Lakeshore Learning Materials 642 User Manual
Page 104
Lake Shore Model 642 Electromagnet Power Supply User’s Manual
7-12
Service
7.10.3 Auxiliary
Connector
The Auxiliary Connector provides connections for three functions:
1. Emergency Stop – This normally-closed circuit turns off power to the Model 642 just as if the OFF (O) button was
pressed on the front panel when opened. Normal operation requires a closed connection between the pins.
2. Fault Relay – The fault relay can be used to communicate the presence of a Model 642 fault to external equipment.
The relay follows the operation of the Fault light on the front panel. Both normally-open and normally-closed
configurations are provided. The contacts are electrically isolated from the Model 642 chassis.
3. Remote Enable – These contacts are similar in function to the flow switch inputs. Normal (enabled) operation
requires a closed connection between the pins.
1
8
Pin Name
1 Emergency
Stop
A
2
Emergency Stop B
3 Chassis-common
4 Fault-NO
5 Fault-Com
6 Fault-NC
7 Chassis-common
8 Remote
Enable
Figure 7-9. Auxiliary Connector Details