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TROUBLESHOOTING
D SERIES CONTROLLER
TROUBLESHOOTING AND COMPONENT REPLACEMENT
1-40 August 9, 2005
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ERROR CODE D1512 Brake line error for JtXX.
This error occurs when the 1KB board detects an error signal sent from the brake re-
lease control MOSFET on the 1KQ/1NR board.
Transformer Circuit breaker
MOSFET
Voltage
monitoring
1KP board
Motor
1KB board
Robot
Controller
Safety circuit
Brake power supply error signal
Brake release signal
Brake line error signal
1KQ/1NR board
+24 VDC
Brake power supply D3X
Brake power supply D7X
Motor brake line
Brake line errors are not detected during motor power OFF. Brake line disconnection is
not detected during automatic operation. Brake line error detection timing is shown in
the diagram below.
Motor power
Servo control
Brake release
ON
START
RELEASE
Disconnection
detected
Short-circuit
detected
Main causes include:
1. Disconnection/short-circuit/ground fault/poor connection at the brake line axis motor
harness.
2. Defective connection for the brake power line.
3. Defective connection or harness between the 1KB and 1KQ/1NR boards.
4. Defective connection or harness between the 1KB and 1KX/1NX boards.
5. Defective connection or harness between the 1NR and 1NX boards.
6. Incorrect 1KP board safety circuit setting.
7. Defective 1KB or 1KQ/1NR board.
⇒
Check for disconnection or short-circuit in the motor harness, and repair or replace as