FUJITSU PRIMEQUEST 1000 Series C122-E119EN - Manual (Page 105)

Signal name Pin Function
The length of the time from when the *ACOFF signal goes ON to when shutdown
processing actually starts can be specified from the MMB according to the operation. (*1)
The signal becomes valid when this line and GND (pin 5) are short-circuited.
GND 5 Common ground signal
*1: Shutdown Delay after UPS detected AC Failure: There is a possibility that the power failure detection signal
will be caused by a momentary power interruption. To be prepared for such cases, the maximum wait time until
shutdown can be specified (default value: 5 seconds).
PRIMEQUEST 1000 Series Hardware Installation Manual
APPENDIX B UPC Interface
85 C122-H004-07EN