Mitsubishi Electric MELSEC iQ-F FX5U Hardware Manual page 3

WIRING PRECAUTIONS
 Connect the power supply wiring to the dedicated terminals described in
this manual.
If an AC power supply is connected to a DC input/output terminal or DC
power supply terminal, the PLC will burn out.
 Do not wire vacant terminals externally.
Doing so may damage the product.
 Make sure to observe the following precautions in order to prevent any
damage to the machinery or accidents due to malfunction of the PLC
caused by abnormal data written to the PLC due to the effects of noise.
- Do not bundle the power line, control line and communication cables
together with or lay them close to the main circuit, high-voltage line,
load line or power line. As a guideline, lay the power line, control line
and communication cables at least 100 mm away from the main circuit,
high-voltage line, load line or power line.
- Ground the shield of the shielded wire or shielded cable at one point on the
PLC. However, do not use common grounding with heavy electrical systems.
 Ground the shield of the analog input/output cable at one point on the
signal receiving side.
However, do not use common grounding with heavy electrical systems.
3.1 Cable end treatment and tightening torque
3.1.1 Screw type terminal block
For the terminals of FX5U CPU module and I/O module, M3 screws are used.
The electric wire ends should be treated as shown below.
Tighten the screws to a torque of 0.5 to 0.8 Nm.
Do not tighten terminal screws with a torque outside the above-mentioned range.
Failure to do so may cause equipment failures or malfunctions.
 When one wire is connected to one terminal
3.2
Terminal Solderless
screw terminal
6.2 mm or less
3.2
Terminal
6.2 mm or less
 When two wires are connected to one terminal
3.2
Terminal Solderless
6.2 mm or less
screw terminal
6.3 mm or more
3.2
Terminal
6.2 mm or less
6.3 mm or more
3.1.2 European type terminal block
1) Wire size
Wire size
No. of wire
per terminal
Solid wire/Stranded wire Ferrules with insulating sleeve
1 AWG24 to 20 AWG24 to 20

2 AWG24
2) Treatment of wire ends
Strip the coating of strand wire and twist the cable core before connecting
it, or strip the coating of single wire before connecting it. An alternative
connection is to use a ferrule with insulating sleeve.
Insulating sleeve Contact area
(Crimp area)
6 mm
5 mm
2 to 2.5 mm
10.5 to 12 mm
Manufacturer Model Caulking tool
Phoenix Contact GmbH & Co. KG AI 0.5-6WH CRIMPFOX 6
When using a wire ferrule with an insulating sleeve, choose a wire with
proper cable sheath referring to the above outside dimensions, otherwise
the wire cannot be inserted easily.
Tighten the screws to a torque of 0.22 to 0.25 Nm.
Do not tighten terminal screws exceeding with a torque outside the above-
mentioned range.
Failure to do so may cause equipment failures or malfunctions.
3) Tool
For tightening the terminal, use a
commercially available small
screwdriver having a straight
form that is not widened toward
the end as shown right.
0.4 mm 2.5 mm
Note:
If the diameter of screwdriver grip is too small, tightening torque may not be
achieved. To achieve the appropriate tightening torque shown in the table
above, use the following screwdriver or appropriate replacement (grip
diameter: approximately 25 mm).
Manufacturer Model names
Phoenix Contact GmbH & Co. KG SZS 0.4×2.5
3.2 Power supply specifications and external wiring
3.2.1 Power supply specifications [CPU module, FX5-32E
Specification
Item
AC power type DC power type
Rated voltage 100 to 240 V AC 24 V DC
Voltage fluctuation range 85 to 264 V AC 16.8 to 28.8 V DC

