G-210

Safety Sensors / Components

Structure, Names, and Functions

Structure (D4NH-

@@BC)

Contact Form

Note: 1. Terminals are numbered according to EN50013. Contact forms are according to EN60947-5-1.

2. MBB (Make Before Break) contacts have an overlapping structure, so that before the normally closed contact (NC) opens, the normally

open contact (NO) closes.

Model

Contact

Contact form

Operating pattern

Remarks

D4NH-

@A@

1NC/1NO

D4NH-

@B@

2NC

D4NH-

@C@

2NC/1NO

D4NH-

@D@

3NC

D4NH-

@E@

1NC/1NO MBB

D4NH-

@F@

2NC/1NO MBB

Pg13.5

G1/2

1/2-14NPT

M20

M12 Connector

Note: M12 connector types are not available for

Switches with three contacts.

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

---

Arm Lever

Conduit

Size

1-conduit

2-conduit

Built-in Switch

Cover

Guard Closed

Guard Open

Head

The head can be mounted in four directions.

Forced

separation

of NC con-

tacts

When

opening

the guard

When the guard is opened, the cam that is directly coupled to

the shaft rotates to press the Switch in the direction shown by

the (vertical) arrow. This action separates the contacts to stop

the machine.

The built-in switch has a direct opening mechanism

that forcibly separates the NC contact even when

there is contact deposit.

The cover, with a hinge on its lower part, can be

opened by removing the screw of the cover, which

ensures ease of maintenance and wiring.

* The housing and head of the D4NH are made of resin. Use D4BS Miniature

Electromagnetic Lock Safety Door Limit Switches for applications requiring

safety door switches of tough, high-sealing, or oil-resistant construction.

A wide variety of conduits is available.

The arm lever is mounted upwards in the center

position before shipping. To change the position,

loosen the arm lever mounting screw, dismount

the arm lever, and mount the arm lever in the left

or right position.

Cam

The joint between the shaft and

arm lever is formed with form-

lock construction which remains

secure even when the

screw becomes loose.

▲

11

33

12

34

Zb

ON

Stroke

11-12

33-34

Only NC contacts 11-12 have an

approved direct opening

mechanism.

The terminals 11-12 and 33-34

can be used as unlike poles.

11

31

12

32

Zb

ON

Stroke

11-12

31-32

Only NC contacts 11-12 and

31-32 have an approved

direct opening mechanism.

The terminals 11-12 and 31-32

can be used as unlike poles.

33

34

11

21

12

22

Zb

ON

Stroke

21-22

33-34

11-12

Only NC contacts 11-12 and

21-22 have an approved

direct opening mechanism.

The terminals 11-12, 21-22, and

33-34 can be used as unlike

poles.

11

21

12

22

31

32

Zb

ON

Stroke

11-12

21-22

31-32

Only NC contacts 11-12, 21-22,

and 31-32 have an approved di-

rect opening mechanism.

The terminals 11-12, 21-22, and

31-32 can be used as unlike

poles.

11

33

12

34

Zb

ON

Stroke

11-12

33-34

Only NC contacts 11-12 have an

approved direct opening

mechanism.

The terminals 11-12 and 33-34

can be used as unlike poles.

33

34

11

21

12

22

Zb

ON

Stroke

11-12

21-22

33-34

Only NC contacts 11-12 and

21-22 have an approved direct

opening mechanism.

The terminals 11-12, 21-22 and

33-34 can be used as unlike poles.