Setting up the digital input for external excitation

Follow the directions below to change the digital inputs’ setting to use an external power supply.

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E in the USA, CSA Z462 or applicable local standards. Turn off all power supplying this device and the equipment in which it is installed before working on the device or equipment. Always use a properly rated voltage sensing device to confirm that all power is off. Components inside the meter are extremely sensitive to electrostatic discharge. Use anti-static precautions when working inside the unit. Failure to follow these instructions will result in death or serious injury.

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E in the USA, CSA Z462 or applicable local standards.
Turn off all power supplying this device and the equipment in which it is installed before working on the device or equipment.
Always use a properly rated voltage sensing device to confirm that all power is off.
Components inside the meter are extremely sensitive to electrostatic discharge. Use anti-static precautions when working inside the unit.

Failure to follow these instructions will result in death or serious injury.

Disconnect and lock out power. Use a properly rated voltage sensing device to confirm power is off.
Remove the meter chassis from the meter case and set it on a sturdy anti-static work area. See the procedure outline in “Step 1: Switchboard case installation”.
Using a #2 Phillips screwdriver, loosen by one turn the two rear hinge screws (A).
Remove the two front retaining screws (B) and set them aside.
Carefully tilt open the meter chassis. The excitation pins and jumpers are in a recessed cavity on the bottom left of the meter.
Remove both jumpers and place one jumper on pins 2 and 3 of the four-pin header. Keep the second jumper for future use.
Reassemble the meter chassis, reinstall the retaining screws and tighten the hinge screws.
Reinstall the meter chassis in the case. Refer to the procedure outline in “Step 1: Switchboard case installation”.

Onboard digital input internal excitation is now disabled; an external supply can be used for external contacts. See the specifications table, “Onboard I/O” for details.