M-system MDC Instruction Manual page 2

TERMINAL CONNECTIONS
Connect the unit as in the diagram below or refer to the connection diagram on the top of the unit.
■ EXTERNAL DIMENSIONS unit: mm (inch)
50 (1.97)
■ CONNECTION DIAGRAM
• MDC-1 & -2
U 7
POWER
V 8
• MDC-3
U 7
POWER
V 8
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
7 – 8 with a multimeter.
3) Output: Check voltage across the terminal 1 (+) – 2 (–) or
3 (+) – 2 (–) with a multimeter.
4) Output: Check that output load is within the permissible
limit.
MDC-1, -2: 50mA max.
MDC-3: 65mA max. (the total of 24V/40V outputs)
107 (4.21)
127 (5)
1 +
SUPPLY OUTPUT
2 –
1 +
24V REGULATED
2 – (COM.)
40V UNREGULATED
3 +
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
CLAMP
(top & bottom)
DIN RAIL
35mm wide
2–4.5 (.18) dia.
MTG HOLE
15 (.59) deep
8–M3.5
SCREW
[3.3 (.13)]
• When mounting, no extra space is needed between units.
ADJUSTMENT PROCEDURE
Output voltage adjustment is accessible via front potenti-
ometer behind the front cover.
1) Open the front cover so that OUTPUT ADJ. potentiom-
eter is exposed.
2) Connect a multimeter across the output terminal 1 (+) –
2 (–).
3) Turn the potentiometer clockwise or counterclockwise
until desired voltage reading is obtained.
LIGHTNING SURGE PROTECTION
M-System offers a series of lightning surge protector for
protection against induced lightning surges. Please contact
M-System to choose appropriate models.
MDC
7.8 (.31)
6 5 4 3
7 8 1 2
40 (1.57)
50 (1.97)
EM-9222 Rev.6 P. 2 / 2