Programming
CM-2201/CM-2202
7.1.6
High Current Alarm Continued
If
Proportional Control or Current Limiting is enabled, all
current measurements will be scaled to 100% power, based
on a constant resistive load, before being compared to the
alarm setpoint.
1. Display Mode: All
2. Range: Low Current Alarm to 30.0A, Off
3. Default: Off
7.1.7
Ground Fault Alarm
This value sets the Ground Fault Alarm setpoint. It must be
less than the ground fault trip setpoint. To disable this
alarm set the value to "Off'. When the Ground Fault Current
is
greater than or equal to this setpoint, the Ground Fault
Alarm is activated and a "GROUND FAULT ALARM" message
is added to the alarm stack. The alarm deactivates when
the Ground Fault Current falls below this alarm setpoint.
1. Display Mode: All
2. Range: 10 to Ground Fault Trip, Off
3. Default: 30mA
7.1.8
Ground Fault Trip
This value sets the Ground Fault Trip setpoint. It must be
greater than the ground fault alarm setpoint. Todisable this
trip alarm set the value to “Off’. When the Ground
Fault Current is greater than or equal to this setpoint, the
heatercircuitisde-energized, the Ground Fault TripAlarm
is activated and a “GROUND FAULT TRIP” message is added
to
the
alarm
stack.This
is
a
latching
alarm
and
trip.
When
the cause of the alarm has been corrected, the
circuit may
be energized by the manual reset function.
1. Display Mode: All
2. Range: Ground Fault Alarm to 500mA, Off
3. Default: 50mA
7.1.9
Low Voltage Alarm
This value sets the Low Voltage Alarm setpoint. It must be
less than the high voltage alarm setpoint. To disable this
alarm set the value to “Off’. When the Line Voltage is less
than or equal to this setpoint, the Low Voltage Alarm is
activated and a “LOW VOLTAGE ALARM” message is added
to the alarm stack. The alarm deactivates when the Line
Voltage rises above this alarm setpoint.
Low Voltage Alarm Continued
1. Display Mode: All
2. Range: 85VAC to High Voltage Alarm, Off
3. Default: Off
7.1.10
High Voltage Alarm
This value sets the High Voltage Alarm setpoint. It must
begreater thanthe Low Voltage Alarmsetpoint. To
disable this alarm set the value to “Off’. When the Heater
Voltage is greater than or equal to this setpoint, the High
Voltage Alarm is activated and a “HIGH VOLTAGE ALARM”
message
is
added
to
the
alarm
stack
messages.
The
alarm deactivates when the Heater Voltage drops below
this alarm
setpoint.
1. Display Mode: All
2. Range: Low Voltage Alarm to 280VAC, Off
3. Default: Off
7.2
Program- Heater Setup
7.2.1
Heater Setup
This message displays the name of the sub-menu when
entered.
1. Display Mode: Advanced
2. Range: N/A
3. Default: N/A
7.2.2
Enable Heater
This selection enables controlandmonitoring of the heater
circuit. Setpoints and measured value messages cannot be
accessed unless the heater is enabled. Select “No” if the
circuit is not used.
1. Display Mode: All
2. Range: yes, no
3. Default: yes
1
3
©201
7
Nelson Heat Tracing Systems
www.nelsonheaters.com
GA2497 Rev.
5
