R7M-SV4
P. 3 / 7
EM-7803-A Rev.6
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax:
+81(6)6659-8510 E-mail: [email protected]
CONNECTION DIAGRAM
Connect the unit as in the diagram below.
4
7
6
3
2
5
1
0V
24VDC
FG
SLD
DG
DB
DA
1
VH0
10
VL0
11
I0
2
COM0
INPUT 0
3
VH1
12
VL1
13
I1
4
COM1
INPUT 1
6
VH2
15
VL2
16
I2
7
COM2
INPUT 2
8
VH3
17
VL3
18
I3
9
COM3
INPUT 3
■
Input Connection Examples
VHn
VLn
In
+
– COMn
WIDE SPAN
VOLTAGE
VHn
VLn
In
+
– COMn
NARROW SPAN
VOLTAGE
VHn
VLn
In
+
– COMn
Be sure to close across VLn and In terminals for a current input.
CURRENT
RANGE
EXTENSION CONNECTOR
In order to improve EMC performance, bond the FG
terminal to ground.
Caution: FG terminal is NOT a protective conductor terminal.
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
2
(AWG26 - 22)
Recommended manufacturer: Japan Solderless Terminal
MFG.Co.Ltd
Others: 0.25 to 1.65 mm
2
(AWG 22 to 16)
Recommended manufacturer: Japan Solderless Terminal
MFG.Co.Ltd, Nichifu Co.,ltd
6 (.24) max
3.3 (.13) max
mm (inch)
MASTER CONNECTION
■
MASTER CONNECTION
Tx+/Rx+
Tx–/Rx–
SG
Rx+
Rx–
Host PC
DA
DB
DG
SLD
FG
Remote Unit
DA
DB
DG
SLD
FG
Remote Unit
TERMINATOR
TERMINATOR
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.
