Digital Temperature Controller; Heat/Cool Control - RKC INSTRUMENT SA200 General Description Manual

Digital Temperature
Controller
Features
Control loop break alarm and
temperature alarms
The control loop break alarm (LBA) monitors and protects an
entire temperature control system. The LBA detects heater
breaks, thermocouple or RTD failures, short circuits, or the
failure of an operating device such as a mechanical or solid
state relay.
When the PID computed value reaches 100% and the
temperature does not respond in a set time, the loop break
alarm is activated. Conversely, when the PID value reaches 0%
and the temperature does not respond accordingly, the loop
break alarm is turned on.
In addition to the control loop break alarm, deviation (high, low,
high-low), process (high, low), set value (high, low) and band
alarms can be selected.
Sensor
Heater
Controlled object

Heat/cool control

The heat/cool PID controller has heat and cool outputs for use where
process-generated heat exists. The controller allows the input of overlap
or deadband settings which can contribute to energy savings.
100%
Heat output
0%
2
SA200
(Optional)
PV SV
AT
OUT1
OUT2
SET
SA200
Operating unit
(Optional)
Cool output
Set value
Digital contact input for external
switching
An optional digital contact input is available for RUN/STOP and
SV1/SV2 switching. (RUN/STOP switching can also be
completed at the front key panel.) This function can be used
with the output from a timer, PLC, etc.
communication feature is selected, the external contact input is
not available.
Contact : ON
Instrument operating
in full operation
PV
SV
(RUN mode)
AT
OUT1
OUT2
SET
SA200
Contact : OFF
Down for maintenance
PV SV
(STOP mode)
AT
OUT1
OUT2
SET
SA200
Easy maintenance
The internal assembly of the SA200 can be removed from the
front of a control board. It is easy to inspect, maintain or
replace the instrument because it does not require access from
the back of the panel.
(Optional)
When the
Contact : OFF
Machine production
(SV1) PV
SV
AT
OUT1
OUT2
SET
SA200
Contact : ON
Machine production
suspended
(SV2) PV SV
AT
OUT1
OUT2
SET
SA200
SA200_03E