D4NS

10

Safety Precautions

Refer to the “Precautions for All Switches” and “Precautions for All Safety Door Switches”.

!CAUTION

• Do not use the Switch submersed 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. (The IP67 degree of

protection of the Switch specifies the amount of water penetration

after the Switch is submerged in water for a certain 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.

Stopper Installation

Do not use a Switch as a stopper. Be sure to install a stopper as

shown in the following illustration to ensure that the base of the

Operation Key does not strike the Head, and adjust the stopper to be

within the setting zone (0.5 to 3 mm) of the base of the Operation Key.

Do not subject the Switch to a shock that exceeds the Switch's shock

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

• Loose screws may result in malfunction. Tighten the screws to the

specified torques.

• When loosening a screw with an electrical screwdriver or similar

tool while pressing down on the screw head, do not continue

turning the screw past the point where the threads disengage.

Doing so may strip the end of the threads.

Mounting Holes

• Use M4 screws and spring washers to mount the Switch and

Operation Key, and tighten the screws to a suitable torque. To

ensure safety, use screws that cannot be easily removed or

another means to prevent the Switch and Operation Key from

easily being removed.

• 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.

• Set the Operation Key so that it is within 1 mm of the center of the

key hole. If the Operation Key is offset or at an angle, accelerated

wear or breaking may result.

• Observe the specified insertion radius for the Operation Key and

insert it in a direction perpendicular to the key hole.

Head Direction

• The rotation of the Switch head may be adjusted to any of the four

directions by loosening the head mounting screws at the four

corners of the head. Make sure that no foreign materials enter

through the head.

• Do not insert or remove the Operation Key with the Switch head

removed. Doing so may make it impossible to insert the Operation

Key.

Securing the Door

When the door is closed (with the Operation Key inserted), the

Operation Key may exceed the set zone because of, for example, the

door's own weight, machine vibration, or the door cushion rubber.

Secure the door with a stopper so that the Operation Key remains

within the set zone.

Electric shock may occasionally occur.

Do not use metal connectors or metal conduits.

Precautions for Safe Use

Precautions for Correct Use

Terminal screw

0.6 to 0.8 N·m

Cover mounting screw

0.5 to 0.7 N·m

Head mounting screw

0.5 to 0.6 N·m

Operation Key mounting screw

2.4 to 2.8 N·m

Body mounting screw

0.5 to 0.7 N·m

Connector

1.8 to 2.2 N·m

Cap screw

1.3 to 1.7 N·m

Switch

Operation key

Stopper

Correct

Incorrect

−0.05

−0.15

Switch Mounting Holes and Studs

• 1-Conduit Modules

4

-0.05

-0.15

dia.

Height: 4.8 max.

Two, M4

Two, M4

4

-0.05

-0.15

dia.

Height: 4.8 max.

• 2-Conduit Modules

Two, M4

Two, M4

Two, M4

Operation Key Mounting Holes

• Horizontal/Vertical Mounting

(D4DS-K1/-K2)

• Horizontal Adjustable

Mounting (D4DS-K3)

• Horizontal/VerticalAdjustable

Mounting (D4DS-K5)

Operation Key

Set zone

(0.5 to 3 mm)