User Manual For - CONTROLLER/DATA RECORDER MultiCon CMC-99/141
7.8.11.2.
Application of Logical channel in the
Hardware input
mode for TC4 modules
See also:
Appendices
8.6. TC4, TC8, TC12 – THERMOCOUPLE SENSOR MEASUREMENT
Chapter 7.8.6. Logical Channels - Math function mode
Task:
The task is to measure four temperatures in the production hall by using a K-type
thermocouple. If all temperatures are greater than the preset value of
140 ° C
, in a separate
channel (alarm condition) the inscription
-HI-
is to be displayed, in other cases
-LO-
is
displayed. All the logical channels and the channel with the temperature alarm condition will
be displayed in one window in the values mode.
Solution:
Before measuring temperature the thermocouple sensors should be connected to the
device. An example of the connection is shown in
Fig. 7.69. Schematic diagram for the
TC4
module
In the first step you need to define five logical channels respectively for four
temperatures in the hall of the symbols A1, A2, A3, A4, and the temperature alarm condition.
To do this:
a) For the temperature reading of sensor 1 with the symbol A1:
–
touch the screen and press the
Menu
button,
–
press the
Device configuration
button,
–
enter the
Logical channels
menu,
–
using the arrows in the top navigation bar, select any
logical channel
(such as 1),
–
in the
Name
parameter write
Temperature A1
,
–
Mode
parameter set as
Hardware input
,
–
Source parameter set as
Inp. A1: Thermocouple
–
press the
Source configuration
button to set the source configuration options,
•
Mode
parameter set as
Thermocouple K
,
•
in
Low Limit
parameter write
-200°C
,
•
in
High Limit
parameter write
1370°C
,
–
for
Display
block parameters:
128
Power supply
(depending on version)
1
2
8
5
6
7
3
4
SERVICE
+24V DC ±5%
(
I
max. = 200mA)
digital input
0/15..24V DC
RS-485
GND
GND
A+
B-
isolated
TC4
4 thermocouple input
IN1
+
-
IN2
+
-
IN3
+
-
IN4
+
-
n01
n02
n03
n04
n05
n06
n07
n08
A1
A2
A3
A4
Slot A
Inp.A1 : Thermocouple
Inp.A2 : Thermocouple
Inp.A3 : Thermocouple
Inp.A4 : Thermocouple
