MICRO SWITCH Cable-Pull Safety Switches
CPS Series
004785
Datasheet
Issue 4
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
• Choice of three actuator configurations (2CPS)
• Removable contact block version available (2CPS)
• J-hook turnbuckle included (2CPS)
• Large wiring cavity with straight-through wiring
• Models avaliable without broken cable, slack-cable detection
• 24 Vdc or 120 Vac bright, multi-cluster high-intensity LED
status indicator light available on 2CPS. Single LED on 1CPS
• Gold-plated contacts are standard on 2CPS, available on
1CPS
• Electrostatic, epoxy-coated, die-cast zinc housing
• Optional hardware packets available
DESCRIPTION
Honeywell’s MICRO SWITCH CPS Series Cable-Pull Safety
Switches provide a readily accessible emergency stop signal, a
cost-effective means compared to using multiple emergency
stop push-buttons. The CPS Series Cable Pull Safety Switch’s
internal mechanism latches on both slackened cable (push)
and pulled cable.
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.
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 the RUN
position. When the actuating cable is pulled, slackened, or
broken, a cam positively opens the NC (Normally Closed)
switch contacts. The snap-action 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.
When the direct opening switch contacts open, the auxiliary
contacts also actuate (open contacts close). The auxiliary
contacts are electrically isolated from the direct-opening
switch contacts. These NO (Normally Open) contacts may be
used for monitoring or signaling.
POTENTIAL INDUSTRIAL APPLICATIONS
• Long conveyor systems found in warehouses and
distribution centers
• Conveyor systems with 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
• Perimeter guarding in hose-down conditions
• Packaging equipment
• Assembly lines
VALUE TO CUSTOMERS
• Cost-effective means of providing an emergency stop signal
compared to multiple emergency stop push buttons
• Capability enhances productivity by minimizing nuisance
stops due to variations in temperature, stretch of cable over
time, or other application variables
• Direct opening of normally closed contacts when cable is
actuated
PORTFOLIO
The CPS Series is the largest switch in Honeywell’s MICRO
SWITCH line of safety switches. For more details on the
extensive line of Honeywell safety switches,
click here.
DIFFERENTIATION
• Internal mechanism latches on both slackened cable (push)
and pulled cable
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MICRO SWITCH Cable-Pull Safety Switches, CPS Series
Table 1. Specifications
Characteristic
Description
Switching options
Sealing
Contacts
Conduit/Connectors
Force to maintain actuation shaft
Actuation shaft operating force
Operating temperature
Storage temperature
Mechanical endurance
Rated thermal current (I
th
)
Rated impulse withstand (U
imp
)
Rated insulation voltage (U
i
)
Useable gold-plated current
Pollution degree
Conditional short circuit current
Short circuit protective device
(type/maximum rating)
Shock
Vibration
Approvals
Parameter
cable-pull safety switches
1NO/1NC direct acting
2NO/2NC direct acting
1NO/3NC direct acting
4NC direct acting
IP67, NEMA 1, 4, 12, 13
silver, gold plated over silver
1/2 NPT, PG 13.5, 20 mm, PF 1/2; Brad Harrison 10-pin conductor
1CPS & 2CPS: 25 lb*
1CPS & 2CPS: 40 lb*
-40 °C to 80 °C [-40 °F to 176 °F]
1CPS: -40 °C to 85 °C [-40 °F to 185 °F]
1 million operations
10 A
2500 V
300 V
1 mA to 50 mA, 60 Vdc max./125 Vdc max.
3
1000 A
Class J fuse (10 A/600 V)
15 g per IEC 68-2-27
10 Hz to 500 Hz, 5 g per IEC 68-2-6
UL, CSA, CE, SIL
• UL Listed per File E37138 against UL508
• CSA Certified per File 57323 against CSA C22.2 No. 14
• CE mark: The CPS complies with Low Voltage Directive 2006/95/EC; Machinery Directive
2006/42/EC only as the directives relate to the components being used in a safety function; EN
60947-1; EN 60947-5-1; EN 60947-5-5
• SIL: MCTF (Mechanical Life): >1,000,000 cycles with single-sided confidence limit of 100 %.
MCTF (Electrical Life): >25,000 cycles with single-sided confidence limit of 87.5 %.
