No AC power

Blown power fuse(s)

Ensure power (115/230VAC single phase or 230 VAC three phase) is applied to the drive. 

Check for open circuits in the AC line fuses

No Bus power

Blown power fuse(s)

Make sure AC power is connected to the drive

Check for open circuit breakers in the AC line

Motor encoder wiring error

Incorrect motor selected in personality module

Inspect motor encoder wiring. Review Figure 6.36 on page 30 to verify connection of encoder power sense signals.

Choose the proper motor in ULTRA Master

The fuse on the I/O isolated +24VDC power supply has tripped. 

Check and replace fuse F1 if necessary. 

Check for short circuits on I/O or +24VDC output

The fuse on the encoder power output for the +5VDC power supply has tripped. 

Check and replace fuse F2 if necessary.

Check for short circuits on Encoder output signals or +5V output. 

Check that J4 pin9 or J5 pin9 is not connected to any external circuit. 

F3 Blown

Bad encoder 

Check for short circuits on the motor Encoder signals and cable wiring. 

Check and replace fuse F3 if necessary.

Motor TS+ (J2-19) and TS- (J2-20) pins open

Motor thermostat will trip due to: High motor ambient temperature and/or Excessive RMS torque

Verify TS+ (J2-19) and TS- (J2-20) connections for continuity.

Lower ambient temperature. Operate inside (not above) the continuous torque rating for the ambient temperature (40° Celsius maximum).

Motor cables shorted

Motor winding internally shorted

Drive temperature running too high

Operation above continuous power rating

Output short circuit or overcurrent

Ensure continuity of motor's power cable and connector. 

Check for short circuit on R, S, T, and Gnd windings. 

Check for a clogged or deffective fan. Ensure that cooling is not restricted by insufficient space around the unit. 

Ensure that ambient temperature is not too high (above 60° Celsius). Operate drive within the continuous power rating. 

Driver has a bad IPM, replace drive. 

Bad connection

Bad encoder

Ensure continuity of the encoder cable. Ensure continuity of the IM+ and IM- wiring signals. 

Replace the motor or Eencoder.

Bad connection

Bad encoder

Ensure continuity of the encoder cable. Ensure continuity of the BM+ and BM- wiring signals. 

Replace the motor or encoder.

Bad connection

Bad encoder

Ensure continuity of the encoder cable. Ensure continuity of the AM+ and AM- wiring signals. 

Replace the motor or encoder.

Check voltage level of the incoming AC power. 

Check main VAC power source for glitches or drop (below 90 VAC).

Install an uninterruptible power supply (UPS) on your VAC input. 

Excessive regeneration of power. When the drive is operated by an external mechanical power source, it may regenerate too much peak energy through the drive's power supply. The system will fault to save itself from an overload. 

Excessive AC voltage input

Output short circuit

Motor cabling wires shorted together

Internal motor winding short circuit

Change the deceleration or motion settings and/or reduce the reflected intertia of your mechanical system, or use a larger system (motor and drive).

Ensure input is below 264 VAC. 

Inspect for short circuits

Inspect for short circuits

Inspect for short circuits

Incorrect phasing

Bad Connections

Check the Hall phasing

Verify the Hall wiring

Excessive time at peak curent

Software parameter set too low

Insufficent bus voltage

Reduce acceleration rates. Reduce duty cycle (ON/OFF) of commanded motion. Increase time permitted for motion. Use a larger drive and motor.

Increase Average Current parameter to a more permissive setting.

Correct the under voltage condition or intermittent AC power, or install a larger size transformer. 

OVERSPEED parameter in the drive may be set too low for the application

Motor commanded to run above overspeed setting

Motor phasing is incorrect

Motor encoder phasing is incorrect

Using ULTRA Master (refer to Drive Parameters section) set Overspeed parameter to an acceptable range for the application. 

Reduce command from position controller or change velocity parameter in the position controller.

Inspect motor phasing

Inspect encoder phasing

Increase the feed forward gain to 100%.

Increase the following error window (refer to ULTRA Master Drive Parameters section). 

Retune the drive to reduce the following error. 

Increase the slwe limit window (refer to ULTRA Master Drive Parameters). 

Motor encoder encountered an illegal transition

Bad encoder

Replace the motor and/or encoder

Use shielded cables with twisted pair wires.

Route the feedback away from potential noise sources. Check the system grounds. 

Replace motor and/or encoder

Use shielded cables with twisted pair wires

Route the encoder cable away from potential noise sources

Fauly encoder - replace the encoder 

Check the ground connections

Reduce acceleration rates. Reduce duty cycle (ON/OFF) of commanded motion. Increase time permitted for motion. Use larger drive and motor. 

Select a motor that is in the drive. 

Update the motor tables in the drive.

Personality EEPROM is not compatible with the drive firmware

Hardware is malfunctioning.

Upgrade firmware