Interface

External connections are made at two terminal blocks located on the rear

panel of the M‑2279D, and at two terminal blocks located on the printed

circuit board. These terminal blocks provide access to auxiliary functions,

including self-test alarm, user-programmable alarm, auto disable and manual

raise/lower. A fifth terminal block provides for the addition of the M‑0329B

LTC Backup Control. The four mounting studs, front door brace and the front

door locking knob must be saved from the existing control cabinet.

Features

Separate fuses for test terminal, voltage sensing and motor power are located

on the front panel. Spare fuses for each are in the fuse holder.

Binding posts on the front panel allow easy connections for test procedures.

RAISE/OFF/LOWER, AUTO/OFF/MANUAL and VOLTAGE SOURCE switches, DRAG

HANDS RESET button, and NEUTRAL LIGHT are standard.

NEUTRAL LIGHT will light to indicate that the regulator is in the neutral position,

for those regulators equipped with a circuit for this purpose.

The M‑2279D also includes an Input Voltage Circuit Breaker and Backup Alarm

Indicator.