Power Supply Conditions; Input Circuit - Fujitsu SPARC Enterprise M3000 Service Manual

Signal Line Definitions (Continued)
TABLE D-1
Signal Name
*ACOFF
SG
ER
(Equipment Ready)
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 at least 10 to 60 seconds after *BTL is turned on.
Note 2: Use a UPS that can normally supply power from the battery within 2 seconds of a momentary commercial power interruption
even if *ACOFF is not turned on.
D.4

Power Supply Conditions

TABLE D-2
D.4.1

Input Circuit

TABLE D-2
Signal Name
*BPS/*UALM
*BTL
*ACOFF
Limit the signal line chattering period to 1 ms.
D-4 SPARC Enterprise M3000 Server Service Manual • March 2012
Definitions
Indicates that a power failure has occurred in the
commercial power supply connected to the UPS.
Signal ground
Indicates that the server is operating
and show the power supply conditions of the UPC interface.
TABLE D-3
Input Power Supply Conditions
Input Conditions
No voltage relay contact
Contact rating DC 12 V, 10 mA or greater (0.5 A maximum)
Use of a gold-plated contact or reed relay is recommended.
Pin Number Remarks
9 Normal state: Off
Abnormal state: On
(Note 2)
5
1 Do not connect
anything to this pin.