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Indicator light
D-A80C without
indicator light
Most sensitive position
Lead wire
with connector
Reed Switch
Rail Mounting Style
D-A73C/D-A80C
Auto Switch Internal Circuit
D-A73C
D-A80C
Auto Switch Specifications
Dimensions
1. Confirm that the connector is appropriately
tightened. If tightened insufficiently, the
waterproof performance will deteriorate.
2. Refer to Best Pneumatics Vol. 6/7/8/9/10
for the details.
Auto switch model
0.5
3
5
12
54
84
12
54
84
D-A73C
D-A80C
Lead wire length
(m)
D-A73C (With indicator light)
PLC: Abbreviation of Programmable Logic Controller
Auto switch model
Applicable load
Load voltage
Load current range
Contact protection circuit
Internal voltage drop
Indicator light
D-A73C
Relay, PLC
24 VDC
5 to 40 mA
None
2.4 V or less
Red LED lights when ON.
D-A80C
Relay, IC circuit, PLC
50 mA
None
1 Ω or less (Including lead wire length of 3 m)
D-A80C (Without indicator light)
Auto switch model
Applicable load
Load voltage
Maximum load current
Contact protection circuit
Internal resistance
24 V
AC
DC
Blue
LED
Reed switch
Resistor
Zener diode
Brown
OUT
(–)
Blue
OUT (+)
Brown
Choke coil
Contact protection box
CD-P12
Zener
diode
Reed switch
Contact
protection
box
CD-P11
CD-P12
OUT
(±)
Brown
ȁ
OUT ( )
Blue
Connector
Note 1) Operating load is an induction load.
Note 2) Wiring to the load is 5 m or longer.
Use the contact protection box in any of the
above listed situations. The contact point life
may decrease. (Refer to page 12-13-5 for
contact protection box.)
(4)
• Lead wire — Oil resistant vinyl heavy-duty cord,
ø3.4, 0.2 mm
2
, 2 cores (Brown, Blue), 0.5 m
Note 1) Regarding the common specifications of the reed switches, refer to page 12-13-5.
Note 2) Regarding the lead wire length, refer to page 12-13-5.
Note 3) Lead wire with connector may be shipped with switch.
Note 4) Under 5 mA, the strength of the indicator light is poor. In some cases, visibility of the
indicator light will not be possible where the output signal is less than 2.5 mA. However,
there is no problem in terms of contact output, when an output signal exceeds 1 mA or
more.
Precautions
Caution
Weight
(g)
±
For details about certified products
conforming to international standards,
visit us at www.smcworld.com.
12-13-9
1st
MHZ
MHF
MHL
MHR
MHK
MHS
MHC
MHT
MHY
MHW
MRHQ
Misc.
D-
20-
12_13_D-.qxd 04.7.6 18:02 Page 13-9
9