10
To use your dry contact output fail relay you must connect a 9-pin D connector to the unit. You
must use pins one and six as is indicated on page 10 in the remote connector diagram.
The relay is factory preset to fail in the closed position when the low output LED and buzzer
come on. If you wish to have the relay fail in the open position when the low output LED and
buzzer come on, you must take the cover off the unit and move the jumper to the other posi-
tion on J22. J22 is located next to the relay.
To change the position of the jumper, first turn the unit off and disconnect the unit from both
the power and batteries. Next, turn the unit on for 30 seconds to discharge the capacitors,
then turn it off again. Remove the eight screws holding on the cover. Turn the unit upside
down, remove the cover and locate J22. It will be next to the relay as is shown in the above
diagram. Simply move the jumper to the desired position as is shown in the above diagram.
Replace the cover and re-install the eight screws. Reconnect the unit to the power and batter-
ies.
BATTERY TEMPERATURE SENSORS
Up to 2 battery temperature sensors can be connected to the charger to allow temperature
compensation of the battery charging voltage (1 is supplied with the unit). If only the 1 sensor
is used, it MUST be plugged into the ‘BATT 1’ connection on the side of the unit. If no sensor
is used, the charger will default to standard output voltage.
For installation instructions of the temperature sensor, please see the section entitled
Remote Battery Temperature Sensor Installation.
Dry Contact Relay