Frequency rating 50/60 Hz
Operation can be
Operation can be
continued upon
continued upon
Allowable instantaneous
occurrence of
occurrence of
power failure time
instantaneous power instantaneous power
*1
failure for 5 ms or less.
failure for 10 ms or less.
FX5U-32M,
250 V 3.15 A Time-lag Fuse
FX5-32E
Power fuse
FX5U-64M,
250 V 5 A Time-lag Fuse
FX5U-80M
25 A max. 5 ms or less/100 V AC 50 A max. 0.5 ms or
FX5U-32M
50 A max. 5 ms or less/200 V AC less/24 V DC
FX5U-64M, 30 A max. 5 ms or less/100 V AC 65 A max. 2.0 ms or
Rush current
FX5U-80M 60 A max. 5 ms or less/200 V AC less/24 V DC
30 A max. 5 ms or less/100 V AC 50 A max. 0.5 ms or
FX5-32E
65 A max. 5 ms or less/200 V AC less/24 V DC
FX5U-32M 30 W 30 W
FX5U-64M 40 W 40 W
Power
*2
consumption
FX5U-80M 45 W 45 W
FX5-32E 25 W 25 W
*4
400 mA (480 mA)
FX5U-32M
480 mA (360 mA
*4*5
[300 mA (380 mA)]
*4
600 mA (740 mA)
24 V DC power
FX5U-64M
740 mA (530 mA
*4*5
supply [300 mA (440 mA)]
*3
capacity
*4
600 mA (770 mA)
FX5U-80M
770 mA (560 mA
*4*5
[300 mA (470 mA)]
FX5-32E *4 310 mA
250 mA (310 mA)
FX5U-32M 900 mA 900 mA (775 mA
5 V DC built-in
FX5U-64M,
power supply
1100 mA
1100 mA (975 mA
FX5U-80M
*7
capacity
FX5-32E 965 mA
*1 When the supply voltage is 200 V AC, the time can be change to 10 to
100 ms by editing the user program.
*2 This item shows value when all 24 V DC power supplies are used in the
maximum configuration connectable to the CPU module. (The current of
the input circuit is included.)
*3 The AC power type has 24 V DC service power supply, and the DC
power type has 24 V DC built-in power supply. When I/O modules are
connected, they consume current from the power supply.
*4 Capacity of 24 V DC service power supply when service power supply is
used for the input circuit. The value in () is capacity of 24 V DC service
power supply when external power supply is used for the input circuit.
*5 The value in [] is capacity of 24 V DC power supply in the case where
operating ambient temperature is lower than 0.
*6 The value in () is capacity of power supply when the supply voltage is
16.8 to 19.2 V DC.
*7 Power is supplied to I/O modules, intelligent function modules, expansion
adapters and expansion boards.
The following manual shows further information.
Refer to MELSEC iQ-F FX5U User's Manual (Hardware).
3.2.2 Example of external wiring [AC power type]
100 to 240 V AC power is supplied to the CPU module and FX5-32E. For the
With
details of wiring work, refer to Section 3.1.
straight tip
[1]
Fuse
L
*
 ]
N
MC
* Class D grounding
See section 3.3 for
details.
Power supply for loads connected
[1]: CPU module, FX5-32E to CPU module output terminals
3.2.3 Example of external wiring [DC power type]
24 V DC power is supplied to the CPU module and FX5-32E. For the details
of wiring work, refer to Section 3.1.
[1]
Fuse
*
*6
)
MC
*6
)
* Class D grounding
See section 3.3 for
*6
)
details.
Power supply for loads connected
[1]: CPU module, FX5-32E to CPU module output terminals
3.3 Grounding
*6
)
Ground the PLC as stated below.
 Perform class D grounding. (Grounding resistance: 100  or less)
*6
)  Ground the PLC independently if possible.
If it cannot be grounded independently, ground it jointly as shown below.
Other Other
PLC PLC
equipment equipment
Independent grounding Shared grounding
(Best condition) (Good condition)
 Use ground wires thicker than AWG14 (2 mm
 Bring the grounding point close to the PLC as much as possible so that the
ground cable can be shortened.
3.4 Input specifications and external wiring
3.4.1 Input specifications (24 V DC input type)
Item
Input signal voltage 24 V DC 20%, -15%
X0 to X17 4.3 k
CPU
Input X20 and
module
5.6 k
impedance subsequent
FX5 I/O module 5.6 k
Item
CPU
Input signal
module
100 to 240 V AC
current
FX5 I/O module
Breaker
CPU
ON input
Power on module
sensitivity
Emer-
current
gency
FX5 I/O module
PL
MC
OFF input sensitivity current
MC
Input response time
Input signal form
MC
Input operation display
3.4.2 Examples of input wiring [AC power type] (when 24 V DC
service power supply is used)
DC
power
1. Sink input type
supply
[1]
Fuse
L
DC AC
N
100 to 240 V AC
S/S
0V
24V
24 V DC
X0
Circuit protector X1
X2
Power on
X3
Emer-
gency
[2]
PL
MC
S/S
X0
MC
* Class D grounding
See section 3.3 for details.
[1]: CPU module, FX5-32E
3.4.3 Examples of input wiring [DC power type]
MC
1. Sink input type
[1]
S/S
X0
Other
X1
PLC
equipment
X2
X3
Common grounding
(Not allowed) [2]
2
). S/S
X0
* Class D grounding
See section 3.3 for details.
[1]: CPU module, FX5-32E
Specification
3.5 Relay output specifications and external wiring
3.5.1 Relay output specifications
Item
External power supply
Specification
X0 to X17 5.3 mA/24 V DC
X20 and
4.0 mA/24 V DC
subsequent
4.0 mA/24 V DC
X0 to X17 3.5 mA or more
X20 and
3.0 mA or more
subsequent
3.0 mA or more
1.5 mA or less
Refer to MELSEC iQ-F FX5U
User's Manual (Hardware)
No-voltage contact input NPN
Sink input
open collector transistor
No-voltage contact input PNP
Source input
open collector transistor
LED on panel turns on when input.
2. Source input type
[1]
Fuse
L
* *
N
100 to 240 V AC
S/S
0V
24V
X0
X1
3-wire type 3-wire type
X2
sensor
sensor
X3
[2]
S/S
X0
[2]: Input module
2. Source input type
[1]
Fuse Fuse
*
*
24 V DC 24 V DC
S/S
X0
X1
3-wire type 3-wire type
X2
sensor
X3
sensor
[2]
S/S
X0
[2]: Input module
Specification
30 V DC or less
240 V AC or less ("250 V AC or less" if not a
CE, UL, cUL compliant item)