Watlow CLS200 - Manual (Page 19)

CLS200 Series User’s Guide Chapter 1: System Overview
Doc.# 0600-3050-2000 Watlow Anafaze 3
Product Features
The CLS200 series controllers provide 4, 8 or 16 fully inde-
pendent control loops. When used as a stand-alone control-
ler, you may operate the CLS200 via the two-line 16-
character display and touch keypad. You can also use it as
the key element in a computer-supervised data acquisition
and control system; the CLS200 can be locally or remotely
controlled via an EIA/TIA-232 or EIA/TIA-485 serial com-
munications interface.
The CLS200 features include:
• Direct Connection of Mixed Thermocouple Sen-
sors:
Connect most thermocouples to the controller
with no hardware modifications. Thermocouple inputs
feature reference junction compensation, lineariza-
tion, process variable offset calibration to correct for
sensor inaccuracies, detection of broken, shorted or re-
versed thermocouples, and a choice of Fahrenheit or
Celsius display.
• Accepts Resistive Temperature Detectors
(RTDs):
Use 3-wire, 100 Ω , platinum, 0.00385-curve
sensors with two choices for range and precision of
measurements. (To use this input, order a CLS204 or
CLS208 controller with scaling resistors.)
• Automatic Scaling for Linear Analog Inputs: The
CLS200 series automatically scales linear inputs used
with industrial process sensors. Enter two points, and
all input values are automatically scaled in your units.
Scaling resistors must be installed.
• Dual Outputs: The CLS200 series includes both heat
and cool control outputs for each loop. Independent
control parameters are provided for each output.
• Independently Selectable Control and Output
Modes:
You can set each control output to on/off, time
proportioning, Serial DAC (digital-to-analog convert-
er), or distributed zero crossing mode. Set up to two
outputs per loop for on/off, P, PI or PID control with re-
verse or direct action.
• Control Outputs: Set high/low deviation and high/
low process limits to operate digital outputs as on/off
control functions or alarms.
• Flexible Alarm Outputs: Independently set high/
low process alarms and a high/low deviation band
alarm for each loop. Alarms can activate a digital out-
put by themselves, or they can be grouped with other
alarms to activate an output.
• Global Alarm Output: When any alarm is triggered,
the global alarm output is also triggered, and it stays
on until you acknowledge it.