Connection of output U
T
9
(option)
Supply voltage connection for external energization
Connection of outputs OUT5/6
0
(option)
Digital outputs (opto-coupler), galvanic isolated, common positive control
voltage, output rating: 18...32VDC
Connection of bus interface
!
(option)
RS422/485 interface with Modbus RTU protocol
a
If the universal output OUT3 or
OUT4 is used there may be no
external galvanic connection
between measuring and output
circuits!
* Interface description Modbus RTU in speperate manual: see page 62.
Electrical connections
Terminal connection
8
Operating manual MIR-491
1
2
3
K
+
-
+
-
13V
22mA
13
14
15
11
12
13
17
(16)
14
15
12
11
10
3
OUT3 transmitter supply
13
14
15
Option
17
(16)
1
3
4
5
6
7
8
9
10
11
12
13
14
15
17
(2)
(16)
+24VDC
5mA
5mA
0V
1
2
3
K
+
-
+
-
17,5V
22mA
14
13
+
-
15
OUT3
10
11
12
x
J
J
8 9
di2/3, 2-wire transmitter supply
1
3
4
5
6
7
8
9
10
11
12
13
14
15
17
(2)
(16)
option
1
3
4
5
6
7
8
9
10
11
12
13
14
15
17
(2)
(16)
option
1
3
4
5
6
7
8
9
10
11
12
13
14
15
17
(2)
(16)
option
11
12
13
14
15
10
11
12
13
14
15
10
11
12
13
14
15
RGND
RGND
RGND
R
T
RS485-RS232
converter
PC
DATA A
DATA B
DATA A
DATA B
DATA A
DATA B
J
max. 1000m
"Twisted Pair” cable
10
R
T
R=100 Ohm
RGND connection optional
R = 120...200 Ohm
T
R = 120...200 Ohm
T
9
RS485 interface (with RS232-RS485 interface converter)
*