Parker 631 Digital Produkthandbuch Seite 60

7-2
Diagnostics and Fault Finding
Display Explanation
Supply undervoltage
<Ua low threshold
Fault Supply undervoltage
<Ua low threshold
Fault in resolver system
I²t overload of the drive
overload of the motor I²t
overtemperature of the output
stage
overvoltage DC bus
Chassis shorting and short
circuit due to hardware
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
Ready * Warning *
(output X10.5) (output
X10.6)
off off
off off
off off
- -
- -
- -
- -
off off
on *
Comment
Is the power supply present?
Status signal disappears, if DC-bus
voltage over the threshold.
Is the power supply present?
Error signal appears, if DC-bus voltage
under the Ua low threshold.
Is the encoder system supply present?
Is the wiring to the encoder system
ok?
Is the encoder system ok?
Does the control loop oscillate?
P-amplification too high
Mechanics stiff?
Requirements too high?
Is warning /8/
evaluated?
Does the control loop oscillate?
P-amplification too high
Mechanics stiff?
Requirements too high?
Is warning /8/
evaluated?
Adequate cooling of the regulator?
Is the ambient temperature too high?
Ballast module ok?
Adequate ballast module?
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
Mechanics stiff?
Defective bearings;
Cold grease?
• Reduce requirements and creep to
next possible STOP
631 Digital Servo Drive