Summary of Operation

• Installed between the battery and battery charger (with fuse protection for

reverse polarity of charger or battery), the M-2035 measures battery voltage,

charge and discharge current, detects AC power loss, and sends the

measurements to the controller through the SATA communication interface.

• Continuously monitors charger voltage. Conducts scheduled battery load

tests on 12 and 24 V battery configurations while automatically disconnecting

and reconnecting the battery charger.

• During tests, module controls the battery load resistor via command from

the M-7679 R-PAC so that when the load resistor is turned on, it disconnects

the high side switch. Reconnects high side switch after load resistor is turned

off. Does not turn on load resistor if loss of main power is detected.

• When running on battery power, the M-7679 R-PAC commands the M-2035

module to enter low power mode if the battery voltage drops below “Vmin Bat”

setting, disconnecting the M-7679. Local or remote pushbutton provides “

wakeup from sleep” functionality. When pressed, the pushbutton releases

module from sleep and activates high side switch to reconnect the battery

and power supply.

• While in the sleep mode, the M-2035 module wakes up every 5 seconds to

measure voltage at Charger Input (TB4) to determine when main power

returns. Provides “wakeup” functionality when main power is restored.