CM-2201/CM-2202
Programming
©2018 Nelson Heat Tracing Systems
www.nelsonheaters.com
GA2497 Rev.6
11
7.2.3
Heater ID
This selection allows for user defined Heater
Identification. It provides a unique, identifiable tag or label
for each heater circuit. The Heater Name allows up to 16
alphanumeric characters which are entered one at a time
from left to right. The cursor indicates which character is
being selected. Press the [SELECT UP/DOWN] arrow keys
to change the character. Move to the next character by
pressing [NEXT] arrow. Press [ENTER] in the last character
position to save the Heater ID.
1.
Display Mode: Advanced
2.
Range: 16 Characters (CM-2201)
12 Characters (CM-2202)
3.
Default: Blank
7.2.4
Heater Type
This selection allows the user to set which type of
heating cable is being used. Self regulating heating cable
should not be used with proportional control, soft-start
mode, or Power limiting; for this reason these options
are unavailable when heater type is set to self
regulating. When heater type is set to fixed resistance all
control options are available. Display Mode: Advanced
1.
Display Mode: Advanced
2.
Range: Self Regulating, Fixed Resistance
3.
Default: Fixed Resistance
7.2.5
External Disable
This selection sets the response of the heater circuit to the
Override inputs. The Override inputs respond to contact
closure. If the Override is set to “Disable”, the override inputs
are ignored, and control of the heater circuit operates
normally based on the measured temperature and maintain
temperature setpoint. If the Override is set to
“Enable”, an open contact on the override inputs forces
the heater Off. When the contact on the override input is
closed, the heater control resumes in normal manner.
1.
Display Mode: Advanced
2.
Range: Enable, Disable
3.
Default: Disable
7.2.6
Deadband
The Deadband is defined as the difference between the set
point temperature and the actual maximum temperature
that is ideally allowed in excess of the setpoint
temperature Decreasing the deadband increases the
temperature control accuracy but also increases the heater
switching frequency.
1.
Display Mode: Advanced
2.
Range: 1 C° to 5 C°, 1 F° to 10 F°
3.
Default: 2 C° or 5 F°
4.
Note: Deadband is disabled for Proportional
Control mode.
7.2.7
Control Type
This selection determines the type of control
method used by the controller, either On-Off (Deadband)
or Proportional Control. The On-Off control mode is
available for all heating devices. Proportional Control
mode is only available for series type heating
devices.
1.
Display Mode: Advanced
2.
Range: On-Off, Proportional
3.
Default: On-Off
4.
Selection does not exist if Heater type is set to
Self regulating.
5.
Selection does not exist if Maintain Temperature
is set to Off.
7.2.8
Power Limit
This selection sets the maximum average current limit
allowed for the heater circuit. It is useful for reducing
the power output of fixed resistance heaters. The load
will be turned on for a period of time and then turned off
for a period of time to maintain the average current
draw to the value set.
1.
Display Mode: Advanced
2.
Range: 20% - 100%, Off
3.
Default: Off
4.
Note: The value range is in 10% increments.
