Installation manual

Geo Direct PWM Amplifier
Troubleshooting 51
Display
Code
Error / Fault
Description
Troubleshooting
Notes
GLOBAL
Normal Mode
Operation
 No faults reported
Over
Voltage
 The bus voltage has exceeded the permissible threshold:
420 VAC for GPL Drives
820 VAC for GPH Drives
 Make sure that the external shunt is connected properly.
 Make sure that the AC input is not excessively over spec.
Under
Voltage
 No bus voltage input.
 Bus voltage has dropped below the permissible threshold (97 VAC).
Shunt
Regulator
 Shunt resistor leads or pins shorted.
 Internal shunt regulator resistor failure.
Ground
Short
 Motor leads shorted.
 Shunt resistor leads or pins shorted.
Gate
Driver
 Motor leads shorted
 Shunt leads or pins shorted
 Gate driver (internal) failure.
Line
Monitor
 AC line voltage is low or not present.