Power Supply Specifications And Example Of External Wiring; Grounding; Cable End Treatment And Tightening Torque; Input Specifications And External Wiring - Mitsubishi Electric FX3U-32MR/ES User Manual

3.1 Wiring
3.1.1

Cable end treatment and tightening torque

For the terminals of FX series PLC, M3 screws are used.
3U
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 exceeding the specified torque.
Failure to do so may cause equipment failures or malfunctions.
 When one wire is connected to one terminal
φ3.2 (0.13")
Terminal Solderless
screw terminal
6.2 mm (0.24")
or less
φ3.2 (0.13")
6.2 mm (0.24")
Terminal
or less
<Reference>
Terminal Pressure
Type No. Certification
Manufacturer Bonding Tool
JAPAN
FV1.25-B3A
SOLDERLESS
UL Listed YA-1 (JST)
TERMINAL MFG
CO LTD (JST) FV2-MS3
 When two wires are connected to one terminal
φ3.2 (0.13")
Terminal Solderless
6.2 mm (0.24")
screw terminal
or less
6.3 mm (0.25")
or more
φ3.2 (0.13")
Terminal
6.2 mm (0.24")
or less
6.3 mm (0.25")
or more
<Reference>
Terminal Pressure
Type No. Certification
Manufacturer Bonding Tool
JAPAN
SOLDERLESS
FV1.25-B3A UL Listed YA-1 (JST)
TERMINAL MFG
CO LTD (JST)
3.1.2 Removal and installation of quick-release terminal
block
Removal Unscrew the terminal block mounting screw [both right
and left screws] evenly, and remove the terminal block.
Installation Place the terminal block in the specified position, and
tighten the terminal block mounting screw evenly [both
right and left screws].
Tightening torque 0.4 to 0.5 Nm
Do not tighten the terminal block mounting screws
exceeding the specified torque.
Failure to do so may cause equipment failures or
malfunctions.
*
( ) Pay attention so that the center of the terminal block
is not lifted.
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 FX
Series User's Manual - Hardware Edition.
3U
3.2.1 Power supply specifications
[Main unit, Input/output extension units]
Specification
Item
DC power type
AC power type
*
(
Supply voltage 100 - 240 V AC 24 V DC
16.8 to 28.8 V DC
Allowable
Main unit
*
( 5)
supply
85 to 264 V AC
voltage
FX -32E, 24 V DC +20 %,
2N
range
FX 2N -48E -30 %
Rated frequency 50/60 Hz
Operation can be
Operation can be
continued upon
continued upon
occurrence of
Allowable instantaneous occurrence of
instantaneous
power failure time instantaneous
power failure for
power failure for 5
10 ms or less.
ms or less.
*
( 4)
FX -16M to
3U
250 V 3.15 A
32M ( * 7)
FX -48M to
Power 3U
250 V 5 A
128M
fuse
FX -32E 250 V 3.15 A
2N
FX 2N -48E 250 V 5 A 250 V 5 A
30 A max. 5 ms
or less/100 V AC 35 A max. 0.5 ms
Main unit
65 A max. 5 ms or less/24 V DC
or less/200 V AC
Rush
current
40 A max. 5 ms
FX 2N -32E, or less/100 V AC
FX -48E 60 A max. 5 ms
2N
or less/200 V AC
FX -16M 30 W 25 W
3U
FX -32M 35 W 30 W
3U
FX -48M 40 W 35 W
3U
Power
FX -64M 45 W 40 W
3U
consumption
* FX -80M 50 W 45 W
( 1) 3U
FX -128M 65 W
3U
FX -32E 30 W
2N
FX -48E 35 W 30 W
2N
FX -16M to
3U
400 mA or less
32M
24 V DC
service FX -48M to
3U
600 mA or less
power 128M
supply ( * 2)
FX -32E 250 mA
2N
FX -48E 460 mA
2N
5 V DC Main unit 500 mA or less
builtin
FX -32E
2N
power
690 mA or less
*
supply ( 3)
FX -48E
2N
*
( 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 FX
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
6)
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 FX
Series User's Manual - Hardware Edition.
3U
-
*
( 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 DC 16.8 to 19.2 V, the connectable
extension equipment decreases. The following manual shows
further information.
Refer to FX
Series User's Manual - Hardware Edition.
3U
*
( 6) When attaching high-speed input/output special adapter
(FX -4HSX-ADP, FX -2HSY-ADP) and special function
3U 3U
block (FX -3A, FX -2AD, FX
0N 2N
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 FX
Series User's Manual - Hardware Edition.
3U
-
*
( 7) 250 V 5 A is specified for the power fuse of FX
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.
PLC
Main unit
-
L
( * )
N
Input/output
extension
Fuse
- unit
L
-
N
MC
-
( * ) Class D grounding
-
See section 3.3 for
details.
-
-
Power supply for loads connected
to PLC output terminals
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.
PLC
Series User's Manual -
3U
Main unit
Input/output
extension
unit
*
( ) Class D grounding
See section 3.3 for
details.
3.3

Grounding

-2DA), the number of
2N
Ground the PLC as stated below.
 Perform class D grounding. (Grounding resistance: 100  or
less)
 Ground the PLC independently if possible.
-32MR/UA1.
3U
If it cannot be grounded independently, ground it jointly as shown
below.
Another
PLC
equipment
100 to 240 V AC
Independent grounding
(Best condition)
 Use ground wires thicker than AWG14 (2 mm
Breaker
 Position the grounding point as close to the PLC as possible to
Power on
decrease the length of the ground wire.
Emer-
gency 3.4

Input specifications and external wiring

PL
MC
As for the details of the input specifications and external wiring, refer
MC
to the following manual.
Refer to FX
3.4.1 Input specifications (24 V DC input type)
Item
MC
FX -8ER
2N
FX -16M,
3U
FX -8EX
2N
DC FX -32M,
3U
FX -16EX,
power 2N
Number of
FX -32E
supply 2N
input
points
FX -48M,
3U
FX -48E
2N
DC AC
FX -64M
3U
FX -80M
3U
FX 3U -128M
24 V DC
Circuit protector
( * )
Power on
Emer-
gency
PL
MC
MC
Fuse
MC MC
Power supply for loads connected
to PLC output terminals
Another Another
PLC PLC
equipment equipment
Shared grounding Common grounding
(Good condition) (Not allowed)
2
).
Series User's Manual - Hardware Edition.
3U
Specification
4 points (8 points) ( * 1)
8 points
16 points
24 points
32 points
40 points
64 points