User Manual For - CONTROLLER/DATA RECORDER MultiCon CMC-99/141
–
for
Controller output
parameter block:
•
in
Offset
parameter write
0
,
•
in
Low output limit
write
0 mA
,
•
in
High output limit
write
20 mA
,
After leaving the configuration save the settings. In next steps we should set Logical
channels (examples of logical channel configuration are presented in
Chapter 7.8.11.
Examples of Logical Channels configuration
, especially
7.8.11.8. Application of Logical
channel in the Controller mode
), set Modbus for a Slave device (examples of Modbus
configuration are presented in
Chapter 7.15.4. Modbus - Example of Modbus protocol
, examples of external outputs configuration which will
communicate with a Slave device via RS-485 are presented in
Chapter 7.11.4. Examples of
external output configurations
7.13.2.2.
Application of the Controllers in cooperation with heater which is controlled
by
SSR
output.
See also:
Chapter 7.13. CONTROLLERS
Chapter 7.10.3. Built-in output - PWM
(Pulse-width modulation) mode for SSR relay output
Task:
The task is to configure the controller which will control the heater using the SSR output
in order to obtain a constant object temperature. Logical channels with a set point value and
temperature from the thermocouple type K sensor are connected to the controller. Due to
the fact that choosing a PID controller is not a matter of the task, we can use the following
demonstration values: P=5, I=10, D=1. We do not want the controller to respond to
a deviation lower than 2ºC. On the controller's output set 4-20mA range because that is the
range of the converter we use to control the heater in this task.
Solution:
First configure the controller, then connect the type K thermocouple and Current
converter to the device. Examples of these connections are presented in
Fig. 7.131. The connection scheme for RT4 module and S8 module
215
5
6
7
8
3
4
SERVICE
+24V DC ±5%
(
I
max. = 200mA)
Wej. cyfrowe
0/15..24V DC
RS-485
GND
GND
A+
B-
isolated
Type K
thermocouple
Slot A
Current
converter
Heater
Control system
0÷5A
GND
1
2
TC4
4 thermocouple inputs
IN4
+
-
n01
n02
n03
n04
n05
n06
n07
n08
IN3
+
-
IN2
+
-
IN1
+
-
n01
n02
n03
n04
n05
n06
n07
n08
n09
n10
S8
8 SSR outputs
+10..24V DC
OUT1
GND
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
Slot C
Power supply
(depending on version)