Omron CM-S221 - User Manual

CM-S2
21 safety switches are a coded magnet safety switch
for use in machine guarding applications.
Designed for use in applications where increased security is
required, the CM-S221 has a coded magnetic actuator and
cannot be fully operated with a single magnet.
The CM-S221 switches are designed to be connected to a
safety control circuit which has less than 0.5 Amps
inrush current.
The CM-S221 is manufactured in a robust ABS housing and
fully sealed to IP67 and can be used in wet or dusty
environments.
With correct installation, the CM-S221 safety switches comply
with the guidelines given in EN1088.
CE Complies with the relevant sections of the CE
marking directive.
UL 508 Industrial Control Equipment
EUROPEAN DIRECTIVES
Machinery Directive 98/37/EC
Low Voltage Directive 73/23/EC
Electromagnetic Compatibility Directive 89/336/EC
EUROPEAN STANDARDS
EN292 Safety of Machinery
Basic concepts, general principles for design.
EN 60204 Safety of Machinery
Electrical equipment of machines.
EN 954-1 Safety of Machinery
Safety related parts of controls systems
EN 1088 Interlocking devices associated with guards.
EN
60947-5-3
Safety of Machinery
Specification for low voltage switchgear and
control gear.
Interlocke
d guards where door locking is not required.
Food and Beverage packing/filling systems
Dairy
Pharmaceutical
Paper Industry
Can Forming and Filling, (Aluminum, Steel, Plastic)
Semiconductor Manufacture/Assembly.
Description
A Declaration of Conformity can be obtained from the
Omron Scientific Technologies, Inc. web Site: www.sti.com
Whe
n the safety switch and actuator are within the specified
operating range (see table on page 3 for switching
distances), the N/C contacts will be closed and the N/O
contacts will be open.
When the actuator moves out of the operating range, the N/C
contacts will open and the N/O contacts will close. Both the
N/C and N/O contacts may be used for safety.
The CM-S221 safety switch and actuator are designed to
approach each other from most angles. When the switch is
closed the targets on the printed face of the switch must be
aligned.
Operation
Applications
Approvals
Certificate of Conformity
Safety,
Technology
& Innovation
CM Series
This information is designed to help suitably qualified
personnel install and operate Omron Scientific Technologies,
Inc. safety switch equipment.
Before using this product, read this guide thoroughly along
with any relevant European and/or National Standards e.g.
Machinery Directive 89/392/EEC and it’s Amendments,
Provision and Use of Work Equipment Regulations.
Further information can be obtained from
Omron Scientific Technologies, Inc.
KEEP THIS GUIDE FOR FUTURE REFERENCE
Operating Instructions for CM-S221 Safety Switches
Listed

Omron CM-S221 Specifications

General

Category	Switch
Manufacturer	Omron
Model	CM-S221
Contact Form	SPDT
Insulation Resistance	100 MΩ min at 500 VDC
Operating Force	1.47 N max
Dielectric Strength	1000VAC for 1 minute
Operating Life	10, 000, 000 operations min
Operating Temperature	-25°C to 85°C

Summary

CM-S221 Safety Switch Operating Instructions

Product Description

CM-S221 safety switches are coded magnetic safety switches for machine guarding applications, offering increased security.

Operating Principle

Details how the N/C and N/O contacts behave when the safety switch and actuator are within or outside the operating range.

Typical Applications

Lists industries and uses for the CM-S221, such as interlocked guards and food/beverage systems.

Product Approvals and Compliance

Lists relevant approvals and compliance with European directives and standards for safety.

Certificate of Conformity Information

Informs users where to obtain a Declaration of Conformity for the product.

Mounting and Installation Guidance

Mounting Procedure

Provides instructions on how to mount the switch and actuator, emphasizing alignment and avoiding ferrous materials.

Contacts and Wiring

Details the contact arrangement and provides a color code for pre-wired connections.

External Fusing Requirement

Specifies the need for external fusing and the recommended fuse rating for the CM-S221.

Product Specifications and Dimensions

Physical Dimensions

Provides detailed dimensional drawings in millimeters and inches for the CM-S221 switch and actuator.

Technical Data

Lists key technical specifications including contact ratings, operating distances, IP rating, and temperature range.

Important Notes and Changes

Specification Changes Policy

States that specifications are subject to change without notice due to product development.

Safety Contact Clarification

Clarifies that safety contacts are described as normally closed (N/C) when the guard is closed and the machine is ready to start.