Weidmuller WI-I/O 9-U2-TC: Wireless Mesh I/O & Gateway, Thermocouple V1.6 - Manual

WI-I/O-9-U2-TC - Thermocouple Adapter for WI-I/O-9-U2
Revision 1.6 - Oct 2011
Installation & Configuration Guide
Caution:
ESD Sensitive pins. Use ESD
handling precautions.
Thermocouple input terminals must
be within +/- 5V of the WI-I/O-9-U2
‘GND’ terminal
Connections
Installation
The WI-I/O-9-U2-TC adaptor board plugs into the
bottom 6 terminals on the WI-I/O-9-U2 terminal strip.
A separate 14 way terminal strip is provided to allow
connection to the remaining terminals.
Address locations
38005 = 32 bit Floating Point temperature value
38007 = 32 bit Floating Point Cold Junction value
30003 = Scaled 16 bit Analog value
30004 = Scaled 16 bit Cold Junction value
Analog Input Scale Examples
· For normal Polarity setting Zero and Span to 0 and 100 respectively
will scale the register to read the temperature as an integer value,
e.g. 148.25 °C will read 14825 or 26.51 °C will read 2651
·
For normal Polarity, setting Zero and Span to 15019 and 682.6667
respectively will scale the register so that a temperature of -10 to
50°C will give a scaled range of 8192 to 49152
· For Reverse Polarity, setting Zero and Span to 30948 and 455.106
respectively will scale the register so that a temperature of -50 to
40°C will give a scaled range of 8192 to 49152
Normal Type “T”
Thermocouple
* Error Value is set in register 30003
when the thermocouple is open
circuit.
* Error Value is set in register 30003
and 30004 when the thermocouple
adaptor is not fitted
Configuration
If ‘Thermocouple
Polarity’ selection is
reversed
Thermocouple wires
must be swapped,
e.g. (red) to TC+ &
(blue) to TC-
-Ve
+Ve
(+24V)
Thermocouple Adapter
COM
Constantan
(red)
Copper (blue)
N/C
N/C
TC+ TC-
Dip Switches
All Dip Switches
must be set to
the OFF position.
O
N
1
2
3
4
5
6
Type T 0°C to + 330°C - 200°C to + 5°C
Type K
Type J
0°C to + 410°C - 200°C to + 5°C
15°C to + 300°C - 210°C to + 10°C
Type Normal Reverse
Thermocouple Range @ Tamb (-40- +60) Thermocouple Range @ Tamb (+10- +40)
Type T - 25°C to + 365°C - 200°C to + 70°C
Type K
Type J
- 25°C to + 455°C - 200°C to + 70°C
- 10°C to + 345°C - 210°C to + 60°C
Type Normal Reverse
On the “I/O Configuration” web page select:
· Select Thermocouple type from the drop down list. Options
are Type T, Type J, Type K.
· Select the Polarity from the drop down list (Normal or
Reversed)
· Set Thermocouple Error Value to a value the integer
registers (30003 and/or 30004) will go to during fail *
· Press “Save and Activate Changes” button.
Inst_WI-I/O-9-U2 _TC_Adaptor_V1.6.vsd
PWR
RF
232
485
D
1
D
2
D
3
D
4
D
5
D
6
D
7
D
8
A
I 1
A
I2
A
I3
A
I4
A
O
1
A
O
2
G
N
D
+
2 4
V
+
-
+
G
N
D
+ 2
4
V
A
I 1
-
A
I2
+
+
WI-I/O 9-U2
6720005011