Applicable Systems
ATV320
ATV340
ATV630
ATV930
Symptoms
Schneider ATV320 compact drive reports fault during normal operation indicating drive system issue requiring diagnostic evaluation.
Possible Causes
- Output phase loss detection indicating motor cable or contactor fault
- Motor overload protection trip based on thermal model calculation
- Brake control logic error during deceleration ramp
- Analog output signal fault on speed feedback channel
Troubleshooting Steps
- Step 1: Read fault code on ATV320 integrated display
Fault code shown on 7-segment display - Step 2: Check motor cable connections at drive output
All three phase terminals tight with no signs of arcing - Step 3: Verify motor overload protection settings
Motor FLA setting matches nameplate rated current - Step 4: Test brake control relay output with multimeter
Relay output toggles correctly with brake command
How to Reset
Reset by: 1) Correct the fault condition. 2) Cycle power or press RESET. 3) Run test. 4) Verify normal operation.
Common Replacement Parts
- ATV320-CTL-01: Schneider ATV320 control board (Verify frame size and voltage rating)
Frequently Asked Questions
- Q: How is motor overload protection configured?
Motor overload protection is configured by entering the motor rated current from the nameplate into the drive parameter menu. The drive calculates thermal capacity based on the FLA, service factor, and cooling method. Class 10 or Class 20 trip characteristics can be selected based on motor design.
Source: Schneider ATV320 Programming Manual
Category: Electrical