DAL4
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: [email protected]
EM-6782 Rev.1 P. 3 / 4
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CONNECTION DIAGRAM
4
3
2
1
13
14
15
16
U(+)
V(–)
POWER
9
10
PORT-A
Shielded
Twisted-pair Cable
6
5
8
7
■
DAL4-1
■
DAL4-2
LINK A
13
14
15
16
U(+)
V(–)
POWER
9
10
FIBER OPTICS
LINK B
FIBER OPTICS
*
Jumper Pin
+
–
Jumper Pin
*
+
–
PORT-B
Shielded
Twisted-pair Cable
*
Jumper Pin
+
–
PORT-C
Shielded
Twisted-pair Cable
Jumper Pin
*
+
–
PORT-C
Shielded
Twisted-pair Cable
Terminating
Resistors
Terminating
Resistor
Terminating
Resistor
■
DAL4-5, 7
PORT-A TXD
PORT-A RXD
FIBER OPTICS
13
14
15
16
U(+)
V(–)
POWER
9
10
Jumper Pin
*
+
–
PORT-C
Shielded
Twisted-pair Cable
Terminating
Resistor
****
**
**
**
**
**
FG
***
12
FG
***
12
FG
***
12
When the unit is located at the end of transmission line via twisted-
pair cable (= no cross-wiring), short across these terminals.
Do not short them for the one not located at the end.
When the DAL4 is to be connected with the 22LA1 or DLA1 multi
transmission devices,do not connect the shield wire to the SG
(4, 8 or 16) but to the FG at the instrumentation panel.
Grounding the FG improves noise immunity of the power and
transmission lines, and is a recommended practice when the DAL4
is installed where a noise is present.
*
**
***
WIRING INSTRUCTIONS
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SCREW TERMINAL
Torque: 0.8 N·m
CHECKING
1) Terminal wiring: Check that all cables are correctly con-
nected according to the connection diagram.
2) Power input voltage: Check voltage across the terminal
9 – 10 with a multimeter.
3) Twisted-pair cable: CPEV-0.9 dia. or larger. Check that
the (+) are connected to (+), (–) are connected to (–).
4) Twisted-pair cable ports: When the port is located at the
end of a transmission line, or unused, short across the
terminating resistors (2 – 3, 6 – 7 or 14 – 15).
