Rockwell Automation Allen-Bradley LiquiFlo 2.0, User Manual

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Rockwell Automation Publication D2-3518-4 - January 2020 197
Troubleshooting the Drive Chapter 10
Table 19 - Alarm Names Cross-Referenced by Alarm Numbers
About Faults Faults indicate conditions within the drive that require immediate attention. The
drive responds to a fault by initiating a coast-to-stop sequence and turning off
output power to the motor.
In addition, some faults are auto-resettable, non-resettable, and/or
user-configurable as described in
Table 20 .
Table 20 - Fault Types
The drive indicates faults in the following ways:
• Status LEDs on the drive control panel (see Determining Drive Status
Using the Status LEDs on page 192 ).
• Drive status parameters Drive Status 1 (209) and Drive Status 2 (210).
• Entries in the fault queue (see
About the Fault Queue on page 198 ).
• Pop-up screen on the OIM. See Figure 81 . The screen displays:
– Fault number
– Fault name
– Time that has elapsed since fault occurred.
No.
(1)
(1) Alarm numbers not listed are reserved for future use.
Alarm No.
(1)
Alarm
1 Precharge Active 18 Dig In ConflictB
2 UnderVoltage 19 Dig In ConflictC
3 Power Loss 20 Bipolar Conflict
5 Analog In Loss 21 Motor Type Conflict
6 IntDBRes OvrHeat 22 NP Hz Conflict
8 Drive OL Level 1 23 MaxFreq Conflict
9 Drive OL Level 2 24 VHz Neg Slope
12 No Line Sync 25 IR Volts Range
13 Power Phased ACB 26 FluxAmps Ref Rang
17 Dig In ConflictA 27 Speed Ref Cflct
Ty
pe
Fault Description

Auto-Reset/Run If the drive is running when this type of fault occurs, and Auto Rstrt Tries (174) is set
to a value greater than 0, a user-configurable timer, Auto Rstrt Delay (175) begins.
When the timer reaches zero, the drive attempts to automatically reset the fault. If
the condition that caused the fault is no longer present, the fault resets and the drive
restarts.

Non-Resettable This type of fault normally requires drive or motor repair. The cause of the fault must
be corrected before the fault can be cleared. The fault resets on power up after repair.

User-Configurable These faults can be enabled/disabled to either annunciate or ignore a fault condition
using Fault Config 1 (238).

Normal Fault The fault is resettable using normal fault clearing mechanisms on the drive (Stop/
Reset button, powercycling, etc.) or through VS Utilities.