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MX28B-1200 PRODUCT MANUAL Revision B
28 MX28B-1200/2400
5.9 Battery Temperature Probe Installation
The optional temperature probe is used to monitor the battery string temperature. To get the
most representative temperature measurement, the probe should be placed in contact with a
battery cell that is centrally located. The probe should be placed directly in contact with the cell
(not the frame surrounding the cell). Generally, the cell cover can be used; be careful not to
allow the probe body to touch the terminals.
1) Plug the connector end of the temperature probe into J5 the control unit interface card in
the base power bay.
2) Route the cable as required to position the probe on the selected battery cell
3) Remove the adhesive protection strip from the probe body and press the adhesive side of
the probe on the battery cell cover.
BATTERY
TEMPERATURE
PROBE CABLE
APC PART
NUMBER
15 ft. (4.6m) FFA-0013-1
50 ft. (15.2m) FFA-0013-2
Table 5-6 Temperature Probe Cables
5.10 Power-Up and Checkout
Before initiating power-up and checkout, ensure that the following conditions exist:
1) Make sure that the external circuit breaker protecting the cables from the battery to the
power plant is turned OFF (the battery cables should be connected to the power plant, but
the battery should not
be connected).
2) Make sure that all load circuit breakers are turned OFF and all load distribution fuses are
removed.
3) Verify that all rectifiers have been installed.
5.10.1 Apply AC Power
Turn on the circuit breakers that supply ac power to the rectifiers in the MX28B dc power plant.
The main screen should appear on the control unit display (see Figure 5-11). The display on the
control unit is a 2-lines by 16-characters display. The cursor cycles below the characters of the
active selection on the display. Information shown in the second line of Figure 5-11 that extends
beyond 16 characters (to the right of the “S” in “ALARMS”) can viewed on the control unit
display by using the scrolling controls (refer to Section 6 for operation of the control unit).
NOTE: When ac power is initially applied, there is a 60-second period during which no
alarms are reported.