3.2 Power supply specifications and example of
external wiring
As for the details of the power supply specifications and example of
external wiring, refer to the following manual.
Refer to FX3U Series User's Manual - Hardware Edition.
3.2.1 Power supply specifications
[Main unit, Input/output extension units]
(
*
1) Does not include the power consumption of extension units/
special extension units, and of the extension blocks/special
extension blocks connected to those units.
For the power (current) consumed by the extension units/
blocks for input/output, refer to FX3U Series User's Manual -
Hardware Edition.
For the power consumed by the special extension units/
blocks, refer to the appropriate manual.
(
*
2) When input/output extension blocks are connected, the 24 V
DC service power supply is consumed by the blocks, and the
current value to be used by the main unit is reduced.
The AC power (AC input) type and DC power type do not have
a service power supply.
(
*
3) Cannot be used to supply power to an external destination.
The power is supplied to input/output extension blocks,
special extension blocks, special adapters and expansion
boards.
The following manual shows further information.
Refer to FX3U Series User’s Manual - Hardware Edition.
(
*
4) When the supply voltage is 200 V AC, the time can be
changed to 10 to 100 ms by editing the user program.
(
*
5) When supply voltage is 16.8-19.2 V DC, the connectable
extension equipment decreases. The following manual shows
further information.
Refer to FX
3U Series User’s Manual - Hardware Edition.
(
*
6) When attaching high-speed input/output special adapter
(FX3U-4HSX-ADP, FX3U-2HSY-ADP) and special function
block (FX0N-3A, FX2N-2AD, FX2N-2DA), the number of
connectable modules to the main unit is limited, due to the
current consumption (internal 24 V DC) at startup. The
following manual shows further information.
Refer to FX3U Series User’s Manual - Hardware Edition.
(
*
7) 250 V 5 A is specified for the power fuse of FX3U-32MR/UA1.
3.2.2 Example of external wiring (AC power type)
100 to 240 V AC power is supplied to the main unit and input/output
extension units. For the details of wiring work, refer to section 3.1.
Item
Specification
AC power type
DC power type
(
*
6)
Supply voltage 100 to 240 V AC 24 V DC
Voltage
fluctuation
range
Main unit
-15%, +10%
-30%, +20% (
*
5)
FX2N-32E,
FX
2N-48E
-30%, +20%
Rated frequency 50/60 Hz -
Allowable instantaneous
power failure time
Operation can be
continued upon
occurrence of
instantaneous
power failure for
10 ms or less.
(
*
4)
Operation can be
continued upon
occurrence of
instantaneous
power failure for 5
ms or less.
Power
fuse
FX3U-16M to
32M (
*
7)
250 V 3.15 A
FX3U-48M to
128M
250 V 5 A
FX2N-32E 250 V 3.15 A -
FX2N-48E 250 V 5 A 250 V 5 A
Rush
current
Main unit
30 A max. 5 ms
or less/100 V AC
65 A max. 5 ms
or less/200 V AC
35 A max. 0.5 ms
or less/24 V DC
FX2N-32E,
FX2N-48E
40 A max. 5 ms
or less/100 V AC
60 A max. 5 ms
or less/200 V AC
-
Power
consumption
(
*
1)
FX3U-16M 30 W 25 W
FX3U-32M 35 W 30 W
FX3U-48M 40 W 35 W
FX3U-64M 45 W 40 W
FX3U-80M 50 W 45 W
FX3U-128M 65 W -
FX2N-32E 30 W -
FX2N-48E 35 W 30 W
24 V DC
service
power
supply (
*
2)
FX3U-16M to
32M
400 mA or less -
FX3U-48M to
128M
600 mA or less -
FX2N-32E 250 mA -
FX2N-48E 460 mA -
5 V DC
builtin
power
supply (
*
3)
Main unit 500 mA or less
FX2N-32E
690 mA or less
FX2N-48E
Power on
100 to 240 V AC
PL
MC
MC
DC AC
MCMC
Breaker
(
*
)
L
N
PLC
L
N
Main unit
Input/output
extension
unit
Emer-
gency
DC
power
supply
Power supply for loads connected
to PLC output terminals
Fuse
(
*
)
Class D grounding
See section 3.3 for
details.
3.2.3 Example of external wiring (DC power type)
24 V DC power is supplied to the main unit and input/output
extension unit. For the details of wiring work, refer to section 3.1.
3.3 Grounding
Ground the PLC as stated below.
Perform class D grounding. (Grounding resistance: 100 or
less)
Ground the PLC independently if possible.
If it cannot be grounded independently, ground it jointly as shown
below.
Use ground wires thicker than AWG14 (2 mm
2
).
Position the grounding point as close to the PLC as possible to
decrease the length of the ground wire.
3.4 Input specifications and external wiring
As for the details of the input specifications and external wiring, refer
to the following manual.
Refer to FX3U Series User's Manual - Hardware Edition.
3.4.1 Input specifications (24 V DC input type)
(
*
1) Each value inside ( ) indicates the number of occupied points.
Item Specification
Number of
input
points
FX2N-8ER
4 points (8 points) (
*
1)
FX3U-16M,
FX2N-8EX
8 points
FX3U-32M,
FX2N-16EX,
FX2N-32E
16 points
FX3U-48M,
FX2N-48E
24 points
FX3U-64M 32 points
FX3U-80M 40 points
FX3U-128M 64 points
24 V DC
PL
Power on
Emer-
gency
MC
MC
Power supply for loads connected
to PLC output terminals
MCMC
(
*
)
Class D grounding
See section 3.3 for
details.
Circuit protector
Fuse
(
*
)
PLC
Main unit
Input/output
extension
unit
PLC
Another
equipment
PLC
Another
equipment
PLC
Another
equipment
Shared grounding
(Good condition)
Common grounding
(Not allowed)
Independent grounding
(Best condition)
Input connecting type Refer to FX3U Series User's
Manual -
Hardware Edition
Input form
Input
signal
voltage
Main units
AC power
Type
24 V DC 10 %, -10 %
DC power
Type
24 V DC 20 %, -30 %
Input/
output
extension
unit
AC power
Type
24 V DC 10 %, -10 %
DC power
Type
24 V DC 20 %, -30 %
Input
impedance
Main units
X000 to
X005
3.9 k
X006,
X007
3.3 k
X010 or
more
4.3 k
(Does not apply to FX
3U-
16M
.)
Input/output
extension unit/block
4.3 k
Input
signal
current
Main units
X000 to
X005
6 mA/24 V DC
X006,
X007
7 mA/24 V DC
X010 or
more
5 mA/24 V DC
(Does not apply to FX3U-
16M.)
Input/output
extension unit/block
5 mA/24 V DC
ON input
sensitivity
current
Main units
X000 to
X005
3.5 mA or more
X006,
X007
4.5 mA or more
X010 or
more
3.5 mA or more
(Does not apply to FX3U-
16M
.)
Input/output
extension unit/block
3.5 mA or more/24 V DC
OFF input sensitivity current 1.5 mA or less
Input response time Approx. 10 ms
Input signal form
(Input sensor form)
Sink input:
No-voltage contact input
NPN open
collector transistor
Source input:
No-voltage contact input
PNP open
collector transistor
Input circuit insulation Photocoupler insulation
Input operation display
LED on panel lights when
photocoupler is driven.
Item Specification
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