Minuteman UPS Enterprise Plus Series user manual English, Self Test, Dipswitch Settings

English

SELF TEST

The self test feature is useful to verify the correct operation of the UPS and the condition of the batteries. With the UPS in the AC normal mode, press and hold the On/Off/Test Button for four beeps, then release the button. The UPS will perform a ten-second self test. During the self test, the UPS will switch to battery power and the On-Battery LED will illuminate and the audible alarm will sound. The length of the test that is automatically performed every two weeks is longer than the start-up or user invoked test. This test will run for approxi- mately fifteen-seconds to measure the battery’s capability to provide an ac- ceptable amount of runtime. If the UPS fails a self test, one of the LEDs will remain illuminated indicating the type of problem. NOTE: The UPS will auto- matically perform a self test on start-up and every two weeks.

DIPSWITCH SETTINGS

The dipswitch setting may be changed by the user to set the desired Inverter (On-Battery) output voltage. The dipswitch must be set to the desired Inverter (On-Battery) output voltage and then the UPS must be turned off and restarted to reconfigure the microprocessor and save the changes. The Inverter (On- Battery) output voltage setting can be either 120VAC (208VAC) default or 127VAC (240VAC). Changing the Inverter (On-Battery) output voltage to 127VAC, will also change the Buck setpoint. Changing the Inverter (On-Battery) output volt- age to 240VAC, will also change the Brownout, Boost, Buck and Overvoltage setpoints.

LOAD SHEDDING FUNCTION

The output receptacles are electrically wired into two segments to support the "Load Shedding Function". The user can control the two segments individually or both at the same time. The Load Shedding Function is controllable by the Power Monitoring Software or the SNMP card.

COMMUNICATIONS PORTS (RS232 and USB)

The RS232 communication port is a standard DB9 female with both RS232 and simulated contact closure capability. The 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: Simulated contact closure Low Battery Warning, NO

Pin 2: /TXD

Pin 3: /RXD and receive UPS shutdown command (connect to pin 9 for 4- seconds. The shutdown command is only active in the battery mode)

Pin 4: Not Used

Pin 5: Ground

Pin 6: Not Used

Pin 7: Not Used

Pin 8: Simulated contact closure AC fail, NO

Pin 9: Atx Signal (high level: +12V +/-2V, low level: -15V +/- -2V)

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