7-2
Diagnostics and Fault Finding
07-01-08-02-E-V0500 631 Digital Servo Drive
Display
Display
Display
Display Explanation
Explanation
Explanation
Explanation
Ready *
Ready *
Ready *
Ready *
(output X10.5)
Warning *
Warning *
Warning *
Warning *
(output X10.6)
Comment
Comment
Comment
Comment
Supply undervoltage
<Ua low threshold
off
off
Is the power supply present?
Status signal disappears, if DC-bus
voltage over the threshold.
Fault Supply undervoltage
<Ua low threshold
off
off
Is the power supply present?
Error signal appears, if DC-bus voltage
under the Ua low threshold.
Fault in resolver system
off
off
Is the encoder system supply present?
Is the wiring to the encoder system
ok?
Is the encoder system ok?
I²t overload of the drive
-
-
Does the control loop oscillate?
P-amplification too high
Mechanics stiff?
Requirements too high?
Is warning /8/
evaluated?
overload of the motor I²t
-
-
Does the control loop oscillate?
P-amplification too high
Mechanics stiff?
Requirements too high?
Is warning /8/
evaluated?
overtemperature of the output
stage
-
-
Adequate cooling of the regulator?
Is the ambient temperature too high?
overvoltage DC bus
-
-
Ballast module ok?
Adequate ballast module?
Chassis shorting and short
circuit due to hardware
off
off
Is the motor cabling ok?
Are the digital loops setup ok?
Is there a short circuit to chassis in the
motor?
Is the braking resistor Ohm value too
low?
•
Apply a toroidal core or choke in
motor-cable.
•
Try to restart
•
Return the unit for repair
WARNING!
O
verload of the regulator or
motor.
If no reaction within
approximately 3 seconds the unit
switches off with signals /3/, /4/
or /5/.
Signal /8/ clears when there is no
more danger or the unit is
switched off
on
****
Mechanics stiff?
Defective bearings;
Cold grease?
•
Reduce requirements and creep to
next possible STOP