115 / 157V3.3 11.07.2007 KRC-AD-KRC2ed05-BA en
11. Troubleshooting
11.8 KPS-27 error messages
Overview The operating state is indicated by two LEDs on the front.
LED
11.9 Error messages on the KSD
Overview The operating state of the KSD is indicated by two LEDs on the front.
Brake error Ax/PMx
channel x
Brake error, main axes
Brakes not con-
nected
Short circuit on
brake cable
Brake error Ax/PMx
channel x
Brake error, external
axes
Brakes not con-
nected
Short circuit on
brake cable
Intermediate circuit
charging circuit defec-
tive PMx
Optocoupler for bal-
last resistor current
detection signals that
no current is flowing
Restart
Exchange KPS
K1 contactor welded
PMx
Main contactor K1
stuck
Exchange KPS
Display in message
window
Meaning / cause Remedy
Fig. 11-6: KPS-27 LED display
1 LED 1 (red) 2 LED 2 (green)
LED State Meaning
LED 2 (OK) Lit Normal operation
LED 1 (over-
load)
Lit Overload operation
Flashes slowly Short-circuit operation