COMECO RT1800 User Manual

3
1. APPLICATION
RT1800 is a compact, multifunctional all-purpose microprocessor controller. Its user-configurable analog input
allows on-site adaptation to various thermocouple and RTD sensors as well as current and voltage output
transducers for pressure, relative humidity, flow, etc. The RT1800 controller may be ordered with a second
analog input for cascaded operation or remote set-point setting.
A set-point profile control is an additional option.
The device may be equipped with up to 4 relay and/or analog outputs that may serve as control outputs,
limit comparators, alarm outputs, etc. The built-in timer may be programmed to fully control one of the output
relays providing convenient delay at start-up.
The controller offers all standard PID features including bumpless auto/manual changeover. The two displays
─ one for the process variable and another for the set point ─ plus the control-action bar-graph allow all
necessary information to be read at a glance.
The optional digital interface, either RS232 or RS485, provides connection to an operator station driven
network as well as hierarchical control.
The switch-mode power supply provides for trouble-free operation under heavy mains voltage variations
(from 85 to 265 VAC).
The unit is specially designed to sustain the heavy electromagnetic disturbances that often arouse
in industrial environment by the means of optical decoupling of all inputs and outputs and special noise
suppression circuits.
2. TECHNICAL SPECIFICATIONS
2.1. Indication: LED, IP56
Indication
Case
PV Display SV Display Bar-graph LEDs
'B'
'Q'
4 red digits,
14 mm high
"MEASURED value"
4 green digits,
10 mm high
"SET POINT value"
'H' / 'V'
10-point,
yellow,
0...100%
OUT1 control
8 LEDs for:
outputs OUT1 and OUT2 (green);
alarms AL1, AL2, AL3 (red);
auto-tuning AT (yellow);
manual control MAN (yellow);
profile control PRO (yellow)
'S'
4 red digits,
8 mm high
"MEASURED value"
4 green digits,
8 mm high
"SET POINT value"
none 6 LEDs (no LEDs for AL3 and MAN)
2.2. Keyboard: membrane, IP56
Keys and functions
Case
SET W S T A/M
'B'
'H' / 'V'
'Q'
Manual/
Auto
'S'
setting
parameter value;
displaying
next parameter;
level switching
starting parameter value
adjustment;
selecting digit
increasing value decreasing value
no manual
control

COMECO RT1800 Specifications

General

Brand	COMECO
Model	RT1800
Category	Controller
Language	English