Whisper Power Supreme WP-BC 12/100-3 User Manual page 13

For use with two charger units connected in parallel (same model number only):
• When having two chargers in parallel, the total current to the batteries is the sum of the
ones supplied by each one of the chargers. You can see that total current (the sum) as a
unique reading, by using the optional Remote Display. It also synchronizes both chargers
in order to keep the same charging stage and distribute their charging currents almost
equally, so that one charger will not work more than the other one.
• When using the optional Remote Display for two units in parallel, they have to be the same
model number (i.e. two WP-BC 12/100-3 chargers or two AC2450 chargers). Therefore,
the total charging current to the battery banks is doubled.
• In this case, an additional (not provided) 6-pin "rollover" RJ12 cable (maximum length 25
ft.) is required for a total of two cables.
• Install the two rollover RJ12 cables in your desired location.
• For the first RJ12 rollover cable, connect one end to the Remote Display Port of Charger_1
and the other end to Remote Display Panel COM_1 Port.
• For the second RJ12 rollover cable, connect one end to the Remote Display Port of
Charger_2 and the other end to Remote Display Panel COM_2 Port.
• The Remote Display is now ready for use.
Note 1: With AC Input power available, both Digital Displays will show 'CON' indicating
the two chargers are connected in parallel. The 'INFO', 'NEXT' and 'SET' push buttons on
both chargers are disabled. Use the Remote Display for charger unit setting. With no AC
Input available, pressing and holding the 'INFO' button on Charger_1 for at least 3 sec.
will show the battery voltage of Bank 1, 2, 3 and then follow with charger firmware revision
(e.g. "u1.0").
Note 2: The combined chargers setting is based on the original setting on Charger_1.
To readjust the combined charger setting, it has to be done through the Remote Display.
Before connecting the batteries to the chargers, Battery Bank 1 of Charger_1 has to
connect to Battery Bank 1 of Charger_2. Battery Bank 2 of Charger_1 has to connect to
Battery Bank 2 of Charger_2 and Battery Bank 3 of Charger_1 has to connect to Battery
Bank 3 of Charger 2. The Common Ground of both chargers has to be connected together.
Damage to both chargers may occur if the above connections are not followed.
Tips: During installation or unit setting, it is recommended to pre-set the desired charger
setting on Charger_1 first before connecting the second RJ12 cable to Charger_2, as
once Charger_2 is connected, all the three push buttons on the charger are disabled and
the display will only show 'CON' and the setting can only be adjusted by using the Remote
Panel.
Optional Battery Temperature Sensor (BTS) Connection:
For single charger operation:
• To install the temperature sensor, simply connect the RJ12 plug from the sensor to the
corresponding jack of the Temperature Sensor Port on the charger
• On the Temperature Sensor end, simply connect the ring terminal (lug) to the negative
WhisperPower Battery Charger 12 V 100 A 13