6 Connection
SMA Solar Technology AG
Installation Manual
EDMM-WAGO-IO-IA-en-11
32
6.5.5.3
2/4-channel analog input terminal (TempIN)
The 2/4-channel analog input terminal (TempIN) evaluates two PT100 sensors. The resistance values are converted to
temperature values. A microprocessor in the bus terminal linearizes the measured resistance values and converts them
into a numerical value that is proportional to the temperature of the selected resistance sensor.
A green status LED and a rote error LED for each channel indicate either the operating state, a short circuit, a wire
break, or values outside the range of measurement. PT100 sensors are connected to the CAGE CLAMP® connections
+R1/-R1 to +R4/-R4.
For detailed information on evaluation of the LED statuses (see Section 4.8 "LED Signals", page 16).
C
D
A
B
F
E
G
H
Figure 23: Connections of the 2/4-channel analog input terminal (TempIN)
Position
Connection
Designation
Designation
A
1
+R1
B
2
-R1
C
3
+R3
D
4
-R3
E
5
+R2
F
6
-R2
G
7
+R4
H
8
-R4
+R 1
+R 3
+R 2
+R 4
24 V
0 V
1
5
2
6
3
7
4
8
-R 1
-R 2
-R 4
-R 3
-R
+R
10 nF
100 nF
MUX
A
D
logic
function
error
Figure 24: Circuitry of the 2/4-channel analog input terminal (TempIN)
Summary of Contents for Modbus EDMM-10
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