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CONNECTION DIAGRAM
Connect the unit as in the diagram below.
INPUT 0
1
VH0
10
VL0
11
I0
2
COM0
INPUT 1
3
VH1
12
VL1
13
I1
4
COM1
INPUT 2
6
VH2
15
VL2
16
I2
7
COM2
INPUT 3
8
VH3
17
VL3
18
I3
9
COM3
In order to improve EMC performance, bond the FG
terminal to ground.
Caution: FG terminal is NOT a protective conductor terminal.
Input Connection Examples
+
VHn
VLn
WIDE SPAN
VOLTAGE
NARROW SPAN
In
– COMn
VHn
+
VLn
CURRENT
In
RANGE
– COMn
Be sure to close across VLn and In terminals for a current input.
MASTER CONNECTION
MASTER CONNECTION
Host PC
TERMINATOR
Tx+/Rx+
Tx–/Rx–
SG
Rx+
Rx–
Be sure to connect the terminating resistor included in the product package to the unit at both ends of transmission line.
The terminator must be connected across DA and DB.
The Host PC can be located other than at the extreme ends of transmission line.
SEN TRONIC
4
DA
1
DB
5
DG
2
SLD
3
FG
6
24VDC
7
0V
VHn
+
VLn
In
VOLTAGE
– COMn
Remote Unit
056 222 38 18
AG
WIRING INSTRUCTIONS
■ SCREW TERMINAL
Torque: 0.5 N·m
■ SOLDERLESS TERMINAL mm (inch)
Refer to the drawing below for recommended ring tongue
terminal size. Spade tongue type is also applicable. Solder-
less terminals with insulation sleeve do not fit.
Communication cable: Applicable wire size 0.2 to 0.5 mm
(AWG26 - 22)
Recommended manufacturer: Japan Solderless Terminal
MFG.Co.Ltd
Others: 0.25 to 1.65 mm
Recommended manufacturer: Japan Solderless Terminal
MFG.Co.Ltd, Nichifu Co.,ltd
3.3 (.13) max
DA
DB
DG
SLD
FG
mailbox@sentronic.com
www.sentronic.com
R7M-SV4
2
(AWG 22 to 16)
mm (inch)
Remote Unit
TERMINATOR
DA
DB
DG
SLD
FG
EM-7803-A Rev.6
2
P. 3 / 7
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