.
Check DC bus voltage. If incorrect,
replace diode set.
nCL
nId
Network comm loss Communications with the
AutoMax network have been lost.
Check network cabling from network
master to network option board. Check
that network master is operating
properly.
Reset fault. Perform Identification
Request. Restart drive.
Identification
Request not yet
performed (V/Hz
only)
Drive started but Identification
Result = Zero.
OC
Overcurrent
Output phase-to-phase short.
Bus voltage line-to-line.
Check isolation between each output
line.
Check transistor modules for correct
output. If incorrect, possible board
defect; replace. Possible Hall effect
current sensor defective; replace.
Check isolation between ground and
output terminals. Possible leakage
current sensor defect; replace sensor.
(steady state).
Trips between 185
to 200% load
(based on inverter
type current) check
Power Module
rating.
Ground fault.
Momentary overload.
Check for motor overload; reduce load
on motor.
Bad motor.
Check motor for correct operation.
Torque boost / V/Hz too high (V/Hz).
Check parameters H.001, H.002,
and/or H.003. Enable Identification
Request (H.020)
Motor unknown to regulator (V/Hz).
Parameter settings (vector).
Check that regulator was updated with
actual motor characteristics via
Identification Request (H.020).
Check Encoder PPR (U.001), Motor
Poles (U.002), Base Frequency
(U.003), Motor Nameplate Amps
(U.004), Magnetizing Current (U.006),
Speed Regulator Prop. Gain (U.012).
Encoder wired incorrectly, wrong PPR. Check encoder wiring. Perform vector
self-tuning.
OCA
Overcurrent (at
acceleration)
Overcurrent condition occurred while See OC fault corrective actions.
accelerating.
Increase acceleration time (P.001,
P.017, P.021).
Acceleration time too short.
Troubleshooting the Drive
6-9
Table 6.3 – List of Fault Codes (Continued)
Fault
Code
Description
Fault Cause
Corrective Action
OCb
Overcurrent
(at DC braking)
DC voltage too high.
Check parameters H.006, H.007.
OCd
OF
Overcurrent (at
deceleration)
Overcurrent condition occurred while See OC fault corrective actions.
decelerating.
Increase deceleration time (P.002,
P.018, P.022).
Deceleration time too short.
Overfrequency
Drive has exceeded maximum
allowable output frequency.
Regenerating energy is too high.
Stability or slip compensation circuit
adds frequency reference.
If H.016 ON, searching current is too
high. Motor is too small.
Vector: Check parameters Encoder
PPR (U.001), Motor Poles (U.002),
Base Frequency (U.003).
V/Hz: Check DC bus voltage; increase
decelerating time. Check values Max
Speed (P.004) / Overfreq. (H.022).
Check slip compensation (H.004).
If H.016 ON, check motor size versus
Power Module size, recheck setting of
P.005 (too high).
OH
OL
Drive
Cooling fan failure.
Check ambient temperature, cooling
fan, minimum clearances around drive.
Vector: Check actual/Motor Rated
Nameplate Amps (U.004)
V/Hz: Check actual current/Torque
Boost (H.003).
overtemperature
Motor overload
Excess motor current.
V/Hz: Torque boost too high, therm.
overload level too low.
Check that Power Module is sized
correctly.
Reduce load on motor (for example, at
low frequency).
Excess load on motor, for example, at Check that Power Module is sized
too low speeds.
correctly. Reduce load on motor (e.g.,
at low frequency).
Loss of phase connection.
Check output lines to the motor.
OPL
OSP
Motor output phase Phase lost between drive and motor. Check connections and cable of all 3
loss
phases and motor windings. Replace
any damaged cable.
Overspeed
(Vector only)
RPM above 130% Maximum Speed
(P.004), speed regulator response not Poles (U.002), Base Frequency
Check Encoder PPR (U.001), Motor
optimized.
(U.003), Motor Nameplate RPM
Speed (U.005). Check Reg.
Proportional (U.012) Integral Gain
(U.013)
PUc
PUn
Missing Power
Module ID
Bad or disconnected cable between
Regulator and Power Module.
Check cables between Regulator
board and Power Module.
connector
Power Module not Drive parameters have been restored Power Module must be configured by
identified
to power-up defaults. Regulator has
not been configured to match Power
Module.
Reliance service personnel.
PUo
Drive power
electronic
overload
Power Module overloaded.
Too high DC Braking Current
(H.007) or Torque Boost (H.003).
