Mitsubishi Electric FX3UC-16MT/DSS Hardware Manual page 3

Notes
• When a dust proof sheet is supplied with an extension unit/
block, keep the sheet applied to the ventilation slits during
installation and wiring work.
• To prevent temperature rise, do not install the PLC on a floor, a
ceiling or a vertical surface.
Install it horizontally on a wall as shown in section 2.2.
• Keep a space of 50 mm (1.97") or more between the unit main
body and another device or structure (section 2.2 part A). Install
the unit as far away as possible from high-voltage lines, high-
voltage devices and power equipment. Failure to do so may
cause fire, equipment failures or malfunctions.
2.1 Generic specifications [Main unit]
Item Specification
0 to 55 °C (32 to 131 °F) when operating and -25 to
Ambient
temperature 75 °C (-13 to 167 °F) when stored
Ambient
5 to 95 %RH (no condensation) when operating
humidity
Half
Fre- Accel-
Sweep
ampli-
quency eration
Count for X,
tude
(Hz) 2
Vibration (m/s )
Y, Z: 10
(mm)
resistance
times
( * 1) When 10 to 57 - 0.035
(80 min. in
installed
each
57 to
on DIN
4.9 - direction)
150
rail
Shock
2
(147 m/s Acceleration, Action time: 11 ms, 3 times
resistanc ( * 1)
by half-sine pulse in each direction X, Y, and Z)
By noise simulator at noise voltage of 1,000 Vp-p,
Noise
noise width of 1 μs, rise time of 1ns and period of
resistance
30 to 100 Hz
Dielectric
500 V AC for one
withstand
minute
voltage
Between batch of all terminals
5 MΩ or higher by
and ground terminal
Insulation 500 V DC
resistance insulation
resistance tester
Class D grounding (grounding resistance: 100 Ω or
less) <Common grounding with a heavy electrical
Grounding
system is not allowed.> ( * 2)
Working Free from corrosive or flammable gas and
atmosphere excessive conductive dusts
Working
*
<2000 m ( 3)
altitude
Installation
Inside a control panel (*4)
location
Overvoltage
ΙΙ or less
category
Pollution
2 or less
degree
*
( 1) The criterion is shown in IEC61131-2.
*
( 2) For common grounding, refer to section 3.2.
*
( 3) The PLC cannot be used at a pressure higher than the
atmospheric pressure to avoid damage.
*
( 4) The programmable controller is assumed to be installed in an
environment equivalent to indoor.
2.2 Installation Location
Install the PLC in an environment conforming to the generic
specifications (section 2.1), installation precautions and notes.
→ For more details, refer to FX
Series User's Manual -
3UC
Hardware Edition.
Installation location in enclosure
Space in enclosure
Extension devices can be connected on the left and right sides of the
PLC main unit.
If you intend to add extension devices in the future, keep extra space
on the left and right sides open.
Configuration without extension cable
A
A A
≥ 50 mm
A
A
(1.97")
Configuration with extension cable
A
A
A
A
FX 0N -65EC
FX -30EC
0N
A
Other
equipment
A
FX -CNV-BC
2N A
≥ 50 mm
Other
A
(1.97")
equipment
2.3 Procedures for installing to and detaching from
DIN rail
The main unit can be installed on a DIN46277 rail [35 mm (1.38")
wide].
For detail, refer to the following manual.
→ Refer to FX Series User's Manual - Hardware Edition.
3UC
2.3.1 Installing methods
1) Turn the power supply OFF.
2) Push the DIN rail mounting hooks

of all connected units/blocks as
shown in the figure on the right .
A
A
3) Align the upper side of the DIN
rail mounting groove with the

DIN rail ( in the figure on the
right).
2
4) While pressing the main unit
onto the DIN rail, lock the DIN rail mounting hooks as shown in
the figure below .
B
B
2.3.2 Removal methods
1) Turn the power supply OFF.
2) Disconnect all connected
cables including the power
cable and I/O cable.
3
3) Insert a flathead screwdriver to

the DIN rail mounting hook (
in the figure on the right).
4) Lever the screwdriver slightly
1

toward direction , to pull out
the DIN rail mounting hooks,
allowing them to come off the
DIN rail.
5) Remove the main unit from the

DIN rail ( in the figure on the
right).
6) Push the DIN rail mounting
hooks as shown in the figure on

the right .
4
2.4 Connection of power supply connector
Use the dedicated built-in power connector to supply power to the
main unit.
The power should be supplied to the main unit, FX
extension blocks and FX /FX Series special extension blocks.
2NC 3UC
Some (FX -EX(-T)) of FX
2NC 2NC
require power cable types B and C shown on the right, while others
(FX 2NC -EX(-T)-DS) do not require them. For details, refer to
FX Series User's Manual - Hardware Edition.
3UC
When connecting two or more extension blocks which require power
cables "B" and "C" shown on the right, perform crossover wiring
between the extension blocks using two (upper and lower) power
connectors.
The figure below shows the pin
Main unit
numbers of the power connectors.
Input extension block
1
Main unit
Output extension block
1
Input extension block
2
3 Ground
(Green)
Two power connectors of each
extension block are connected in
parallel inside the block.
A
Accordingly, there is no
1
Red
discrimination between the entrance
Black
side and the exit side of the power
Green
C
supply. Either (upper or lower)
Red
Ground
connector can be connected.
B
Black
At shipment from the factory, a
resin cover is attached to the lower
connector. Connect the upper
connector first. Remove the resin
cover from the lower connector
when performing crossover wiring
for the later block.
(In case of the FX
removal of the connector cover is
unnecessary.)
2
Series I/O
2NC
Series I/O extension blocks
Extension block
(Red)
1 (Red)
(Black)
2 (Black)
-EX(-T)-DS,
2NC