M8BS-8E3A
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-5491-E3A P. 4 / 4
WIRING INSTRUCTIONS
■
M3.5 Screw (I/O, DC power supply unit)
Torque: 0.8 N∙m
■
M3 Screw (AC power supply unit)
Torque: 0.5 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 power ter-
minals.
3) Installation & environment
MAINTENANCE
For maintaining AC power supply types, DC Power Supply
Units are available as below:
• 85 – 132V AC: HDC6-2-K
• 170 – 264V AC: HDC6-2-L
Power units’ standard life is expected for 10 years with
average ambient temperature 30°C (86°F) and 0.4A load.
Contact M-System for use in extremely different conditions.
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HOW TO REPLACE THE POWER UNIT
1) Prepare Power Unit (switching regulator) model HDC6-
2-K or HDC6-2-L.
2) Turn off the power supply connected to the Power Unit.
3) Detach the wire binding and remove the wiring connect-
ed to the power terminals 1 – 2 and 4 – 5.
4) Loosen and remove the mounting screws
A
(4 places) and
the screws which fixing the Power Unit to the base plate.
5) Detach the Power Unit from the Installation Base.
6) Attach the new Power Unit to the Installation Base and
tighten the screws in reverse order as explained above.
A
A
A
A
5
4
3
2
1
5
4
3
2
1
Mounting screws with washer for attaching
power unit, M3 x 5 screws, 2 pls. per unit
A
1
2
3
4
5
: Mounting screws with
washer, M3 x 6 (4 pls.)
: 24V DC (+)
: 24V DC (–)
: FG
: AC power input (U)
: AC power input (V)
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FRONT VIEW
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.
