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 Nm.
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
When two wires are connected to one terminal
3.1.2 European type terminal block
1) Wire size
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.
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 Nm.
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.
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).
3.2 Power supply specifications and external wiring
3.2.1 Power supply specifications [CPU module, FX5-32E]
*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).
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.
No. of wire
per terminal
Wire size
Solid wire/Stranded wire
Ferrules with insulating sleeve
1 AWG24 to 20 AWG24 to 20
2AWG24
Manufacturer Model Caulking tool
Phoenix Contact GmbH & Co. KG AI 0.5-6WH CRIMPFOX 6
WIRING PRECAUTIONS
3.2
6.2 mm or less
Terminal
screw
Solderless
terminal
6.2 mm or less
3.2
Terminal
6.3 mm or more
6.3 mm or more
6.2 mm or less
6.2 mm or less
3.2
3.2
Terminal
Terminal
screw
Solderless
terminal
5 mm
6 mm
10.5 to 12 mm
2 to 2.5 mm
Insulating sleeve
Contact area
(Crimp area)
Manufacturer Model names
Phoenix Contact GmbH & Co. KG SZS 0.4×2.5
Item
Specification
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
Allowable instantaneous
power failure time
Operation can be
continued upon
occurrence of
instantaneous power
failure for 10 ms or less.
*1
Operation can be
continued upon
occurrence of
instantaneous power
failure for 5 ms or less.
Power fuse
FX5U-32M,
FX5-32E
250 V 3.15 A Time-lag Fuse
FX5U-64M,
FX5U-80M
250 V 5 A Time-lag Fuse
Rush current
FX5U-32M
25 A max. 5 ms or less/100 V AC
50 A max. 5 ms or less/200 V AC
50 A max. 0.5 ms or
less/24 V DC
FX5U-64M,
FX5U-80M
30 A max. 5 ms or less/100 V AC
60 A max. 5 ms or less/200 V AC
65 A max. 2.0 ms or
less/24 V DC
FX5-32E
30 A max. 5 ms or less/100 V AC
65 A max. 5 ms or less/200 V AC
50 A max. 0.5 ms or
less/24 V DC
Power
consumption
*2
FX5U-32M 30 W 30 W
FX5U-64M 40 W 40 W
FX5U-80M 45 W 45 W
FX5-32E 25 W 25 W
24 V DC power
supply
capacity
*3
FX5U-32M
400 mA (480 mA)
*4
[300 mA (380 mA)]
*4*5
480 mA (360 mA
*6
)
FX5U-64M
600 mA (740 mA)
*4
[300 mA (440 mA)]
*4*5
740 mA (530 mA
*6
)
FX5U-80M
600 mA (770 mA)
*4
[300 mA (470 mA)]
*4*5
770 mA (560 mA
*6
)
FX5-32E
250 mA (310 mA)
*4
310 mA
5 V DC built-in
power supply
capacity
*7
FX5U-32M 900 mA
900 mA (775 mA
*6
)
FX5U-64M,
FX5U-80M
1100 mA
1100 mA (975 mA
*6
)
FX5-32E 965 mA
0.4 mm
2.5 mm
With
straight tip
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
details of wiring work, refer to Section 3.1.
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.
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
).
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)
3.4.2 Examples of input wiring [AC power type] (when 24 V DC
service power supply is used)
3.4.3 Examples of input wiring [DC power type]
3.5 Relay output specifications and external wiring
3.5.1 Relay output specifications
Item Specification
Input signal voltage 24 V DC 20%, -15%
Input
impedance
CPU
module
X0 to X17 4.3 k
X20 and
subsequent
5.6 k
FX5 I/O module 5.6 k
Power on
100 to 240 V AC
PL
MC
MC
DC AC
MCMC
Breaker
*
L
N
[1]
[1]: CPU module, FX5-32E
Emer-
gency
DC
power
supply
Power supply for loads connected
to CPU module output terminals
Fuse
*
Class D grounding
See section 3.3 for
details.
Power on
24 V DC
PL
MC
MC
MCMC
Circuit protector
*
[1]
[1]: CPU module, FX5-32E
Emer-
gency
Power supply for loads connected
to CPU module output terminals
Fuse
*
Class D grounding
See section 3.3 for
details.
PLC
Other
equipment
PLC
Other
equipment
PLC
Other
equipment
Shared grounding
(Good condition)
Common grounding
(Not allowed)
Independent grounding
(Best condition)
Input signal
current
CPU
module
X0 to X17 5.3 mA/24 V DC
X20 and
subsequent
4.0 mA/24 V DC
FX5 I/O module 4.0 mA/24 V DC
ON input
sensitivity
current
CPU
module
X0 to X17 3.5 mA or more
X20 and
subsequent
3.0 mA or more
FX5 I/O module 3.0 mA or more
OFF input sensitivity current 1.5 mA or less
Input response time
Refer to MELSEC iQ-F FX5U
User's Manual (Hardware)
Input signal form
Sink input
No-voltage contact input NPN
open collector transistor
Source input
No-voltage contact input PNP
open collector transistor
Input operation display LED on panel turns on when input.
Item Specification
External power supply
30 V DC or less
240 V AC or less ("250 V AC or less"
if not a
CE, UL, cUL compliant item)
Item Specification
L
N
S/S
0V
24V
X0
X1
X2
X3
L
N
S/S
0V
24V
X0
X1
X2
X3
1. Sink input type 2. Source input type
S/S
X0
S/S
X0
*
*
100 to 240 V AC
Fuse
3-wire type
sensor
100 to 240 V AC
Fuse
3-wire type
sensor
*
Class D grounding
See section 3.3 for details.
[1] [1]
[2] [2]
[1]: CPU module, FX5-32E [2]: Input module
S/S
X0
X1
X2
X3
S/S
X0
X1
X2
X3
1. Sink input type 2. Source input type
S/S
X0
S/S
X0
*
*
24 V DC 24 V DC
Fuse
3-wire type
sensor
Fuse
3-wire type
sensor
*
Class D grounding
See section 3.3 for details.
[1] [1]
[2]
[2]
[1]: CPU module, FX5-32E [2]: Input module
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