Selection Of Power Distribution Modules; Current Consumption Calculation - Mitsubishi MELESEC-ST User Manual

5 POWER DISTRIBUTION MODULES

5.2 Selection of Power Distribution Modules

5.2.1 Current consumption calculation

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Select the power distribution modules by calculating the total current consumption of
the head module, I/O modules, external load devices and intelligent function modules
supplied by the power distribution modules.
Refer to Chapter 7 for the 5VDC internal current consumption of the I/O modules.
For the 5VDC internal current consumption of the head module and intelligent function
modules, refer to the manuals of the corresponding modules.
For user-prepared products, refer to the manuals of the corresponding devices.
(1) Bus refreshing module and power feeding module
The power distribution modules are classified into the bus refreshing
module and power feeding module.
The bus refreshing module is used to supply 5VDC and distribute 24VDC. The
power feeding module is designed to distribute 24VDC. Therefore, it cannot be
used to supply 5VDC.
Make sure to mount the bus refreshing module (ST1PSD) on the right side of the
head module. Then, make sure to attach that bus refreshing module onto the
base module (ST1B- 4P2-H-SET) for powering head module.
When mounting a new bus refreshing module (ST1PSD), be sure to use the
base module (ST1B- 4P2-R-SET) for adding bus refreshing module.
A malfunction will result if the base module (ST1B- 4P2-H-SET) for powering
head module is used when a new bus refreshing module is mounted.
MELSEC-ST
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