Check load to Power Module.
Check Power Module sizing versus
application. Check DC Braking Current
value (H.007). Check Torque Boost
(H.003).
SF
Self-tuning status
(Vector only)
See parameter U.009
6-10
Carrier VFD Quick Reference
Table 6.3 – List of Fault Codes (Continued)
Fault
Code
SrL
Description
Communication
loss between
Regulator/PC/OIM
Spurious host PC
comm interrupt
Fault Cause
Corrective Action
Serial port communication cable, PC Check connection cable and
or OIM communication port setup.
Regulator board failure.
communication port setup.
Replace Regulator board.
UAr
UbS
Asymmetrical bus One of 3 differnet faults has occurred;
fault. Look at the 3 1. Input Ground Fault - Excessive
LEDs on the Power current flowing bwtween any of the
1. Check the connection from the
current transformer to the Bus Control
three input phases and earth ground. board.
Module Interface
board. They
2 . Asymmetrical Bus - When
2. Replace shorted capacitor, fix loose
connection, or replace discharge
resistor.
indicate which fault measuring between the cap bank
has occurred by midpoint and the +DC bus and -DC
flashing in unison. bus, there is a 200 V or greater
mismatch.
1 = Input Ground
Fault;
2 = Asymmetrical
Bus;
3 = Slow Ramp
Rate of DC Bus
3. Slow Ramp Rate of DC Bus - DC 3. Turn on drive. If UbS is displayed,
bus did not change to the ful value turn drive off and then on again very
given time allowed. Can occur only at quickly. If the UbS fault goes away and
power-up.
the DC bus charges, replace the Bus
Control board.
6.4.3 Accessing, Reading, and Clearing the Faults in the Error Log
The following procedure shows how to access and clear the error log. Note that you
cannot clear a single entry from the error log. The entire log, including all the fault
codes and the day and time stamp of each fault, will be cleared simultaneously using
this procedure.
Step 1. Press the PROGRAM key.
The First Menu General parameters are
displayed. The PROGRAM LED will turn on.
Troubleshooting the Drive
6-11
Step 2. Press the ▼ key until Err is displayed.
Step 3. Press the ENTER key.
If no faults have occured, Err will be
displayed again. If only one fault has
occurred, the fault code will be displayed as
the first entry in the log. If more than one
fault has ocurred, the first entry is the latest
fault that occurred.
Step 4. Press the ▲ or the ▼ key. The display steps through the error log entries,
which are numbered 0 through 9 (maximum).
Step 5. Press the ENTER key.
The display shows the day stamp, which can
range from 0 to 248 days.
6-12
Carrier VFD Quick Reference
Step 6. Press the ▼ key.
The display shows the time stamp, which is
based on a 24-hour clock. Use the arrow
keys to move between the day and time
data.
Step 7. Press the PROGRAM key, which displays the error log entries again.The
display shows the error log entry viewed prior to or associated with the time
stamp.
Step 8. Repeat steps 4 though 7 for each additional error log entry to view the time
and date for each error log entry.
Step 9. When you have viewed all the entries, you should clear the error log. Press
the ▼ key while you are viewing any entry in the log until the display shows
CLr. Press ENTER to clear the error log. All entries will be cleared.
Step 10. Err will be displayed again to indicate that the log is empty.
Step 11. Press the PROGRAM key to access monitor mode.
Troubleshooting the Drive
6-13
6.5 Identifying Fatal Fault Codes and Recovering
Fatal fault codes are distinguished by the letter F preceding the code. They normally
indicate a malfunction of the microprocessor on the Regulator board. In some cases,
need to replace the Regulator board.
If the fault code FUE appears in error log entry 0, it indicates a fatal fault occurred as
power was lost. Contact Reliance Electric or observe the drive for subsequent fatal
errors before turning off power. Fatal fault codes are lost after power loss.
Table 6.4 – Fatal Fault Codes That Can Be Reset
Code
F 3
Fault Description
Encoder power-up
diagnostic error.
Fault Cause
Corrective Action
Encoder voltage is less than Turn off power to the drive. Disconnect
10 V.
the encoder wiring from the terminal strip.
Turn power to the drive back on.
If the F3 error does not occur again, the
problem is in the wiring between the drive
and the encoder.
If the F3 error does occur again, the
problem is in the Regulator board, which
should be replaced.
F 60
F 61
Option port identification
error.
The option board could not Check the ribbon cable between the
be identified by the regulator. Regulator board and the option board.
