Motor current overload protection is provided by the
CM-2 Board (electro-mechanical starters) and Liquid
Cooled Solid State Starter. The overload is a timed
function beginning at 105% of the Chiller Full Load
Amps. With software version C.OPT.05.07.xxx (and
later), there is also a motor current overload provided
by the microboard software. It also starts at 105% of the
chiller Full Load Amps and is adjustable over the range
of 12(default) to 40 seconds with the 105% MOTOR
CURRENT TIME Setpoint. When the motor current has
exceeded 105% of Chiller FLA continuously for the programmed
time period, a safety shutdown is performed
and “105% Motor Current Overload” is displayed on
the System Details Line of the Display.