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. 4 / 4
LIGHTNING SURGE PROTECTION
■
MULTIPLEX TRANSMISSION
4
3
2
1
13
14
15
16
9
10
6
5
12
7
11
DAL4-1
8
A
B
C
3
2
1
MDP-DM3
G
A
B
C
3
2
1
G
–
+
DLA1, 22LA1
LINE
–
+
LINE
MDP-DM3
1
2
3
B
C
A
G
PANEL
+
–
+
–
+
–
*
*
*
*
Terminating resistor
Notes
• Be sure to use lightning surge protectors (model: MDP-DM3) on twisted-pair cables.
• Be sure to connect the terminal No. 1 of the MDP-DM3 with SG terminal of the DAL4.
• For connecting model DLA1 or 22LA1 with the DAL4 in the same panel, install them between the MDP-DM3 and the DAL4.
Be sure to connect the terminal No. 1 of the MDP-DM3 with SG terminal of the DAL4.
• Lightning surge protectors for power supply line are recommended for complete protection.
■
M-BUS
4
3
2
1
13
14
15
16
9
10
6
5
12
7
11
DAL4-1
8
A
B
C
3
2
1
MDP-DM3
G
A
B
C
3
2
1
G
–
+
DLA2, SMLM
LINE
–
SG
SG
+
LINE
MDP-DM3
1
2
3
B
C
A
G
PANEL
+
–
+
–
+
–
*
*
*
*
Terminating resistor
Shielded
Twisted-pair Cable
Shielded
Twisted-pair Cable
Shielded
Twisted-pair Cable
Notes
• Be sure to use lightning surge protectors (model: MDP-DM3) on twisted-pair cables.
• Be sure to connect the terminal No. 1 of the MDP-DM3 with SG terminal of the DAL4.
• For connecting model DLA2 or SMLM with the DAL4 in the same panel, install them between the MDP-DM3 and the
DAL4. Be sure to connect the terminal No. 1 of the MDP-DM3 with SG terminal of the DAL4.
• Lightning surge protectors for power supply line are recommended for complete protection.
