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TROUBLESHOOTING
D SERIES CONTROLLER
TROUBLESHOOTING AND COMPONENT REPLACEMENT
1-30 August 9, 2005
K
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ERROR CODE D1501 Defective gun changer connection or encoder comm. error.
This error occurs when the servo weld gun is connected and encoder data is not read
normally within the specified time.
Main causes include:
1. Improper connection at the tool changer.
2. Defective encoder or encoder communication line.
⇒
Check tool changer connection and repair as necessary
.
⇒
Check encoder and encoder harness and replace as necessary.
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ERROR CODE D1502 Amp over current JtXX.
The feedback current from a current sensor in the power block exceeded 150% of the
maximum instantaneous motor current rating.
Robot
Motors
Current
sensor
1GM board
I/V
converter
HIC
(Over current
detection)
Gate
Array
IPM
Controller
Power block
PWM
Over current
error signal
Current
feedback
1KB Board
U, V, W
earth
Main causes include:
1. Short in the U, V, W from the power block to motor and ground wire.
2. Defective motor.
3. Defective power block.
4. Defective 1KB servo board, harness, etc.
⇒
Check the connection for the U, V, W and ground line to the power block. Replace the
separation harness if necessary.
⇒
Replace the motor, 1KB board, power block, or harness.
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