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COMMUNICATIONS PORTS (RS232 and USB)
The RS232 communication port is a standard DB9 female with both RS232 and
simulated contact closure capability. The Enterprise 1U Rackmount Series
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 unit be turned off and restarted with the desired
cable connected. The pinout for the port is depicted per the chart below.
Pin 1: EPO Emergency Power Off (momentarily pull this pin low to completely
turn off the UPS in any mode. The UPS will have to be turned off and then
turned back on to restart the unit)
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
WEAK/BAD BATTERY
The UPS automatically tests the battery’s condition and will illuminate the Weak/
Bad Battery LED and sound the alarm. This alarm will be repeated until the
batteries pass a self test. If the battery is weak, bad or disconnected, the
Weak/Bad Battery LED will illuminate and the alarm will beep three times every
five-minutes until the battery is reconnected or replaced. It is recommended
that the UPS be allowed to charge overnight before performing a battery test to
confirm a Weak/Bad Battery condition.
NOTE: If the UPS has a Weak/Bad Battery Alarm after reconnecting or replac-
ing the batteries, the user must initiate a self test to clear the Weak/Bad Bat-
tery Alarm. To initiate a self test see section 4 "SELF TEST".
OVERLOAD
When the amount of load attached to the UPS exceeds its power rating, the
Overload LED will illuminate and the UPS will sound a constant alarm. This
alarm will remain on until the excess load is removed or the UPS’s self protec-
tion circuit shuts the UPS down.
POWER MONITORING SOFTWARE
The UPS comes with a MINUTEMAN Power Monitoring Software CD. See the
software CD for the installation of the MINUTEMAN Power Monitoring Software.
USB PORT
The USB port will support the MINUTEMAN Power Monitoring Software. See
the software CD for the USB installation.
OPTION SLOT
The option slot on the rear panel of the UPS will only support the MINUTEMAN
option cards.