Omron D4N Series - User Manual

Safety Limit Switch
D4N
Upgraded Safety Limit Switches Based
on the Popular D4D, Providing a Full
Lineup Conforming to International
Standards
■ Lineup includes three contact models with 2NC/1NO and 3NC
contact forms in addition to the previous contact forms 1NC/
1NO, and 2NC. Models with MBB contacts are also available.
■ M12-connector models are available, saving on labor and
simplifying replacement.
■
Standardized gold-clad contacts provide high contact reliability.
Can be used with both standard loads and microloads.
■ Conforms to EN115, EN81-1, and EN81-2 (slow-action models
only).
■ Lineup includes both slow-action and snap-action models with
Zb contacts.
■ Certified standards: UL, EN (TÜV), and CCC
Model Number Structure
Model Number Legend
1. Conduit size
1: Pg13.5 (1-conduit)
2: G1/2 (1-conduit)
3: 1/2-14NPT (1-conduit)
4: M20 (1-conduit)
5: Pg13.5 (2-conduit)
6: G1/2 (2-conduit)
7: 1/2-14NPT (2-conduit)
8: M20 (2-conduit)
9: M12 connector (1-conduit)
2. Built-in Switch
1: 1NC/1NO (snap-action)
2: 2NC (snap-action)
A: 1NC/1NO (slow-action)
B: 2NC (slow-action)
C: 2NC/1NO (slow-action)
D: 3NC (slow-action)
E: 1NC/1NO (MBB contact) (slow-action)
F: 2NC/1NO (MBB contact) (slow-action)
3. Head and Actuator
20: Roller lever (resin lever, resin roller)
22: Roller lever (metal lever, resin roller)
25: Roller lever (metal lever, metal roller)
26: Roller lever (metal lever, bearing roller)
2G: Adjustable roller lever, form lock (metal lever, resin roller)
2H: Adjustable roller lever, form lock (metal lever, rubber roller)
31: Top Plunger
32: Top Roller Plunger
62: One-way roller arm lever (horizontal)
72: One-way roller arm lever (vertical)
80: Cat whisker
87: Plastic rod
RE:Fork lever lock (right operation)
LE: Fork lever lock (left operation)
Note: Contact your sales representative for details on models
with safety standard certification.
Be sure to read the “Safety Precautions” on page 18
and the “Precautions for All Safety Limit Switches” .
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Omron D4N Series Specifications

General

Voltage Rating	250 VAC, 30 VDC
Ingress Protection	IP67
Actuator Type	Plunger
Current Rating	10 A
Housing Material	Plastic
Category	Switch
Connection Method	Screw terminals
Operating Speed	0.05 mm/s to 0.5 m/s
Standards	UL 508
Mechanical Life	15, 000, 000 operations minimum
Electrical Life	500, 000 operations
Contact Configuration	1NC/1NO, 2NC

Summary

Model Number Structure

Model Number Legend

Explains the coding system for product part numbers.

Specifications

Standards and EC Directives

Lists relevant safety and compliance directives.

Certified Standard Ratings

Details electrical performance ratings under various standards.

Structure and Nomenclature

Built-in Switch

Describes the direct opening mechanism of the internal switch.

Conduit Opening

Details available conduit sizes and mounting options.

Precautions for All Switches

Precautions for Safe Use

Crucial safety guidelines for preventing hazards and ensuring safe operation.

Operating Environment

Conditions and locations suitable or unsuitable for switch operation.

Typical Problems, Probable Causes, and Remedies

Troubleshooting common issues and their solutions.

Wiring

Contact Arrangement

Illustrates the internal wiring configurations for different contact types.

Connector Type

Details available connector options and their pin assignments.

Warranty and Limitations of Liability

SUITABILITY FOR USE

Guidance on product application and conformity to standards.

Disclaimers

Important notes on product specifications, errors, and performance data.