User Manual For - CONTROLLER/DATA RECORDER MultiCon CMC-99/141
7.8.11.8. Application of Logical channel in the Controller mode
See also:
Chapter 7.8.7. Logical Channels - Controller mode
Task:
The task is to configure Controller to control (via RS-485) the Heater to get a constant
object temperature. The Controller uses logical channel in Set point value Mode (temperature
85ºC) and the feedback signal comes from the sensor Pt100.
Solution:
Before measuring and regulating the temperature, user should configure the device as
follows and then connect the thermocouple sensor and Current converter to the device. An
example of the connection is shown in
Fig. 7.72. Schematic diagram for the RT4 module and MB1 Modbus port
The first step is to configure appropriate parameters for the
Controllers
menu according to
7.13.2.1. Application of the Controllers
. Next, is to configure logical channels as follows:
For demanding object temperature value:
–
touch screen and press the
Menu
button,
–
press the
Device configuration
button,
–
enter
Logical channels
menu,
–
using the arrows in the top navigation bar, select any
logical channel
such as 1,
–
in
Name
parameter write
Setpoint
,
–
Mode
parameter set as
Set point value
,
–
in
Unit
parameter write
°C
,
–
in
Set point value
write
85°C
,
–
for
Displaying
block parameters:
•
Format
parameter set as
numeric
,
•
Precision
parameter set as
0
,
•
in
Graph low
parameter write
0°C
,
•
in
Graph high
parameter write
90°C
,
131
Power supply
(depending on version)
1
2
8
5
6
7
3
4
+24V DC ±5%
(
I
max. = 200mA)
digital input
0/15..24V DC
RS-485
GND
GND
A+
B-
isolated
Pt100
sensor
Slot B
RT4
4 RTD inputs
Current
converter
Slave device
Slave address: 1
Register: 1h
Heater
Control system
0÷5A
RS-485
I
N
1
I
N
2
I
N
3
I
N
4
n01
n02
n03
n04
n05
n06
n07
n08
n09
n10
n12
n13
n14
n15
n16
n11
GND
Inp.B1 : RTD
Inp.B2 : RTD
Inp.B3 : RTD
Inp.B4 : RTD
SERVICE
