MPS Doc: M359_USER_MANUAL REV G January 17, 2010 Page 24 of 30
Connector J3 Pin Assignment
PIN I/O DESCRIPTION NOTES
1 O Fault Detect Signal Low (1)
2 O Fault Detect Signal High (1)
3 I Remote Shutdown (2)
4 O Not Battery Operation (3)
5 System Common Ground
6 N.C.
7 O Battery Voltage Low (4)
8 O UPS On (5)
9 O Input Power Loss, Battery operation (3)
Notes:
1. Pin 1 will be shorted to pin 2 when any one of the following conditions occurs:
an Over Temperature Condition, a Battery Failure, a Charger Failure, an Internal
UPS Controller Failure.
2. If the UPS is running on Battery power, connecting 8.1î3.9Vdc between Pin 3 (+) to
Pin 5 (-) will cause the UPS to shutdown (latched). If the UPS is running on AC
input, applying the voltage between Pin 3 and 5 will cause the UPS to enter the
Standby Mode (Ac output is off, all other functions are on.) Note: for Special Option
Units M359-1-X-2 this pin has different function (see MPS Doc M359-1-X-2_SP).
3. When the UPS operates on battery power, Pin 9 will be shorted to Pin 5 and pin 4
will be open. Otherwise (normal AC input), Pin 4 will be shorted to Pin 5 and Pin 9
will be open.
4. If the Battery Charge level is low, Pin 7 will be shorted to Pin 5. Otherwise, Pin 7 will
be open.
5. If the UPS output is OK, Pin 8 will be shorted to Pin 5. Otherwise, Pin 8 will be open.
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