IDEC MICROSmart FC6A Series, User Manual

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3: I
NSTALLATION AND
W
IRING
3-34 FC6A S
ERIES
MICROS
MART
U
SER
’
S
M
ANUAL
FC9Y-B1722
Connection Restrictions When Expanding the PLC
Connection Restrictions When Expanding the PLC
Expansion modules, the HMI module, the cartridge base module, and cartridges on the basic expansion side operate with the internal
power supply that is supplied from the CPU module or the expansion interface remote slave module. Expansion modules on the
expansion interface side operate with the internal power supply that is supplied from the expansion interface module (expander).
The internal power supply current that can be supplied to the expansion modules on the basic expansion side, HMI module,
cartridge base module, and cartridges depends on the module supplying the power. Ensure that the total amount of current for the
expansion modules on the basic expansion side, HMI module, cartridge base module, and cartridges does not exceed the limit of
the internal power supply that can be supplied.
Notes:

A maximum of eight expansion modules can be connected on the expansion interface side, regardless of the internal power supply current
that can be supplied from the CPU module or the expansion interface remote slave module.

Expansion modules require an I/O external power supply.
Main Power
Supply
Power
Supply
Expansion Modules
CPU Module Cartridges
HMI Module
Expansion Interface
Module (Expander)
(FC6A-EXM2)
Expansion Modules
Cartridges
Cartridge Base Module
Basic Expansion
Side
Main Power
Supply
Internal 5 V Line
Internal 24 V Line
Internal 5 V Line
Internal 24 V Line
Expansion Interface
Side
Expansion Modules
Expansion Interface
Module (Expander)
(FC6A-EXM2)
Expansion Modules
Basic Expansion
Side
Power
Supply
Main
Power
Supply
Main
Power
Supply
Internal 5 V Line
Internal 24 V Line
Internal 5 V Line
Internal 24 V Line
Power
Supply
Expansion Interface
Side
Expansion Interface
Remote Master Module
(FC6A-EXM1M)
Expansion Interface
Remote Slave Module
(FC6A-EXM1S)
Power
Supply