Minuteman UPS UPS User Manual
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COMMUNICATIONS PORT
The communications port is a standard DB9 female with both RS232 and
simulated contact closure capability. The SmartSine UPS will poll the port and
activate the port for RS232 or contact closure in accordance with the type of
cable it finds connected to the port. To change the port configuration requires
the UPS be turned off and restarted with the desired cable connected. The
pinout for the port is depicted below:
Pin 1: EPO Emergency Power Off (pull and hold this pin low to turn off the UPS)
Pin 2: /TXD
Pin 3: /RXD and receive UPS shutdown command
Pin 4: Simulated contact closure AC fail, NO
Pin 5: Ground
Pin 6: Simulated contact closure low battery warning, NO
Pin 7: Simulated contact closure AC fail, NC
Pin 8: AC fail signal (high to low signal)
Pin 9: Not Used
ALARMS
English
ON BATTERY
When the UPS is operating on the batteries, the On-Line LED will blink and the
audible alarm will sound once every 10 seconds. The alarm will stop once the
UPS returns to the On-Line operation.
UPS FAULT
When the UPS detects a hardware fault, the Fault LED will illuminate and the
UPS will emit a sustained tone. The fault condition, in some instances, may be
reset by turning the UPS OFF and then ON. (see section 5 Troubleshooting)
OVERLOAD
When the amount of load attached to the UPS exceeds its power rating, the
Overload LED will illuminate and the UPS will emit a sustained tone. This alarm
will remain on until the excess load is removed or the UPS’s self protection
circuit shuts the UPS down.
REPLACE BATTERY
The UPS automatically tests the battery’s condition and will illuminate the Weak/
Bad Battery LED and emit a short beep. This tone will be repeated every hour
until the batteries pass a self test. It is recommended that the UPS be allowed
to charge overnight before performing a battery test to confirm a Weak/Bad
Battery condition.
LOW BATTERY WARNING
The UPS will emit two consecutive beeps every five seconds when the battery
reserve runs low. This condition will continue until AC returns or the UPS shuts
down from battery exhaustion.