The Chromalox intelliTRACE CTC is a microprocessor
based system with SSR power control that
switches 40 Amps per circuit at 120-277 VAC. The
CTC is a single or dual point commercial heating
cable controller with integrated ground-fault
protection. This controller may be used with CZH,
CMi or CPR heating cables. The CTC is intended
for use in commercial nonhazardous applications.
There are three user-selectable control modes
available on the CTC: Manual, Off or Auto. An
output of 1% to 100% is available while in Manual
Mode and you may choose either PID or ON/OFF
control while in the Auto Control Mode.
You may employ one or two RTD sensors per
circuit. When using two RTD sensors, the CTC
may be set to Low, High or Average. The CTC may
also be configured as a 2-circuit ambient sensing
controller that uses only one RTD to control
both circuits. This provides the owner with much
more flexibility and redundancy to help meet their
The CTC employs a soft start feature that uses a
proprietary software algorithm which reduces the
inherent self-regulating in-rush current, resulting
in less nuisance tripping at cold temperatures.
The soft start feature is selectable which allows
this controller to be employed in non-heat trace
applications as well.
All process conditions may be monitored and
managed both locally and remotely. All process
variable, communication and alarm settings and
security codes are user-adjustable via simple
page menu navigation.
In terms of system supervision, the CTC controller
monitors temperature, current load and
ground fault equipment protection leakage current
(GFEP). Additionally, the alarms on the CTC
consist of high and low temperature, high and
low current, high GFEP current and sensor failure.
Should the CTC unit realize a failed sensor, the
controller automatically switches into a user
adjustable manual output duty cycle. To eliminate
abrupt current spikes, the Chromalox CTC employs
bumpless transfer power switching when
switching over from either manual or auto mode.
The CTC unit is housed in a compact wall mountable,
NEMA 4X FG or optional 316 SS enclosure
and it features a high resolution TFT display,
LED indication of Load, Power & Alarm status
for each circuit and front panel capacitive touch
user interface buttons which are mounted on a
The CTC enclosure provides electrical connections
for the heating cable, the AC Power and
the RTD Sensors and it comes complete with
stainless steel mounting brackets.