CLS200 Series User’s Guide
Chapter 1: System Overview
14
•
Independently Selectable Control and Output Modes:
You can set each control output
to on/off, time proportioning, Serial DAC (digital-to-analog converter), or distributed zero
crossing mode. Set up to two outputs per loop for on/off, P, PI or PID control with reverse 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 output 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.
•
CPU Watchdog:
The CLS200 series CPU watchdog timer output notifies you of system
failure. Use it to hold a relay closed while the controller is running, so you are notified if the
microprocessor shuts down.
•
Front Panel or Computer Operation:
Set up and run the controller from the front panel or
from a local or remote computer. Watlow
®
offers SpecView, a Windows
®
compatible Human
Machine Interface (HMI) software package that includes data logging and graphing features in
addition to process monitoring.
•
Modbus
®
RTU Protocol, EIA/TIA-232 and 485 Communications:
Connect to PLCs,
operator interface terminals and third-party software packages using the widely supported
Modbus
®
RTU protocol.
•
Multiple Job Storage:
Store up to eight jobs in memory, and access them locally by
entering a single job number or remotely via digital inputs. Each job is a set of operating
conditions, including setpoints and alarms.
•
Nonlinear Output Curves:
Select either of two non-linear output curves for each control
output.
•
Autotuning:
Use the autotune feature to set up your system quickly and easily.
•
Pulse Counter Input:
Use the pulse counter input for precise control of motor or belt speed.
•
Low Power Shutdown:
The controller shuts down and turns off all outputs when it detects
the input voltage drop below the minimum safe operating level.
