Programming
CM-2201/CM-2202
©2018 Nelson Heat Tracing Systems
www.nelsonheaters.com
GA2497 Rev.6
10
7.1.6
High Current Alarm
This value sets the High Current Alarm setpoint. It must
be greater than the low current alarm setpoint. To
disable this alarm set the value to “Off’. When the
heater current is greater than or equal to this setpoint,
the High Current Alarm is activated and a “HIGH
CURRENT ALARM” message is added to the alarm
stack. The alarm deactivates when the heater current
falls below this alarm setpoint. This setpoint is based
on the heater at 100% power.
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 va lu e 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. To disable this
trip alarm set the value to “Off’. When the Ground Fault Current
is greater than or equal to this setpoint, the heater circuit is
de-energized, the Ground Fault Trip Alarm 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
be greater than the Low Voltage Alarm setpoint. 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
Heater Enable
This selection enables control and monitoring 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: No