Highest SIL Capability: SIL3 (HFT:1), IEC 61508-2: 2010. Proof Test Interval: 1 Year
Standards
* Incline measures, and not typical for manual trip
Table 2. Electrical Ratings
ac
A300
Ue
Volts
–
120
240
Ith = 10 A
AC15
Ie
Amps
–
6
3
Q300
Ue
Volts
24
125
250
dc
DC13
Ie
Amps
2.8
0.55
0.27
2
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MICRO SWITCH Cable-Pull Safety Switches, CPS Series
Figure 1. 1CPS Product Nomenclature and Order Guide
1CPS
Switch Type
A
Conduit
1
Basic Switch
Code
A
Indicator-Pilot
Light Code
1NO/1NC direct acting, gold contacts
Switch 1: 1NO/1NC
Switch 2: None
2NO/2NC direct acting, gold contacts
Switch 1: 1NO/1NC
Switch 2: 1NO/1NC
1NO/3NC direct acting, gold contacts
Switch 1: 1NO/1NC
Switch 2: 2NC
4NC direct acting, gold contacts
Switch 1: 2NC
Switch 2: 2NC
-N
Without
Broken
Cable
Detection
1CPS
Series
Single-Head
Cable-Pull
Safety Switch
A
B
C
D
1/2 NPT
PG 13.5
20 mm
PF 1/2
1
2
3
4
1NO/1NC direct acting
Switch 1: 1NO/1NC
Switch 2: None
2NO/2NC direct acting
Switch 1: 1NO/1NC
Switch 2: 1NO/1NC
1NO/3NC direct acting
Switch 1: 1NO/1NC
Switch 2: 2NC
4NC direct acting
Switch 1: 2NC
Switch 2: 2NC
5
6
7
8
A
B
24 Vdc LED
120 Vac LED
NOTE: Not all combinations of model code are available.
Please contact your Honeywell provider/representative for assistance.
Figure 2. 2CPS Product Nomenclature and Order Guide
2CPS
Switch Type
A
Conduit
1
Contact
Mounting Code
A
Basic Switch
Code
1
Actuation
Code
A
Indicator-Pilot
Light Code
2CPS
Series
Dual-Head
Cable-Pull
Safety Switch
A
B
C
D
1/2 NPT
PG 13.5
20 mm
PF 1/2
1
2
Standard: contact
block mounted
to housing
Removeable:
contact blocks
with receptacles
A
B
D
2NO/2NC, direct acting
Switch 1: 1NO/1NC
Switch 2: 1NO/1NC
1NO/3NC, direct acting
Switch 1: 1NO/1NC
Switch 2: 2NC
4NC, direct acting
Switch 1: 2NC
Switch 2: 2NC
1
2
3
4
5
6
1
1
Maintained,
both sides
Maintained, left side
No actuation, right side
Maintained, right side
No actuation, left side
Maintained, both sides
w/o broken cable detection
Maintained, left side
No actuation, right side
w/o broken cable detection
Maintained, right side
No actuation, left side
w/o broken cable detection
A
B
24 Vdc LED
cluster
120 Vac LED
cluster
NOTE: Not all combinations of model code are available.
Please contact your Honeywell provider/representative for assistance.
Not valid on 4NC switches
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MICRO SWITCH Cable-Pull Safety Switches, CPS Series
TEMPERATURE-SPAN DISTANCE APPLICATION
INFORMATION
Cable-pull switches featuring broken cable detection require
pre-tensioning in order to enable the RUN condition.
The relative expansion or contraction of the steel actuating
cable when the ambient temperature increases or decreases
must be taken into account when pre-tensioning a cable pull
switch.
The change in cable length with change in temperature can
cause significant nuisance shut downs on longer runs.
Install the system when the temperature is at the mid point of
the extremes. If a warehouse has a low temperature of 15.6 °C
[60 °F]and a high of 32.2 °C [90 °F], set up the system at the
midpoint 23.9 °C [75 °F].
Use an endspring or another CPS at the opposite end of the
cable span to double the temperature tolerance and to meet
the requirements of EN 418.
Figure 3. Total Temperature Variation vs. Cable Span
Distance
1NO/3NC
Table 3. Circuitry Charts
Circuitry
1NO/1NC
Chart
2NO/2NC
4NC
Table 4. 1CPS Contact Blocks
1NO/1NC
2NO/2NC
= grounding screw
4
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4NC
1NO/3NC
MICRO SWITCH Cable-Pull Safety Switches, CPS Series
Table 5. 2CPS Contact Blocks
Contact Block Mounted to Housing
Removable Contact Blocks with
Heavy-Duty Wiring Receptacles
A = grounding screw
A = grounding screw
2NO/2NC
2NO/2NC
1NO/3NC
1NO/3NC
4NC
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