Check the option board’s jumper settings.
Refer to the appropriate option board
instruction manual for more information
about the option board.
Option board power-up
diagnostic failure.
Option board has failed one Check the ribbon cable between the
or more power-up
diagnostics.
Regulator board and the network option
board. Replace the option board if
necessary.
Refer to the appropriate option board
instruction manual for more information
about the option board.
F 62
or
F 26
Option board runtime
error.
During operation, the option If intermittent, check for causes of noise,
board watchdog failed or
handshaking with the drive
failed.
for proper grounding, and that outputs
are not exceeding rated current
capacities.
Replace the option board if necessary.
Refer to the appropriate option board
instruction manual for more information
about the option board.
6-14
Carrier VFD Quick Reference
6.6 Indentifying PMC Board Fault Codes and Recovering
ATTENTION:Viewing the PMC board LEDs requires electrical circuits
to be exposed. Stay clear if unit must be running. Disconnect and lock
out or tag power source if contact must be made. Failure to observe this
precaution could result in severe bodily injury or loss of life.
!
Table 6.5 lists PMC board fault codes. These faults can be identified using the three
LEDs located on the Regulator board.
Table 6.5 – PMC Board Fault Codes
Status of LEDs 1-3
Fault Description
Corrective Action
None required.
LEDs 1-3 all on.
Normal operation
(60 Hz, 50% duty);
no fault.
LEDs 1-3 all off.
VAC_LINE = ‘lo’
None required. The board will
recover when the line
becomes present.
LEDs 1-3 flash in a
3-flash sequence.
VDC_CHG = ‘lo’
ASYM_FAULT = ‘lo’
ACGNDFLT = ‘lo’
Reset board.
LEDs 1-3 flash in a
2-flash sequence.
Reset board.
LEDs 1-3 flash in a
1-flash sequence.
Reset board. (This circuit was
removed on the 350 HP
assembly.)
6.7 Resetting a Checksum (CHS) Fault
Perform the following procedure when a new Regulator board is installed or if a CHS
fault repeats.
Step 1. Press and hold STOPIRESET, PROGRAM, and DOWN ARROW for 5 to 10
seconds. A PUn error should appear.
Step 2. Press PROGRAM. P.--- is displayed.
Step 3. Press ENTER. P.000 is displayed.
Perform steps 4 through 7 if access to the second menu has not already been
enabled.
Step 4. Press UP ARROW until P.006 is displayed.
Step 5. Press ENTER.
Step 6. Press UP ARROW until 107 is displayed.
Step 7. Press ENTER.
Perform steps 8 through 11 if changing modes of operation (V/Hz or Vec). Otherwise,
skip to step 12.
Troubleshooting the Drive
6-15
Step 8. Press UP ARROW until P.048 is displayed.
Step 9. Press ENTER.
Step 10. Press UP or DOWN ARROW to select UEC or U-H mode.
Step 11. Press ENTER. Observe SELF is displayed briefly.
Step 12. Press UP or DOWN ARROW until P.006 is displayed.
Step 13. Press ENTER.
Step 14. Press UP ARROW until 75 is displayed.
Step 15. Press ENTER.
Step 16. Press UP ARROW until R998 is displayed.
Step 17. Press ENTER.
Step 18. Press UP ARROW until ON is displayed.
Step 19. Press ENTER.
Step 20. Press UP ARROW until P.999 is displayed. Depending on software version,
the display may show PUGH or P.999.
If PUCH is displayed, wait for 0 to display. The procedure is complete.
If P.999 is displayed, continue with step 21.
Step 21. Press ENTER.
Step 22. Press UP ARROW until the correct power unit current and voltage rating
code appears. The codes are as follows:
Model
Amps
Code
Number
41LR4060
50LR4060
64LR4060
414
500
643
41.4
50.4
64.4
Step 23. Press ENTER. PUCH should appear briefly.
The drive is ready to operate. If in vector mode, enter the correct values for
U parameters and perform SELF TUNING.
6-16
Carrier VFD Quick Reference
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Rockwell Automation / Reliance Electric Drives
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Publication Name: LiquiFlo 1.5 AC Drive, Hardware Reference Version 1.2
Publication Number: D2-3466-2
Publication Date: May 2005
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Copyright ©2005 Rockwell Automation, Inc. All Rights Reserved. Printed in USA.
Publication D2-3466-2 - May 2005 -- Supercedes D2-3466-1 - June 2002
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