94
Table 17 — Fault Code Descriptions and Corrective Actions
Fault Type indicates if the fault is:
1 — Auto-resettable
2 — Non-resettable
3 — User-configurable
4 — Normal Fault
LEGEND
NOTE: Reliance parameter numbers are indicated by ( ).
VFD FAULT
CODE
FAULT TYPE DESCRIPTION ACTION
ICVC FAULT
STATE
2 Auxiliary Input 1 Input is open. Check remote wiring. 206
3 Power Loss 1, 3 DC bus voltage remained below 85% of
nominal for longer than Power Loss Time
(185).
Enable/disable with Fault Config 1 (238).
Monitor the incoming AC line for low voltage or
line power interruption.
215
4 UnderVoltage 1, 3 DC bus voltage fell below the minimum
value of 407V DC at 400/480V input
Enable/disable with Fault Config 1(233).
Monitor the incoming AC line for low voltage or
power interruption.
215
5 OverVoltage 1 DC bus voltage exceeded maximum value. Monitor the AC line for high line voltage or
transient conditions. Bus overvoltage can also
be caused by motor regeneration. Extend the
decel time or install dynamic brake option.
205
7 Motor Overload 1, 3 Internal electronic overload trip.
Enable/disable with Fault Config 1 (238).
An excessive motor load exists. Reduce load
so drive output current does not exceed the
current set by Motor NP FLA (42).
217
8 Invtr Base Temp 1 Base temperature exceeded limit. Check for proper temperature and flow rate of
coolant.
219
9 Invtr IGBT Temp 1 Output transistors have exceeded their
maximum operating temperature.
Check for proper temperature and flow rate of
coolant.
219
12 HW OverCurrent 1 The drive output current has exceeded the
hardware current limit.
Check programming. Check for excess load,
improper DC boost setting, DC brake volts set
too high or other causes of excess
current.
286
13 Ground Fault 1 A current path to earth ground in excess of
7% of drive rated amps has been detected
at one or more of the drive output
terminals.
Check the motor and external wiring to the
drive output terminals for a grounded
condition.
220
24 Decel Inhibit 3 The drive is not following a commanded
deceleration because it is attempting to
limit bus voltage.
a. Verify input voltage is within drive specified
limits.
b. Verify system ground impedance follows
proper grounding techniques.
c. Disable bus regulation and/or add dynamic
brake resistor and/or extend deceleration
time.
204
25 OverSpeed Limit 1 Functions such as slip compensation or
bus regulation have attempted to add an
output frequency adjustment greater than
that programmed in Overspeed Limit (83).
Remove excessive load or overhauling condi-
tions or increase Overspeed Limit (83).
206
29 Analog In Loss 1, 3 An analog input is configured to fault on
signal loss. A signal loss has occurred.
Configure with Anlg In 1, 2 Loss (324, 327).
a. Check parameters.
b. Check for broken/loose connections at
inputs.
206
33 Auto Rstrt Tries 3 Drive unsuccessfully attempted to reset a
fault and resume running for the pro-
grammed number of Auto Rstrt Tries (174).
Enable/disable with Fault Config 1 (238).
Correct the cause of the fault and manually
clear.
206
35 Current FBK Lost 4 The magnitude of motor current feedback
was less than 5% of the configured Motor
Nameplate Amps for the time configured in
the Motor Imbalance Time. Detection of
this fault is disabled when the Motor Imbal-
ance Time is set to the maximum value of
10.0 seconds.
Verify connection of current feedback device
and motor terminals. If fault repeats replace
current feedback devices and/or power supply.
206
36 SW OverCurrent 1 The drive output current has exceeded the
software current.
Check for excess load, improper DC boost set-
ting. DC brake volts set too high.
286
37 Motor I Imbalance Phase current displayed in Imbalance Dis-
play (221) > percentage set in Imbalance
Limit (49) for time set in Imbalance Time
(50).
Clear fault. 225
DPI — Drive Peripheral Interface
EPROM — Erasable, Programmable, Read-Only
FLA — Full Load Amps
IGBT — Insulated Gate Bipolar Transistor
I/O — Inputs/Outputs
NP — Nameplate
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