84 Rockwell Automation Publication 20A-UM001N-EN-P - July 2013
Chapter 2 Troubleshooting
IR Volts Range 25 2 The drive auto tuning default is “Calculate” and the value calculated for IR Drop Volts is not in
the range of acceptable values. This alarm clears when all motor nameplate data is properly
entered.
IXo
VoltageRange
28 2 Motor leakage inductance is out of range.
Load Loss 14 Output torque current is below [Load Loss Level] for a time period greater than [Load Loss
time].
MaxFreq
Conflict
23 2 The sum of [Maximum Speed] and [Overspeed Limit] exceeds [Maximum Freq]. Raise
[Maximum Freq] or lower [Maximum Speed]
and/or [Overspeed Limit] so that the sum is less than or equal to [Maximum Freq].
Motor
Thermistor
12 [Fault Config 1] or [Alarm Config 1] Bit 7 “Motor Therm” is enabled and the analog Input
voltage is <0.2 Volts or >5.0 Volts.
Motor Type
Cflct
21 2 [Motor Type] has been set to “Synchr Reluc” or “Synchr PM” and one or more of the following
exist:
· [Torque Perf Mode] = “Sensrls Vect,” “SV Economize” or “Fan/Pmp V/Hz.”
· [Flux Up Time] is greater than 0.0 Secs.
· [Speed Mode] is set to “Slip Comp.”
· [Autotune] = “Static Tune” or “Rotate Tune.”
NP Hz Conflict 22 2 Fan/pump mode is selected in [Torq Perf Mode] and the ratio of [Motor NP Hertz] to
[Maximum Freq] is greater than 26.
Power Loss 3 1 Drive has sensed a power line loss.
Precharge
Active
1 1 Drive is in the initial DC bus precharge state.
PTC Conflict 31 [Fault Config 1] or [Alarm Config 1] Bit 7 “Motor Therm” is enabled and Analog In 1 is set to
milliamperes.
Sleep Config 29 2 Sleep/Wake configuration error. With [Sleep-Wake Mode] = “Direct,” possible causes include:
drive is stopped and [Wake Level] < [Sleep Level].“Stop=CF,” “Run,” “Run Forward,” or “Run
Reverse.” is not configured in [Digital Inx Sel].
Speed Ref Cflct 27 2 [Speed Ref x Sel] or [PI Reference Sel] is set to “Reserved”.
Start At
PowerUp
4 1 [Start At PowerUp] is enabled. The drive can start at any time within 10 seconds of drive
powerup.
TB Man Ref
Cflct
30 Occurs when:
· “Auto/Manual” is selected (default) for [Digital In3 Sel], parameter 363
and
· [TB Man Ref Sel], parameter 96 has been reprogrammed.
No other use for the selected analog input can be programmed.
Example: If [TB Man Ref Sel] is reprogrammed to “Analog In 2,” all of the factory default uses
for “Analog In 2” must be reprogrammed (such as parameters 90, 117, 128, and 179). See also
Auto/Manual Examples on page 118
.
To correct:
· Verify/reprogram the parameters that reference an analog input
or
· Reprogram [Digital In3] to another function or “Unused.”
UnderVoltage 2 1 The bus voltage has dropped below a predetermined value.
UserSet
Conflict
51 2 [Digital Inx Sel] values differ in different user sets.
VHz Neg Slope 24 2 [Torq Perf Mode] = “Custom V/Hz” and the V/Hz slope is negative.
Waking 11 1 The Wake timer is counting toward a value that will start the drive.
(1) See page 77 for a description of alarm types.
Table 3 - Alarm Descriptions and Actions (Continued)
Alarm
No.
Type
(1)
Description
E C v2
E C v2
E C
E C v2
E C
E C v2
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