Monitoring Relays - ABB Q951 User Manual

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
1 Potentiometer or adjustment failure
2 Line fault across start button
3 Wiring fault
4 Simultaneity error
For more information, see the data sheet of the relay (www.dold.com).
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:
LED
PWR 1
PWR 2
ERR
This table gives the indications of the MCR-SL-NAM-R-SP relay:
LED
PWR
OUT
LF
For more information, see the data sheets of the relays (www.phoenixcontact.com).
Color
Green
Green
Red
Color
Green
Yellow
Red
Status indication
Supply voltage
Supply voltage
Error
Status indication
Power supply (on during normal operation)
Switching state
Line fault
Fault tracing 49