Application Note
Compact Limit Switches for
Industrial and Transportation Applications
Description
Honeywell’s MICRO SWITCH™ Compact Limit Switches, NGC Series, are a configurable platform of medium-duty switches that allow
the customer to choose SPDT (single pole, double throw) or DPDT (double pole, double throw) circuitry while maintaining the same
housing and mounting footprint throughout the NGC Series. MICRO SWITCH™ NGC Series can be configured more than 380,000
ways, carries global approvals, and are sealed to IP67 for potential use in indoor and outdoor applications.
Solutions
Industrial Applications
Elevators & escalators
Detects position of the moving equipment. The NGC Series Compact Limit Switch may be used to monitor moving components to
ensure that they remain in their designed envelope of movement. If the limit switch monitoring the movement detects the machinery, it
can be used to shut the machine down.
As a control mechanism, the NGC Series Compact Limit Switch may be used to indicate end of travel or other movement profile
conditions (e.g., the elevator is moving from floor one to floor two). As the elevator passes the limit switch, the elevator engages the
limit switch. The moving equipment then sends a signal to the system controller informing it that the elevator is moving. This signal can
be used to further control other operations, or simply provide an indication that the elevator is working as intended.
Machine tools and Packaging Equipment
May be used for position detection. The NGC Series Compact Limit Switch may be integrated where other sealed limit switches
typically cannot. The environment in which machine tools and packaging equipment operate is often dirty and extreme. Components
used in machine tools typically must contend with cutting oils, fluids and metal debris. Components used around packaging
equipment must typically content with debris and dust from cardboard cutting operations in which switches must operate. The NGC
Series provide a sealed switching package with single pole and double throw contact options.
Transportation Applications
Scissor lifts and mobile light towers
May be used for position detection. The NGC Series Compact Limit Switch’s small size allows it to be integrated where other sealed
limit switches cannot. By design, scissor lifts and mobile light towers lift or extend arms and platforms to positions high into the
air. Scissor lifts are complex mechanisms which require significant control to function properly. Limit switches like the NGC Series
Compact Limit Switch may be used at multiple points on scissor lifts without consuming critical space that is required for the
mechanism to function properly. Mobile light towers function similarly; however, they are often used in harsh environments such as in
cold temperatures and in rain and storms. The NGC Series Compact Limit Switch is designed for use in these demanding types of
applications because it is sealed to the environment.
Rail doors
May be used for position detection. The NGC Series Compact Limit Switch’s small size allows it to be integrated where other sealed
limit switches cannot. Rail doors often function as a pocket-type door and perform a sliding motion when opening and closing. They
are designed this way to maximize the space used by the rail cars. Therefore, products that are used to control the doors must be
compact and efficient. The NGC Series Compact Limit Switch is small enough to fit in tight spaces, yet is built to withstand the harsh
environments that rail applications typically present.
Sensing and Productivity Solutions
Application Note
Compact Limit Switch, NGC Series
Benefits to the Customer
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The NGC Series Compact Limit Switch’s compact size allows it to be positioned in areas where space
is at a premium.
The internal workings of the NGC Series Compact Limit Switch are sealed from the environment,
allowing for potential use in many types of environments.
The NGC Series’ configurable options allow a common switch body and interface for a variety of
sensing requirements:
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MICRO SWITCH™
Compact Limit
Switch, NGC Series
Choice of connector or cable options
Compact option for double pole double throw switching needs
Optional cable lengths and switch body exit configurations
Find Out More
To learn more about Honeywell sensors
and switches, contact a Honeywell
representative today at
1-800-537-6945,
e-mail
info.sc@honeywell.com,
or visit
sensing.honeywell.com
Warranty.
Honeywell warrants goods of its manufacture as being free of defective
materials and faulty workmanship. Honeywell’s standard product warranty applies unless
agreed to otherwise by Honeywell in writing; please refer to your order acknowledgement
or consult your local sales office for specific warranty details. If warranted goods are
returned to Honeywell during the period of coverage, Honeywell will repair or replace, at
its option, without charge those items it finds defective.
The foregoing is buyer’s sole
remedy and is in lieu of all warranties, expressed or implied, including those of
merchantability and fitness for a particular purpose. In no event shall Honeywell be
liable for consequential, special, or indirect damages.
While we provide application assistance personally, through our literature and the
Honeywell web site, it is up to the customer to determine the suitability of the product in
the application.
Specifications may change without notice. The information we supply is believed to be
accurate and reliable as of this printing. However, we assume no responsibility for its use.
Sensing and Productivity Solutions
Honeywell
1985 Douglas Drive North
Golden Valley, MN 55422
honeywell.com
002410-1-EN IL50 GLO
December 2015
Copyright © 2015 Honeywell International Inc. All rights reserved.
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