78
(18)
Model
Rated Load
Voltage
Pin Arrangement
Pin
No.
Signal
Name
(F
H
)
Pin
No.
Signal
Name
(F
H
)
A1S42Y
12/24 VDC
B12
YD0
A12
YD1
B11
YD2
A11
YD3
B10
YD4
A10
YD5
B9
YD6
A9
YD7
B8
YSCN0
A8
YSCN1
B7
YSCN2
A7
YSCN3
B6
YSCN4
A6
YSCN5
B5
YSCN6
A5
YSCN7
B4
Vacant
A4
Vacant
B3
12/24
VDC
A3
12/24
VDC
B2
0V
A2
0V
B1
Vacant
A1
Vacant
*1
*2
The fuse in the output module is
provided to prevent the external wiring
from burning in the event of a short
circuit in the module’s output.
Consequently, it may not be able to
protect output devices.
If an output device is damaged in a
failure mode other than a short circuit,
the fuse might not be blown.
The "ERR." LED will alxo come ON
when the external power supply is cut.
*3
Mount the resistors to limit
LED current externally to the
A1S42Y.
*4
The power supply voltage (12/24VDC) is
applied in the LED’s reverse direction.
If the peak inverse voltage is insufficient,
connect protective diodes in series with
each of the LEDs.
face of the module
Seen from front
A1
B1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
12
A
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
circuit
control
Internal
Pin No.
Output terminals
1/8th duty
scanning at
Internal
circuit
control
Internal
R
R
R
LED current
Resistors to limit
*3
A1S42Y
DC12/24V
Y07 Y0F Y17 Y1F Y27 Y2F Y37 Y3F
Y06 Y0E Y16 Y1E Y26 Y2E Y36 Y3E
Y05 Y0D Y15 Y1D Y25 Y2D Y35 Y3D
Y04 Y0C Y14 Y1C Y24 Y2C Y34 Y3C
Y03 Y0B Y13 Y1B Y23 Y2B Y33 Y3B
Y02 Y0A Y12 Y1A Y22 Y2A Y32 Y3A
Y01 Y09 Y11 Y19 Y21 Y29 Y31 Y39
Y00 Y08 Y10 Y18 Y20 Y28 Y30
B2A2
B3A3
YSCN7
YSCN6
YSCN5
YSCN4
YSCN3
YSCN2
YSCN1
YSCN0
YD7
YD6
YD5
YD4
YD3
YD2
YD1
YD0
A5
B5
A6
B6
A7
B7
A8
B8
A9
B9
A10
B10
A11
B11
A12
B12
Y38
Содержание MELSEC-A A1SCPUC24-R2
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