If there are external errors, the K1/K2 LED shows an error code by flashing. This figure
describes the K1/K2 LED indications.
1
2
3
4
Potentiometer or adjustment failure
1
Line fault across start button
2
Wiring fault
3
Simultaneity error
4
For more information, see the data sheet of the relay (
To reset the emergency stop safety relay [A61] after fault situations, switch off the external
power supply of the relay and then switch it back on.
Monitoring relays
The monitoring relay types are:
• main monitoring relay [A641]: Phoenix Contact MCR-PTB-SP
• push button monitoring relays [A642…A64x]: Phoenix Contact MCR-SL-NAM-R-SP.
This table gives the indications of the Phoenix Contact MCR-PTB-SP relay:
Status indication
Color
LED
Supply voltage
Green
PWR 1
Supply voltage
Green
PWR 2
Error
Red
ERR
This table gives the indications of the MCR-SL-NAM-R-SP relay:
Status indication
Color
LED
Power supply (on during normal operation)
Green
PWR
Switching state
Yellow
OUT
Line fault
Red
LF
For more information, see the data sheets of the relays (
).
Fault tracing 49