6
1.4 Rear Terminal Layout and Wiring
Wiring diagram at back side
1: For linear voltage input, if the range is
below 500mV, connect to terminals 19 and
18. 0
～
5V or 1
～
5V signal can be input
from terminals 17 and 18.
2: 4
～
20mA signal can be converted to 1
～
5V signal by a 250 ohm resistor and input
from terminals 17 and 18. If I4 module is
installed in MIO slot, 4
～
20mA signal can
be input from terminals 14+ and 15- and
2-wire transmitter can be input from
terminals 16+ and 14-.
3: The compensation wires for different
kinds of thermocouple are different, and
should be directly connect to the terminals.
When the internal auto compensation
mode is used, connecting the common wire between the compensation wire and the terminals will cause measurement
error.
4: Main output from terminals 13+ 11- as current output, single channel SSR voltage output.
Wiring diagram of D size instruments (72×72mm)
1: Linear voltage signal of range below 500mV input from
terminals 13 and 12. 0
～
5V and 1
～
5V input from terminals 11
and 12.
2: 4
～
20mA linear current signal can be converted to 1
～
5V
voltage signal by connecting a 250 ohm resistor and input from
terminals 11 and 12.
3: S, S1 or S4 module can be installed in COMM slot for
communication. If relay, TRIAC no contact switch, or SSR
driver voltage output module is installed in COMM, it can be
used as AL1 alarm output. If I2 module is installed in COMM
and parameter “bAud” set to 1, then on-off signal in MIO is simulated. Setpoints SV1 and SV2 can be switched by
connecting an external mechanical switch at terminals 3 and 4.
Note: This graph is for upright
instruments with dimension A, C
or E.
For instruments with dimension
B and F, just clockwise rotate
the graph 90 degree and the
terminal numbers keep the
same.
AU1
M2/MIO
AUX
ALM
COMM
AL2
1
2
3
4
5
6
7
8
9
10
11
12
15
16
17
18
19
20
13
14
AL1
AU2
COM
COM
N/O
N/C
N/O
N/O
+
+
A
B
+
100-240VAC~
+
+
OUTP
COM
COM
N/O
N/C
N/O
N/O
COM
COM
N/O
N/O
N/O
N/C
+
+
OP2
OP1
+
0-5V
1-5V
G1
G2
G1
G2
G1
G2
Thyristor trigger output
（
K1/K3
）
Thyristor trigger output
（
K3
）
Thyristor trigger output
（
K3
）
+
COM
N/C
V+
N/O
+
+
+
RXD
GND
TXD
AU1
AUX
COMM/AL1
1
2
3
4
5
6
7
8
9
11
12
13
14
10
AU2
COM
COM
N/O
N/C
N/O
N/O
+
+
A
B
+
100-240VAC~
+
+
OUTP
COM
COM
N/O
N/C
N/O
N/O
OP2
OP1
+
0-5V
1-5V
G1
G2
Thyristor trigger output
（
K1
）
COM
N/O
+
TXD
RXD
GND
