CPS Series
Cable Pull Safety Switch
FEATURES
• Direct opening action
of NC
(normally closed) contacts
• 2CPS: 2NO/2NC, 1NO/3NC or 4NC
contact configurations
1CPS: 1NO/1NC, 2NO/2NC, 1NO/3NC or
4NC contact configurations
• Typical cable span of 76 m (250 ft) in an
environment with a temperature change
of ±17 °C (±30 °F). Longer spans are
possible depending upon temperature
change and installation
BG
(Applied for)
(ref. note on page 6 for more details or
Application note - Effect of Temperature
on Cable Pull Switch Operation)
• Choice of three actuator configurations
(2CPS)
• Removable contact block version
available (2CPS)
• Large wiring cavity with straight-
through wiring
CPS Series Cable Pull Safety Switches provide a readily accessible emergency stop
signal. This is a cost-effective means compared to using multiple emergency stop
push-buttons. (Cable Pull Safety Switches are not, however, to be used as a means
of personnel safeguarding. They may be used to prevent further injury or damage to
equipment when used for emergency stop signaling.)
The CPS Series Cable Pull Safety switch is designed to provide emergency stop
protection for exposed conveyor and assembly lines. The internal mechanism
latches on both slackened cable (push) and pulled cable. This capability also en-
hances productivity by eliminating nuisance stops due to variations in temperature,
stretch of cable over time, and other application variables.
• 24 Vdc or 120 Vac bright, multicluster
LED status indicator light available on
2CPS. Single high intensity LED on 1CPS
• Gold-plated contacts are standard on
2CPS, available on 1CPS
The 1CPS is intended for use in applications where the cable span is 76 m (250 ft)
or shorter. It is an economical solution for shorter runs or zone protection typical to
automated systems. The 2CPS series is intended for use in very long cable runs of
152 m (500 ft) or shorter, such as long conveyor lines found in warehouses.
• Die-cast zinc housing
• Optional hardware packs available
A line in the midpoint of the cable tension window indicates proper cable tension,
providing easy set-up. The direct opening switch contacts are held closed when the
actuating cable is under proper tension and the reset knob is set to RUN. When the
actuating cable is pulled, slackened or broken, a cam positively opens the NC (Nor-
mally Closed) switch contacts. The snap action, trip operation causes the switch
contacts to change state and mechanically latch almost simultaneously when the
cable is pulled, slackened or broken. The NC switch contacts remain open until the
CPS is reset by properly tensioning the cable and manually rotating the reset knob.
TYPICAL APPLICATIONS
• Long conveyor systems found in
warehouses and distribution centers
• Conveyor systems having a high amount
of vibration
• Conveyor systems that experience wide
temperature swings
• Long conveyor systems where easy
through wiring, or highly visible trip
status is required
• Hose down conditions
• Packaging equipment
• Assembly lines
When the direct opening switch contacts open, the auxiliary contacts also actuate
(open contacts close and closed contacts open). The auxiliary contacts are electri-
cally isolated from the direct opening switch contacts. These NO (Normally Open)
contacts may be used for monitoring or signaling.
The CPS complies with: Low Voltage Directive 73/23/EEC, as amended by directive
93/68/EEC; Machinery Directive 98/37/EEC only as the directives relate to the
components being used in a safety function; IEC/EN 60947-1; IEC/EN 60947-5-1;
IEC/EN 60947-5-5.
!
WARNING
MISUSE OF DOCUMENTATION
•
The information presented in this product sheet (or catalogue) is for reference only. DO NOT USE this document as system
installation information.
•
Complete installation, operation and maintenance information is provided in the instructions supplied with each product.
Failure to comply with these instructions could result in death or serious injury.
• Safety Products for Machine Safeguarding •
1
© Honeywell International Inc. - April 2003