GE 889 Instruction Manual page 219

CHAPTER 4: SETPOINTS
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889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL
OPEN RELAY SELECT
Range: Off, Relay 1, ..., Relay X
Default: Off
This setpoints selects an output relay from the list of available output relays that is used
to open the Disconnect Switch once an open command is issued either from the front
panel or remotely. This output relay is controlled from the Switch Control menu.
CLOSE RELAY SELECT
Range: Off, Relay 1, ..., Relay X
Default: Off
This setpoint selects an output relay from the list of available output relays that is used
to close the Disconnect Switch upon issued close command from either front panel or
remotely. This output relay is controlled from Switch Control menu.
Refer to the section Output Relays
EVENTS
Range: Disabled, Enabled
Default: Enabled
This setting disables or enables the disconnect switch operation events.
TARGETS
Range: Disabled, Self-Reset, Latched
Default: Enabled
This setting disables or enables the disconnect switch operation Targets.
The logic for Switch configuration and the Open, and Close status is shown in the following
tables.
Table 4-20: Switch configuration with Open and Close status
Contact Input 89a Contact Input 89b
setpoint programming setpoint programming
Yes Yes
Yes No
No Yes
No No
Table 4-21: Switch status with both contacts 89a and 89b programmed
89a Contact Status
Off
On
On
Off
for details on output relay selection availability.
Switch Status
Open
89a contact open
89b contact closed
89a contact open
89b contact closed
Not Configured
89b Contact Status
On
Off
On
Off
SYSTEM
Closed
89a contact closed
89b contact open
89a contact closed
89b contact open
Disconnect Switch Status
SW[X] Opened
SW[X] Closed
SW[X] Intermittent, SW[X]
Discrepancy
4–89