Diagnostics; Faults; Servo Drive; Troubleshooting - Danfoss VLT Integrated Servo Drive ISD 510 System Operating Instructions Manual

Diagnostics

9 Diagnostics

9.1 Faults

If faults occur during servo system operation, check:
•
The LEDs on the servo drive for general problems
relating to communication or device status.
•
The LEDs on the SAB for general problems with
communication, auxiliary supply, or STO voltage.
The error codes can be read using the ISD Toolbox
software, the LCP, or the PLC. The LCP only shows faults
relating to the device it is connected to.
NOTICE
If the fault cannot be eliminated by 1 of the measures
listed in Table 9.1 or Table 9.3, notify Danfoss Service.
Have the following information available to enable Danfoss
to provide help quickly and effectively:
•
Type number
•
Error code
9 9
•
Firmware version
•
System set-up (for example, number of servo
drives and lines).

9.2 Servo Drive

9.2.1 Troubleshooting

First use Table 9.1 to check the possible causes of the fault
and possible solutions. The error codes are listed in
chapter 9.2.2 Error Codes.
Fault
LCP display dark
or has no
function.
74
VLT
Possible cause Possible solution
Missing input power. Check the input
power source.
Missing or open fuses Check the fuses and
or circuit breaker circuit breaker.
tripped.
•
No power to the LCP. Check the LCP
cable for proper
connection or
damage.
•
Replace any faulty
LCP or connection
cables.
Incorrect contrast Press [Status] +
▲ ▼
setting.
[ ]/[ ] to adjust the
contrast.
Display is defective. Replace the faulty
LCP or connection
cable.
Danfoss A/S © 12/2015 All rights reserved.
® ®
Integrated Servo Drive ISD
Fault
Servo drive
overheats (high
surface
temperature).
Servo drive not
running.
Servo drive does
not run or only
starts up slowly or
with difficulty.
Drive hums and
draws high
current.
Drive stops
suddenly and
does not restart.
Wrong motor
rotation direction.
Drive runs
normally, but
does not generate
the expected
torque.
Drive screaming.
Uneven running.
Vibration.
510 System
Possible cause Possible solution
Excessive load. Check the torques.
No drive communi- Check the fieldbus
cation or drive in connection and the
error mode. status LEDs on the
servo drive.
• •
Bearing wear.
•
Incorrect
parameter
•
settings.
•
Incorrect control
loop parameters.
•
Incorrect torque
settings.
Drive defective. Contact Danfoss.
•
No drive Check the fieldbus
communication. connection and the
status LEDs on the
•
Servo drive in
servo drive.
error mode.
•
Parameter error.
•
• •
Drive defective.
•
Parameter error.
•
• •
Incorrect
calibration.
•
Faulty current
•
measurement.
•
Incorrect control
loop parameters.
Defective bearing. Check the shaft.
• •
Defective bearing.
• •
Incorrect control
loop parameters.
Check the
bearings and
shaft.
Check the
parameter
settings.
Check the
parameter
settings.
Change the
rotation direction
if appropriate.
Check the
parameter
settings.
Contact Danfoss.
Check the
parameter
settings.
Contact Danfoss.
Check the shaft.
Check the
parameter
settings.
MG75K102