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2.2
Terminal connection
Power supply connection
1
See chapter 10 "Technical data"
Connection of outputs OUT1/2
2
Relay outputs (250V/2A), potential-free
changeover contact
Connection of outputs OUT3/4
3
a
relay (250V/2A), potential-free
changeover contact
universal output
b
current (0/4...20mA)
c
voltage (0/2...10V)
d
transmitter supply
e
logic (0..20mA / 0..12V)
Connection of input INP1
4
Input for variable x1 (process value)
a
thermocouple
b
resistance thermometer (Pt100/ Pt1000/ KTY/ ...)
c
current (0/4...20mA)
d
voltage (0/2...10V)
Connection of input INP2
5
a
Heating current input (0...50mA AC)
or input for ext. set-point
(0/4...20mA)
b
Potentiometer input for position
feedback
Connection of input INP3
6
As input INP1, but without voltage
Connection of inputs di1, di2
7
Digital input, configurable as switch or
push-button
Connection of inputs di2/3
8
(option)
Digital inputs (24VDC external),
galvanically isolated, configurable as switch or push-button
Electrical connections
Operating manual MIR-491
7
Terminal connection
L
N
+
_
SSR
3
4
5
6
9
10
11
12
13
14
15
1
2
3
4
5
8
9
10
11
12
13
14
15
17
(16)
2
1
8
7
6
7
Logik
5
INP2 current tansformer
6
9
10
11
12
13
14
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
17
(16)
L
N
+
5
4
3
2
1
8
7
15
2
OUT1/2 heating/cooling