Example Of Output Wiring; Terminal Block Layouts - Mitsubishi MELSEC-F FX 3U Series Hardware Manual

3.5.3

Example of output wiring

Load
Y000
Y001
Fuse
COM1
24V DC
Load
Y010
Y011
Fuse
COM2
PLC
100V AC
3.5.4 Cautions in external wiring
Protection circuit for load short-circuiting
When a load connected to the output terminal short-circuits, the
printed circuit board may be burnt out. Fit a protective fuse on the
output circuit.
Load
Y
Fuse
100V AC
COM
PLC
Protection circuit of contact when inductive load is used
The relay output circuit does not have a protection circuit.
When an inductive load is connected, a surge-absorbing contact
protection circuit should be inserted to prolong life and reduce noise.
1) DC circuit
Connect a diode in parallel with the load.
U s e a d i o d e ( f o r c o m m u t a t i o n ) h a v i n g t h e f o l l o w i n g
specifications.
Item Standard
Reverse dielectric strength Over 5 times the load voltage
Forward current Load current or more
Inductive
PLC output
load
contact
Diode
(for commutation)
2) AC circuit
Connect a surge absorbing element (CR composite part, i.e
surge killer and spark killer), such as a surge absorber, having
the following specifications in parallel with the load.
Item Standard
240V AC or less ("250 VAC or less"
Rated voltage
if not a CE, UL, cUL compliant item)
Electrostatic capacity Approx. 0.1µF
Resistance value Approx. 100 to 200Ω
Inductive
PLC output
load
contact
Surge absorber
Reference
Manufacturer Model name
Marcon Electronics Co., Ltd. Model RFD2E104K
Okaya Electric Industries Co.,
CR-10201
Ltd.
Rubycon Corporation Model 250MCRA104100M B0325
Mechanical interlock
Loads, such as contactors for normal and reverse rotations, that
must not be turned on simultaneously should be provided with an
interlock in the PLC program and an external interlock as shown
below.
Limit of
normal
PLC output
Interlock rotation
contact
Limit of
PLC output
reverse
contact
rotation
Common mode
Use output contacts (*) of the PLC in the common mode.
*
Bad
*
*
Good
*
4.

Terminal block layouts

FX -16MR/
3U
S/S 0V X0 X2 X4 X6
L N 24V X1 X3 X5 X7
Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7
Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7
FX -32MR/
3U
S/S 0V X0 X2 X4 X6 X10 X12 X14
L N 24V X1 X3 X5 X7 X11 X13
Y0 Y2 Y4 Y6 Y10 Y12 Y14
COM1 Y1 Y3 COM2 Y5 Y7 COM3 Y11 Y13 COM4
FX -48MR/
3U
S/S 0V X0 X2 X4 X6 X10 X12 X14
L N 24V X1 X3 X5 X7 X11 X13
Y0 Y2 Y4 Y6 Y10 Y12 Y14
Y1 Y3 Y5 Y7 Y11 Y13
COM1 COM2 COM3 COM4
FX -64MR/
3U
S/S 0V 0V X0 X2 X4 X6 X10 X12
L N 24V 24V X1 X3 X5 X7 X11
Y0 Y2 Y4 Y6 Y10 Y12 Y14
Y1 Y3 Y5 Y7 Y11 Y13
COM1 COM2 COM3 COM4
FX -80MR/
3U
S/S 0V 0V X0 X2 X4 X6 X10 X12
L N 24V 24V X1 X3 X5 X7 X11
X20 X22
X17 X21
Y0 Y2 Y4 Y6 Y10 Y12 Y14
Y1 Y3 Y5 Y7 Y11 Y13
COM1 COM2 COM3 COM4
X16
X15 X17
Y16
Y15 Y17
X16 X20 X22 X24 X26
X15 X17 X21 X23 X25 X27
Y16 Y20 Y22 Y24 Y26
COM5
Y15 Y17 Y21 Y23 Y25 Y27
X14 X16 X20 X22 X24 X26 X30 X32 X34 X36
X13 X15 X17 X21 X23 X25 X27 X31 X33 X35 X37
Y16 Y20 Y22 Y24 Y26 Y30 Y32 Y34 Y36
COM6
Y15 Y17 Y21 Y23 Y25 Y27 Y31 Y33 Y35 Y37
COM5
X14 X16
X13 X15
X24 X26 X30 X32 X34 X36 X40 X42 X44
X23 X25 X27 X31 X33 X35 X37 X41 X43
Y30 Y32 Y34 Y36 Y40 Y42 Y44
Y27 Y31 Y33 Y35 Y37 Y41 Y43
COM6 COM7
Y16 Y20 Y22 Y24 Y26
Y15 Y17 Y21 Y23 Y25
COM5
X46
X45 X47
Y46
Y45 Y47