Rockwell Automation 161 SERIES B FRN 2.001 - Manual (Page 40)

Faults & Troubleshooting
36
Possible Problems and Corrective Actions
Ground Fault There was a ground fault at the
motor output terminals. Check for a ground fault at the output terminals.
Excess Input
Voltage The input voltage is higher than
permitted. Check the incoming AC line.
Overtemperature
fault Excessive heat has been detected
inside the drive. Clear blocked or dirty heat sink fins. Check
ambient temperature. Check for proper
clearance distances. On models with a fan,
check for fan operation. Check for excessive
motor load.
PTC circuit
triggered. The resistance from the external
thermistor was too large. (Greater
than 3 k
Ω
)
Check for an overload condition at the motor, or
check for proper ventilation at the motor.
Communication
Error A loss of communication has
occurred. Check communication connections.
Problem Corrective Action
The motor does not start. 1. Check the power circuit.
•Check the supply voltage.
•Check all fuses and disconnects.
2. Check the Motor.
•Verify that the motor is connected properly.
•Verify that no mechanical problems exist.
3. Check the control input signals.
•Verify that the start signal is present.
•Verify that either the Run Forward or Run Reverse signal
is active, but not both.
•Verify wiring of H, O, and L terminals if a remote speed
pot is being used.
•If using 3 wire start, ensure that a 3 wire stop is
programmed.
•Verify that the reset command {RS} is not active.
4. Check the setting of PA01-[Frequency Command Select].
5. Check setting of PA02 - [Start Command Select].
•If set to keypad start check PF04-[Start Key Direction],
when set to 02, the 00 {FW} or 01 {RV} digital input must
be active before pressing start key.
•If set to keypad control, ensure that a jumper is connected
between terminals 3 and P24.
6. If any digital input is set to 31{OPE} then the setting of A02 is
ignored as the digital input overrides this setting. The start
command will come from the control terminals. If the input is
programmed, but NOT active the start command will come
from the control terminals. If the input is programmed AND
active the start command will come from the Start key on the
keypad.
The direction of motor rotation is incorrect. 1. Check the motor output connections, reverse two of the three
phases if necessary.
2. Check that the control inputs have been wired correctly.
3. If using 3 wire control ensure that the 3 wire forward/reverse
input is programmed.
4. Check setting of PF04 – [Start Key Direction].
Fault
Number Fault Name Fault Description Corrective Action
E 14
E 15
E 21
E 35
E 60