GE MI-869 Instruction Manual page 196

SYSTEM
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CONTACT INPUT 52b
Range: Off, Any Contact Input
Default: Off
Select the contact input connected to the breaker or contactor auxiliary contact 52b.
CONNECTED
Range: Off, Any Contact Input
Default: Off
Select a contact input to show whether the breaker or contactor is connected (Racked-
in, or disconnect switches switched-on) or disconnected (racked-out, or disconnect
switches switched-off) to the system.
CLOSE RELAY SELECT
Range: Off, Relay 2
Default: Off
Selection of Relay 2 assigns the START command to Output Relay 2 (CLOSE/AUX).
If "Relay 2" is selected, Auxiliary Relay 2 is not available for selection in any element in the
869. If "Off" is selected, Auxiliary Relay 2 is available for selection in all elements with
auxiliary relay selection in the 869 and it is not activated by the START command.
The logic for breaker or contactor configuration and the Open/Close status is shown in the
tables below:
52a Contact 52b Contact
configured configured
Yes Yes
Yes No
No Yes
No No
Breaker or contactor status with both contacts 52a and 52b configured:
52a Contact 52b Contact
configured configured
Off On
On Off
On On
Off Off
The following logic diagram shows the detection logic for breaker and contactor.
Figure 4-17: Breaker/Contactor State Detection logic diagram
Breaker or Contactor Status
Open
52a contact open
52b contact closed
52a contact open
52b contact closed
Breaker or contactor not configured
Breaker or Contactor Status
Breaker or contactor open
Breaker or contactor closed
Breaker or contactor unknown state
Breaker or contactor unknown state
869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 4: SETPOINTS
Closed
52a contact closed
52b contact open
52a contact closed
52b contact open