M&M
R
EFRIGERATION
I
NC
. 3-45
Chapter 3: Operational Procedures
Motor Current Setpoints
The Motor Current Setpoints screen is used to set the motor current control parame-
ters for high alarm, limiting, and ramp conditions.
Motor Current Setpoints Data Entry Screen
The following table lists the data entry fields for the Motor Current Setpoints
screen
.
Motor Current Data Definitions
MOTOR CURRENT
day mm/dd/yy hh:mm:ss
SETPOINTS
HIGH FAILURE XXX.X PSIG
HIGH ALARM XXX.X PSIG
HIGH UNLOAD XXX.X PSIG
HIGH LIMITING XXX.X PSIG
RAMP UNLOAD XXX.X PSIG
RAMP LIMITING XXX.X PSIG
RAMP START DELAY XXX.X MIN
RAMP START ENABLE DISABLE
TERM DEFINITION RANGE
HIGH
FAILURE
A failure is reported and the compressor is shutdown when
the Motor Current exceeds the High Failure Setpoint.
0 - 2000 AMPS
HIGH
ALARM
An alarm is reported when the Motor Current exceeds the
High Alarm setpoint.
0 - 2000 AMPS
HIGH
UNLOAD
The compressor is forced to unload when this value is
exceeded.
0 - 2000 AMPS
HIGH
LIMITING
The compressor is not allowed to load when this value is
exceeded.
0 - 2000 AMPS
RAMP
UNLOAD
The starting value of the forced unload parameter used dur-
ing ramp start.
0 - 2000 AMPS
RAMP
LIMITING
The starting value of the limiting parameter used during
ramp start.
0 - 2000 AMPS
RAMP START
DELAY
The time delay after the compressor starts where Motor Cur-
rent ramping occurs.
0 - 60 MIN
RAMP START
ENABLE
Allows Motor Current Ramp start to be enabled or disabled.
ENABLE/
DISABLE