User Manual

Diagnostics and Troubleshooting
11-3
Keypad Redundant Start Keypad hardware malfunction. Turn power off to the unit. Verify
the keypad cable connection.
Turn power on to the unit.
Function Loss Open connection on Function
Loss control terminal block
inputs (terminals 7 and 11).
Check and restore the Function
Loss connection on the control
terminal block (see section 7.1).
Check the external sensors
wired into the Function Loss
string.
High Bus Voltage High input line.
Deceleration time too fast.
Overhauling load.
Check input line to verify voltage
is within operating
specifications.
Increase deceleration time using
the accel/decel rotary switch
(see section 8.2).
EEPROM Drive ID Contents of the EEPROM is
corrupted.
Reset parameters to default
values and cycle power. If fault
persists, replace unit.
Low Bus Voltage Low input line
Temporary loss of input line.
Check input line to verify voltage
is within operating
specifications.
Overcurrent
(Current exceeded 200% of
rated current.)
Shaft rotation blocked.
Excessive driven load.
Input power is not correctly
wired to the unit.
Motor section ground fault.
Check for obstructions to shaft
rotation.
Reduce excessive load.
Increase accel / decel time
using the accel/decel rotary
switch (see section 8.2).
Verify input wiring is correctly
connected (see section 5.0).
Ohm out motor section to check
for ground fault. Replace motor
section if a ground fault is
detected.
Unit Overtemperature Operating environment is too
hot.
Blower is blocked or not
operating.
Excessive driven load.
Check the application site and
verify the ambient temperature
is within the operating
specification.
Check for blower obstruction.
Replace blower if required.
Reduce load or make sure unit
matches the application
requirement.
Table 11.1 – Fault Codes and Corrective Actions (Continued)
Fault
Code Fault Description Fault Cause Corrective Action