14.2
SEL-400 Series Relays Instruction Manual Date Code 20171006
ASCII Command Reference
Command Description
89CLOSE
n
Use the 89CLOSE n command to close disconnect switches. (The number of
disconnects supported, n, depends on the relay.) The main board circuit breaker
jumper (on jumper BREAKER) must be in place.
NOTE: The SEL-487B does not
support disconnect control
operations.
If the disconnect switch is open and Relay Word bit LOCAL is deasserted, the
89CLOSE n command asserts Relay Word bit 89CLSn for the 89CSITn time.
See Disconnect Switch Close and Open Control Logic on page 5.1. If the Relay
Word bit 89OIPn asserts, indicating that the disconnect has started to close, the
relay displays
Operation in Progress... With Relay Word bit 89OIPn asserted
and Relay Word bit 89ALPn deasserted, a dot (.) is appended to the above mes-
sage every half second to show progress. While the operation is in progress, com-
munications are unavailable on the port where the 89CLOSE command was
executed. Assertion of Relay Word bit 89OIPn starts the 89ALPn alarm timer.
The relay waits for the 89ALPn timer to expire and then checks the status of the
89AMn and 89BMn disconnect inputs. If the 89ALPn timer does not expire
within 30 seconds, the relay exits the 89CLOSE command and reads the status
of the disconnect inputs. The state of Relay Word bits 89AMn and 89BMn deter-
mine which disconnect status message the relay displays (
Disconnect OPEN,
Disconnect CLOSED, or Status Undetermined - check wiring). Use the
89CLSn Relay Word bit as part of a SEL
OGIC Output control equation to close
the appropriate disconnect switch.
If the relay is disabled and you attempt an 89CLOSE n command, the relay
responds with
Command aborted because the relay is disabled. If the cir-
cuit breaker control enable jumper J18C (BREAKER) is not in place, the relay
aborts the command and responds,
Aborted: the breaker jumper is not
installed
.
When the 89CLOSE n command is issued and the circuit breaker control enable
jumper is in place, the relay responds,
CLOSE DISNAMn (Y/N)?. If you answer
Y <Enter>, the relay responds with
Are you sure (Y/N)?. If you answer Y
<Enter>, the command is executed. If the response to either prompt is not y or Y,
the relay responds with
Command Aborted.
89OPEN
n
Use the 89OPEN n command to open disconnect switches. (The number of dis-
connects supported, n, depends on the relay.) The main board circuit breaker
jumper (on jumper BREAKER) must be in place.
NOTE: The SEL-487B does not
support disconnect control
operations.
If the disconnect switch is closed and Relay Word bit LOCAL is deasserted, the
89OPEN n command asserts Relay Word bit 89OPENn for the 89OSITn time.
See Disconnect Switch Close and Open Control Logic on page 5.1. If the Relay
Word bit 89OIPn asserts, indicating that the disconnect has started to open, the
relay displays
Operation in Progress... With Relay Word bit 89OIPn asserted
and Relay Word bit 89ALPn deasserted, a dot (.) is appended to the above mes-
sage every half second to show progress. While the operation is in progress, com-
munications are unavailable on the port where the 89OPEN command was
executed. Assertion of Relay Word bit 89OIPn starts the 89ALPn alarm timer.
The relay waits for the 89ALPn timer to expire and then checks the status of the
89AMn and 89BMn disconnect inputs. If the 89ALPn timer does not expire
Ta b l e 1 4. 2 89CLOS E
n
Command
Command Description Access Level
89CLOSE n Set Relay Word bit 89CLSn B, P, A, O, 2
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