D4N

17

Safety Precautions

Be sure to read the precautions for All Safety Limit Switches in the website at:http://www.ia.omron.com/.

Indication and Meaning for Safe Use

!CAUTION

• Do not use the Switch submerged in oil or water, or in locations

continuously subject to splashes of oil or water. Doing so may

result in oil or water entering the Switch interior. (The IP67 degree

of protection specification for the Switch refers to water penetration

while the Switch is submersed in water for a specified period of

time.)

• Always attach the cover after completing wiring and before using

the Switch. Also, do not turn ON the Switch with the cover open.

Doing so may result in electric shock.

• Do not switch circuits for two or more standard loads (250 VAC,

3 A). Doing so may adversely affect insulation performance.

The Switch contacts can be used with either standard loads or

microloads. Once the contacts have been used to switch a load,

however, they cannot be used to switch smaller loads. The contact

surfaces will become rough once they have been used and contact

reliability for smaller loads may be reduced.

Mounting Method

Appropriate Tightening Torque

Tighten each of the screws to the specified torque. Loose screws may

result in malfunction of the Switch within a short time.

Switch Mounting

• Mount the Switch using M4 screws and spring washers and tighten

the screws to the specified torque.

• For safety, use screws that cannot be easily removed, or use an

equivalent measure to ensure that the Switch is secure.

• As shown below, two studs with a maximum height of 4.8 mm and

a diameter of 4

mm can be provided, the studs inserted into the

holes on the bottom of the Switch, and the Switch secured at four

locations to increase the mounting strength.

Switch Mounting Holes

• Make sure that the dog contacts the actuator at a right angle.

Applying a load to the switch actuator (roller) on a slant may result

in deformation or damage of the actuator or rotary shaft.

Indicates a potentially hazardous situation

which, if not avoided, may result in minor

or moderate injury or in property damage.

Precautions

for Safe Use

Supplementary comments on what to do

or avoid doing, to use the product safely.

Precautions

for Correct

Use

Supplementary comments on what to do

or avoid doing, to prevent failure to

operate, or undesirable effect on product

performance.

Electric shock may occasionally occur.

Do not use metal connectors or metal conduits.

Precautions for Safe Use

Precautions for Correct Use

1

Terminal screw

0.6 to 0.8 N·m

2

Cover mounting screw

0.5 to 0.7 N·m

3

Head mounting screw

0.5 to 0.6 N·m

4

Lever mounting screw

1.6 to 1.8 N·m

5

Body mounting screw

0.5 to 0.7 N·m

6

Connector, M12 adaptor 1.8 to 2.2 N·m

7

Cap screw

1.3 to 1.7 N·m

CAUTION

One-conduit Type

Two-conduit Type

7

6

3

4

5

1

2

−0.05

−0.15

2.5±0.1

22±0.1

47±0.1

20±0.1

22±0.1

Two, M4

−0.15

4

−0.05 dia.

Height: 4.8 max.

42±0.1

39±0.1

20±0.1

22±0.1

40±0.1

42±0.1

2.5±0.1

5.35±0.1

Two, M4

−0.15

4

−0.05 dia.

Height: 4.8 max.

Dog

Dog

Correct

Incorrect