Power Supply Module Selection - Mitsubishi A1SJH(S8) User Manual

5. POWER SUPPLY MODULE
5.1.1

Power supply module selection

Power supply module is selected based on to the total current consumption of the I/O
module, special function module and peripheral devices to which power is supplied by the
subject power supply module. When extension base unit A1S52B(S1), A1S55B(S1),
A1S58B(S1), A52B, A55B, A58B is used, take into consideration that the power to the
module is supplied by the power supply module of the main base.
For 5VDC current consumption of I/O modules, special function modules and peripheral
devices, refer to Section 2.3.
(1) Power supply module selection when extension base unit A1S52B(S1), A1S55B(S1),
A1S58B(S1), A52B, A55B, A58B is used
When extension base unit A1S52B(S1), A1S55B(S1), A1S58B(S1), A52B, A55B,
A58B is used, 5VDC power supply is supplied from the power supply module of the
main base unit via extension cable. Thus, when one of these units is used, be careful
with the following:
(a) Select a 5VDC power supply module of the main base unit with sufficient
capacity to supply 5VDC current consumed by A1S52B(S1), A1S55B(S1),
A1S58B(S1), A52B, A55B, A58B.
Example) If 5VDC current consumption on the main base unit is 3A and 5VDC
current consumption on the A1S55B is 1A, then, the power supply
module installed to the main base unit must be A1S61P(5VDC 5A).
(b) Since the power to A1S52B(S1), A1S55B(S1), A1S58B(S1), A52B, A55B, A58B
is supplied via extension cable, a voltage drop occurs through the cable. It is
necessary to select a power supply module and cable with proper length so that
4.75VDC or more is available at the receiving port. For the details of voltage
drop, refer to Section 6.1.3, the applicable standards of extension base units.
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