Features - Mitsubishi MELESEC-ST User Manual

1 OVERVIEW

1.1 Features

(1) Wiring reduction
Head module
24VDC supply
External power supply
(External SYS.
power supply)
:Internal wiring
24VDC supply
External power supply
:External wiring
(External AUX. power
supply)
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(a) External Power supply wiring
By connecting load power supply cables to the power distribution modules
(bus refreshing module, power feeding module), load power can be
supplied to all I/O modules and intelligent function modules, resulting in
wiring reduction, i.e., the power supply wiring is required only for the power
distribution modules.
Bus refreshing
I/O module
module
5VDC
24VDC
Shield grounding
(b) Wiring in field
Only the head module needs to be wired in the field. The I/O modules and
intelligent function modules need not be wired.
(c) Wiring the base modules
Screw clamp type and spring clamp type terminal blocks in base modules
are available. The spring clamp type does not need retightening. Note that
the screw clamp type and spring clamp type cannot be used together in the
system.
Power feeding
I/O module
module
5VDC+Internal Bus
24VDC supply
External power supply
(External AUX. power
supply)
MELSEC-ST
Intelligent function
module
Shield grounding
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