Mitsubishi MELESEC-ST User Manual page 49

5 POWER DISTRIBUTION MODULES
5VDC internal wiring
Head Bus refreshing
module module
Internal
circuit
DC/DC
External
DC24V
AUX.
power
supply
*4
External
DC24V
SYS.
power
24VDC internal wiring
supply
5 - 4
(2) 5VDC, 24VDC internal wiring
*1
Input module Input module
DC5V
SG
Internal Internal
circuit circuit
*3
Input Input
circuit circuit
External devices
(Sensors, etc.)
*2
1: 5VDC is supplied to the modules mounted between the bus refreshing module (or
head module) and the next bus refreshing module by the internal wiring of the
base modules.
The total 5VDC internal current consumption of the slice modules mounted
between the bus refreshing module and the next bus refreshing module should not
exceed the maximum rated output current 2.0A.
2: 24VDC is distributed to the slice modules mounted between the power feeding
module (or bus refreshing module) and the next power feeding module (or bus
refreshing module) by the internal wiring.
The total 24VDC current of the slice modules mounted between the power feeding
module (or bus refreshing module) and the next power feeding module (or bus
refreshing module) should not exceed the maximum rated current (I/O modules:
8.0A, Intelligent function modules: 3.0A).
3: Indicates the portion where the 5VDC or 24VDC internal wiring is disconnected by
the power distribution module.
4: When a contact output module is used as an output module, an external AUX.
power supply (for relay load) must be prepared separately.
Power
feeding
Bus refreshing
Output module
module
*3
Internal Internal
DC/DC
circuit circuit
*3
Output
circuit
DC24V
External
AUX.
External devices
power
(Lamps, etc.)
supply
*4
*2
MELSEC-ST
*1
Output module
module
*3
DC5V
SG
Internal
circuit
*3
Output
circuit
DC24V
External
AUX.
External devices
power
(Lamps, etc.)
supply
*4
*2
Bus refreshing
module
DC5V
SG
DC/DC
DC24V
DC24V
External
AUX.
power
supply
*4
5 - 4