MPS Doc: M359_USER_MANUAL REV G January 17, 2010 Page 12 of 30
5. Operating the M359
5.1. General
The UPS will not turn-on with Battery power alone. Therefore, to enable a UPS turn-on, AC
Input must be presented at the UPS Input connector J1 and the Input UPS/By-Pass switch
must be in the UPS position.
If the Remote Switches function is not used, please verify that a mating connector is plugged
into J4 (on the rear panel of the Unit) and that it has two jumpers: one between Pin 8 to Pin 4
and the other between Pin 5 to Pin 6. (The UPS is shipped with the mating connector and the
jumpers already installed on J4).
5.2.
Modes of Operation.
The M359 has five distinct modes of operation: Off, UPS Mode, By-Pass Mode, Stand-By
Mode and UPS Test Mode. These modes are described below.
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5.2.1.
UPS Mode.
This is the normal operating mode of the M359. In the UPS Mode all of the UPS
functions are enabled and the AC Output is a clean, regulated and protected,
115Vac/60Hz power, generated by the M359 DC-to-AC Inverter. In this mode, the
internal Battery supports the AC Output and failures on the AC Input will not propagate
to the output.
To enter the UPS Mode
(after all electrical connections are made and AC Input power
is available):
Via the front panel:
Turn On (up) the Output UPS/By-Pass switch (8), the Input UPS/By-Pass switch (7) and
only then turn On the PWR ON/OFF switch (2).
Via the Remote Switches:
Select UPS on the RMT UPS/By-Pass selector and only then turn On the RMT PWR
ON/OFF switch. (See Paragraph 7.4 for description of the Remote Control Switches).
When the M359 is in the UPS mode the INPUT OK green LED (20), the OUTPUT OK
green LED (21) and the Battery Charge Level Bar-graph (29) should be on. If the
Battery charge level is below 35%, the LOW BATT Warning yellow LED (14) may blink.
If the Battery is not fully charged, the upper bar of the BATT CHARGE indicator will
blink, signifying that the Charger is active. The Load Level Bar-graph indicator (13) will
show the loading on the UPS output.
