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■ CONNECTION DIAGRAM
Note: In order to improve EMC performance, bond the FG terminal to ground.
Caution: FG terminal is NOT a protective conductor terminal.
4
DA
1
DB
5
DG
2
SLD
3
FG
6
24V DC
7
0V
COMMUNICATION CABLE CONNECTIONS
■ 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.
WIRING INSTRUCTIONS
■ SCREW TERMINAL
Torque: 0.5 N·m
■ SOLDERLESS TERMINAL
Refer to the drawing below for recommended ring tongue
terminal size. Spade tongue type is also applicable.
Applicable wire size: 0.25 to 1.65 mm
Recommended manufacturer: Japan Solderless Terminal
MFG. Co., Ltd, Nichifu Co., Ltd
3.3 (.13) max
11
Y0A (NO)
12
Y0B (NC)
2
COM0
3
COM0
13
Y1A (NO)
14
Y1B (NC)
4
COM1
5
COM1
15
Y2A (NO)
16
Y2B (NC)
6
COM2
7
COM2
17
Y3A (NO)
18
Y3B (NC)
8
COM3
9
COM3
1
0V
10
+24V
Remote Unit
DA
DB
DG
SLD
FG
(AWG 22 to 16)
2
mm (inch)
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: info@m-system.co.jp
R7M-DC4G
Remote Unit
TERMINATOR
DA
DB
DG
SLD
FG
EM-7803-BB P. 4 / 4
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