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Appendix D UPS Controller D-3
On: Indicates that the contact is closed.
Off: Indicates that the contact is open.
Note 1: Use a UPS that can normally supply power from the battery for at least 10 to 60 seconds after *BTL is turned on.
Note 2: Use a UPS that can normally supply power from the battery even if *ACOFF does not turn on in the event of an instantaneous power failure
lasting two seconds or less.
*ACOFF Signal indicates power failure at the commercial AC
supply connector to the UPS.
9Normal: OFF
Failure: ON
(Note 2)
SG Signal ground 5
ER Signal indicates the main unit is running (Equipment
Ready).
1 Do not connect to ER
signal pin.
TABLE D-1 Signal Line Definitions (Continued)
Signal Name Definitions Pin Number Remarks