IMPULSE•G+Mini Advanced Instruction Manual – March 2014
6-3
Troubleshooting the Drive
In this troubleshooting section, “check” means investigating whether an item is functioning and in an
acceptable physical condition, and then taking corrective action (adjusting, fixing, replacing, etc.) as
necessary. In the Corrective Action column, you may not have to perform all of the steps to correct
the problem.
Maintenance and Inspection
This section describes basic maintenance and inspection procedures for the IMPULSE•G+ Mini.
Alarm and Fault classes are described as follows:
• Major Fault: Brake is set, ALM indicator LED remains lit, fault is displayed on keypad and
brake contact output (terminals MC, MB, & MA) is deactivated. In order to continue operation
the reset key must be pressed, a multi-function input set for fault reset or power must be cycled.
• Fault (minor): Brake is set, ALM/indicator LED flashes, fault code flashes in the keypad brake
contact output (terminals MC, MB, & MA) is deactivated. The reset key does not need to be
pressed. The drive will attempt to run again at the next run command.
• Alarm (Warning): Brake does not set, operation continues, ALM/indicator LED flashes, fault
code flashes, brake contact output (terminals MC, MB, & MA) stay activated.
Motor Faults and Corrective Actions
Component Check Corrective Action
External terminals, connectors,
mounting screws, etc.
Loose screws or connectors Securely tighten.
Heatsink Build-up of dust and dirt Blow with dry, compressed air (57-86 psi).
Printed Circuit Board (PCB) Accumulation of conductive dust
or oil
Blow with dry, compressed air (57-86 psi). If dust
and oil cannot be removed, replace the board.
Cooling Fan Abnormal noise and vibration Clean or replace the fan.
Power Components Accumulation of dust or dirt Blow with dry, compressed air (57-86 psi).
Symptom Corrective Action
Analog frequency reference is not stable (drifting). 1. Stabilize the analog source.
2. Increase B02.02.
3. Increase B05.01, B05.02.
No motor rotation. 1. Verify that power is on (Charge LED).
2. Verify that the keypad display is not showing a fault.
3. Verify that the run command is input to the drive (U01.10).
4. Check if motor stalled due to excessive current (U01.03).
Motor rotation is in the wrong direction. 1. Verify FWD/REV or UP/DN is wired correctly at the interface
card.
2. Switch any two leads on U/T1, V/T2, or W/T3 going to the motor.
3. Check parameter B03.04.