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This setting changes the mode of the Equalize Timer. The equalize timer mode determines when the charger
will go into an equalize charging cycle. The timer modes are Mode 0 (P0), Mode 1 (P1), Mode 2 (P2), Mode 3
(P3), and Mode 4 (P4). The default setting for the equalize timer mode is Mode 0 (P0). The Equalize Timer
Modes are discussed in further detail in Section 3.2.3.
EQ Timer Setting
This setting changes the amount of time that the charger remains in the equalize charging cycle once activated.
When an equalize cycle is started the charger will remain in equalize mode until the time selected by this setting
has passed. By default the Equalize timer is for 8 hours.
LCD Backlight
This setting changes the behavior of the LCD Backlight. By default the backlight is set to turn off two minutes
after the last key press on the display membrane. Alternatively the backlight can be set to always on.
Modbus Address
This setting changes the address of the Modbus. If the customer has purchased a Communication Card (Option
21P/21Q) this setting should be set to all in order to access further options of the communication card.
Scada Protocol (Modbus Address Set To All)
This setting changes the Protocol used by the accessory communication card (Option 21P, 21Q). This setting is
only available if “Modbus Address” is set to all. For more information refer to the Scada Interface with DNP 3.0
and Modbus instruction manual.
Node Address (Modbus Address Set To All)
This setting changes the node address used by the accessory communication card (Option 21P, 21Q). This
setting is only available if “Modbus Address” is set to all. For more information refer to the Scada Interface with
DNP 3.0 and Modbus instruction manual.
Scada Comm Port (Modbus Address Set To All)
This setting changes the communication port used by the accessory communication card (Option 21P, 21Q).
This setting is only available if “Modbus Address” is set to all. For more information refer to the Scada Interface
with DNP 3.0 and Modbus instruction manual.
Modbus Baud Rate
This setting changes the Modbus Baud Rate. The default baud rate is 9600. The baud rate of the A75D(E)
should be set to match the baud rate of computer that is connected.
3.6
Setting the Float Voltages
The float voltage adjustment is set at the factory at 2.17 V/C (LA), 2.25 V/C (VRLA) or 1.4 V/C (NC). The
adjustment potentiometer is located on the front panel of the unit. Do not make any adjustments unless the
equipment has been powered-up and the settings have been determined to be incorrect. Rotating the
potentiometer clockwise raises the float voltage and counterclockwise lowers the float voltage.
The approximate adjustable range is as follows:
2.02 – 2.40 V/C (LA) (VRLA)
1.29 – 1.55 V/C (NC)
3.7
Setting the Equalize Voltage
The equalize voltage adjustment is set at the factory at 2.33 V/C (Lead), 2.27 V/C (VRLA) or 1.55 V/C (NC). The
adjustment potentiometer is located on the front panel of the unit. Do not make any adjustments unless the
