DCP200 Profile Controller & Recorder -Product Manual
Page 14 Introduction 51-52-25-150, Issue 1 –April 2009
1Introduction
This product is a 1/4DIN size (96 x 96mm front) microprocessor based graphical process
controller, featuring a 160 x 80 pixel, monochrome LCD with a dual colour (red/green)
backlight. It can control process variables from a variety of sources such as temperature,
pressure, flow and level.
The operating voltage is either 100-240V at 50/60 Hz or 24V-48V AC/DC depending on the
model purchased. Optional features include a USB interface, RS485 or Ethernet
communications, profile controlling and data recording. Non-volatile memory protects against
data or configuration loss during power outages. If the unit is left un-powered, a lithium
battery powers the data recorder’s real-time clock for a minimum of one year.
The USB Interface option allows uploading or downloading instrument configuration settings
to/from a USB memory stick, for easy configuration of multiple instruments or transfer to/from
the PC configuration software. If the Data Recorder of Profiler options are fitted, recordings
and profile information can also be transferred via the memory stick.
The Data Recorder option allows the user to make recordings of the process over time.
Recordings can be transferred to a memory stick using the USB Port or downloaded using
one of the communications options.
The Profiler option allows the user to predefine up 255 segments, shared amongst up to 64
Setpoint Profiles. These control the setpoint level over time, increasing, decreasing or
holding its value as required. When combined with the real-time clock of the Data Recorder
option, the profiling capabilities are expanded to allow automatic program start at a defined
time and day.
Inputs are user configurable for thermocouple and RTD probes, as well as linear process
signal types such as mVDC, VDC or mADC. Multipoint scaling can compensate for non-
linear signals. Output options include relays, SSR drivers, triacs or linear mV/voltage
modules. These can be used for process control, alarms or retransmission of the process
variable or setpoint to external devices. Transmitter Power Supply options can provide an
unregulated 24V DC (22mA) auxiliary output voltage, or a 0 to 10VDC stabilised excitation
for external signal transmitters.
Alarm indication is standard on all instruments; up to five alarms can be defined. Alarms may
be set as process high or low, deviation (active above or below controller setpoint), band
(active both above and below setpoint), rate of input change, control loop or signal break
types. Alarm status can be indicated by lighting an LED, changing the display backlight
colour or viewing the alarm status screen. These alarms can be linked to any suitable output.
The controller can be programmed for on-off, time proportioning, or current proportioning
control implementations, depending on the output modules fitted, and feature manual or
automatic tuning of the PID parameters. A secondary control output is available when
additional output modules are fitted. Optional analogue Remote Setpoint inputs can be
included. Configuration of the major settings is made easy by a Setup Wizard that runs
automatically at first ever power-up or whenever option modules have been changed. Access
to the full range of parameters is via a simple menu driven front panel interface, or the PC
based configuration software.