User's Manual

32
6 Troubleshooting
Green LED (POWER.) does not light, axis does not move, no holding torque:
• -15V or +15V or +5V overloaded by external consumers or short-circuited.
• Fuse S1 is defective.
• External fuse to the power amplifier is defective.
Green LED (POWER.) lights, axis does not move, no holding torque:
• Interruption of the motor lines.
• Power amplifier enable is missing.
• Power amplifier enable took place but the device was not ready.
• Input Iextern is not wired.
• Input Pos.Stop and Neg.Stop are not wired.
Axis does not move, motor has several positions with holding torque during one
turn, with oscillating engagement when the motor is manually displaced:
• Wrong polarity of the motor.
• Wrong setting for number of motor poles
• Motor line interrupted.
• Wrong resolver connection or wrong adjustment of the resolver.
Axis traveling, weakly pronounced holding torque:
• Pulse current potentiometer in IImp left stop position.
No axis traveling, motor has no holding torque:
• No speed reference available.
• Motor shaft blocked.
Yellow LED (I
2
t) lights:
• Wrong adjustment of the potentiometer Ieff.
• Mechanical friction too large.
• Oscillations approx. 200Hz because of wrong adjustment of the potentiometer (ampl.).
• A hum on the input line.