Rockwell Automation Liqui-Flo 1.5 General Purpose and Vector Duty - Manual (Page 132)

5-18 LiquiFlo 1.5 AC Drive, Software Reference Version 1.2
Table 5.13 – Motor Operation is Unstable
Indication Cause(s) Corrective Action
None Motor data was incorrectly
entered or autotune was not
performed. 1. Correctly enter motor
nameplate data.
2. Perform static or rotate
autotune procedure (61).
Table 5.14 – Drive Will Not Reverse Motor Direction
Indication Cause(s) Corrective Action
None Digital input is not selected
for reversing control. Check Digital In”x” Sel. Choose
correct input and program for
reverse.
Digital input is incorrectly
wired. Check input wiring.
Direction Mode (190)
parameter is incorrectly
programmed. Reprogram Direction Mode (190)
for analog bipolar or digital
unipolar control.
Motor wiring is improperly
phased for reverse. Switch two motor leads.
A biploar anlog speed
command input is
incorrectly wired or signal is
absent. 1. Use meter to check that an
analog input voltage is
present.
2. Check wiring.
Positive voltage commands
forward direction.
Negative voltage commands
reverse direction.
Table 5.15 – Stopping the Drive Results in a Decel Inhibit Fault
Indication Cause(s) Corrective Action
Decel Inhibit fault
screen.
LCD status line
indicates Faulted.
The bus regulation feature is
enabled and is halting
deceleration due to excessive
bus voltage. Excess bus
voltage is normally due to
excessive regenerated
energy or unstable AC line
input voltages.
Internal timer has halted drive
operation.
1. Reprogram bus regulation
(parameters 161 and 162) to
eliminate any Adjust Freq
selection.
2. Disable bus regulation
(parameters 161 and 162)
and add a dynamic brake.
3. Correct AC input line
instability or add an isolation
transformer.
4. Reset drive.