F-30
General-purpose Limit Switch
D4A-
@N
Precautions
■
Correct Use
Mounting
Tightening Torque
To maintain the high sealing capability of the Limit Switch, tighten the
screws for the head and switch body with the following torques:
Head (four 12-mm M4 screws): 1.2 to 1.4 N·m
Switch body (two 20-mm M5 screws): 2.4 to 2.7 N·m
Solderless Terminals
The D4A-
@
N with DPDT double-break incorporates solderless termi-
nals.
Operation
The operating methods, cam and dog shapes, operating frequency,
and overtravel (OT) have a significant effect on the service life and
accuracy of the Limit Switch. The shape of the cam should be as
smooth as possible.
A marginal overtravel (OT) value should be set. The ideal value is the
rated OT value x 0.7.
The actuator should not be remodeled to change the operating posi-
tion.
Connectors
To satisfy IP67, apply sealing tape to the connector conduit.
Appropriate outer diameter of cables is 5.5 to 14 dia.
Use OMRON’s SC-
@
M Series.
Tighten the Connectors to a torque of 1.8 to 2.2 N·m.
Maintenance and Repair
The user must not maintain or repair equipment incorporating any
D4A-N model. Contact the manufacturer of the equipment for any
maintenance or repairs required.
Tightening Torque
A loose screw may cause malfunctions. Be sure to tighten each
screw to the proper tightening torque as shown in the table.
Note:
When using M5 Allen-head bolts, particularly when the head di-
rection has been changed, check the torque of each screw and
make sure that the screws are free of foreign substances, and
that each screw is tightened to the proper torque.
Model
1/2-14NPT Conduit
D4A-1
@@@
N
D4A-2
@@@
N
Front Mounting
Rear Mounting
(Rear View)
59.5
±
0.15
29.4
±
0.15
0
Two, 5.2
+0.2
dia. holes
or M5 tapped holes
59.5
±
0.15
29.4
±
0.15
0
Two, 6.2
+0.2
dia. holes
(Recommended mount-
ing screws: M6.
Switch Box depth: 10.)
No.
Type
Appropriate tightening
torque
1
Terminal screws (M3.5 screws)
(including grounding terminals)
0.78 to 0.88 N·m
2
Head mounting screws
1.18 to 1.37 N·m
3
Switch and box mounting
screws
2.35 to 2.75 N·m
4
Body mounting screws
(See note.)
4.90 to 5.88 N·m
5
Connectors
1.77 to 2.16 N·m
6
Actuator mounting screws
2.45 to 2.65 N·m
In the interest of product improvement, specifications are subject to change without notice.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
Cat. No. C092-E1-03
