Emerson NELSON HEAT TRACE CM-2201 - General Operation 8

©2017 Nelson Heat Tracing Systems
www.nelsonheaters.com
GA2497 Rev.5
8
CM-2201/CM-2202 General Operation
5.1 General Operation
5.2 Display
The CM-2201/CM-2202 utilizes a 2 line x 16 character
alphanumeric display viewable from the front keypad.
The top line is reserved for the function or operation
and the bottom line displays the value range.
5.2.1 Navigation for CM2201
The CM2201 monitors one heating circuit consisting of
load (typically a heating cable) and controls the load
based on the temperature of the item being heated
(typically a pipe) as provided via one or two RTD’s
attached to the pipe and connected to the controller.
To monitor the load, press Actual until “Operating
Values” is displayed, then press Right or Left arrow to
scroll through the various values.
To review the statistics that have been collected,
press Actual until “Statistics” is displayed then press
Right or Left arrow to scroll through the various
statistics.
To change the control and monitoring settings
(including alarm settings), press the Program key and
then Right or Left arrow to scroll through the various
settings. Any setting can be altered by pressing the
Up or Down arrow. Note that a 4-digit password
may be required to change certain settings – when
required, the cursor will flash on the left most digit –
use the Up arrow to increase this digit value or
the Down arrow to decrease it. Move the cursor to
the second leftmost digit using the Right or Left
arrow and it will flash until adjusted using Up/
Down arrows. When the last digit has been
selected, press Enter and then changes will be
allowed to the setting. Once the setting is
adjusted, press the Enter key to store it.
To view alarms, press the Alarms key and then Right
or Left arrow to scroll through the various alarms.
Alarms that are not active can be erased by pressing
the Reset key.
5.2.2 Navigation for CM2202
The CM2202 can monitor/control two separate heating
circuits (channels). The controller defaults to Channel 1
upon first start-up. All parameters for Channel 1 can
be displayed and modified using standard techniques as
described for the CM2201 in Section 5.2.1.
To change to Channel 2, simply press the “ Actual ”
key and then right arrow – the active channel will be
displayed. To change the channel, press the Up arrow.
In general, when the active channel is displayed
(eg. "CH.2"), the channel can be changed by
pressing the Up or Down arrow.