The factory high voltage setting is 125% of nominal EQUALIZE voltage for lead acid batteries (15.2VDC for 12VDC battery, 30.4VDC for 24VDC battery).
6.2. ALARM CONTACTS The factory voltage setting is 95% of nominal FLOAT voltage for lead acid batteries (12.
8VDC for 12VDC battery, 25.6VDC for 24VDC - Shown with charger in normal operation (float mode). - Rated 0.5A @ 110VAC, 2A @ 24VDC, Form "C". -
Connections to contacts are made to Terminal Block mounted on APB 1210 Printed Circuit Board.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 Equalize 2 Low Battery Voltage 1 High Battery Voltage 2 AC Fail 1 SCR Fail Not Used 1 2 Relay contacts
shown in de-energized (non-alarm) state (relays pick-up upon alarm condition). Relay contacts shown in de-energized (alarm) state (relay energizes upon
normal state and drops out on failure). PM004 Rev 2 00/09/21 5 Thomson Technlogy Inc. BCM 1220 BATTERY CHARGER 6.3.
CONTROL SECTION NOTE: When the APB 1210 control section is provided, the standard "FLOAT/EQUALIZE" switch on the charger upper faceplate is
relabelled to "FLOAT ONLY/AUTO MODE". With this switch in the "FLOAT ONLY" position, the control section of the APB module is effectively bypassed
and the charger will only float charge the battery. With this switch in the "AUTO MODE" position, the charger is controlled by the APB module. With the
APB 1210 removed, the switch reverts to standard Float/Equalize functions. This is provided to allow servicing of the APB module and retain use of the
battery charger. 6.3.1. Float Mode Control Operation of the pushbutton in this section called "return to float" will cause the charger to return to float, from
the equalize mode as indicated by the green "FLOAT CHARGING" L.E.
D. This will bypass the remaining duration of the equalize timer, and allows the operator to test the equalize mode, without going through a full time period.
6.3.2. Equalize Mode Control Equalize mode may be initiated by depressing the manual start button until the yellow L.E.D. (Equalize timer running light)
illuminates. Equalize mode may also be optionally initiated by the following, as indicated by the labeling on the APB faceplate: 6.
3.2.1. Automatic Period Timer Factory set for once every 28 days unless otherwise specified. 6.
3.2.2. Battery Voltage Dip Factory set at 75% of nominal battery voltage. 6.
3.2.3. Return of AC power supply. 7. CONNECTION OF LOOSE APB TO BCM BOARD Insert all the way down the header female connector of APB Board
into the six pin white male connector of BCM Board. Note: APB header female connector can plug in only in one direction. NOTES: 1) It is recommended that
adjustments to the APB 1210 be done at the factory only, since instruments are required. 2) The equalize period is the same for all methods of initiating.
Factory setting is 6 hours unless otherwise specified.
PM004 Rev 2 00/09/21 6 Thomson Technlogy Inc..
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