Fault Finding; Troubleshooting - Parker 512C Series Technical Manual

F F
AULT INDING

Troubleshooting

PROBLEM
No "Power On" LED 2
Illuminated
Motor will not run at
Switch On
Motor Runs and Stops
after short
period with "Stall" LED1
Illuminated
Motor runs at Full Speed
only
Motor runs with Zero
Setpoint.
Motor Speed
Oscillating
512C Series Converter
POSSIBLE CAUSE
No Supply Available
Incorrect Supply Voltage
Applied to Controller
Start/Run Signal not present
No Speed Setpoint
No Armature Current
No Field
Motor Jammed
Incorrect Current Limit Setting Check P4 setting
Incorrect Current Calibration
Motor Jammed
Incorrect Feedback Voltage
Calibration
Maximum Controller Output
Exceeded
Faulty Tachogenerator and/or
Coupling.
Incorrect Tachogenerator
Polarity or Open Circuit
Tachogenerator
Open Circuit Speed Setpoint
Potentiometer
Minimum Speed Setting
Zero Speed Offset Adjustment Adjust P8 to give Zero Speed
Stability P3
IR Compensation P5
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REMEDY
Check Supply Availability and Supply Fuse fitted or
Circuit Breaker closed.
Check Supply Voltage and Transformer Tapping
position are compatible.
Check Control Circuit Wiring
Check Total Setpoint terminal 12. Check Setpoint
Potentiometer & Wiring
Check P4 adjustment & External Current Limit
Potentiometer setting & wiring (if used)
Check Field AC Supply and Field connections
Free Obstruction
Check external current limit setting
Check Programming Switches SW5,6,7
Free Obstruction
Check Feedback Voltage Calibration Switches SW1/2.
Note These Switches must be set for both
Tachogenerator & Armature Voltage Feedback
Check compatibility of Motor Voltage to Controller
Output Voltage
Check Tachogenerator (use Armature Voltage
Feedback Temporarily)
Check Tachogenerator viability and connectivity
Check Terminal 13 or 10 as appropriate
Check Minimum Speed Potentiometer P6
Reduce P3
No IR compensation for Tachogenerator Feedback.
Reduce P5 for Armature Voltage Feedback
7-1

Fault Finding