Emergency Stop Devices
Cable (Rope) Pull Switches
Lifeline 3
Specifications
Standards
Approvals
Safety Contact
Designation/Utilization Cat.
A600/AC-15 (Ue)
(Ie)
N600/DC-13 (Ue)
(Ie)
Thermal Current (lth)
Minimum Current
Safety Contact Gap
Rtd. Impulse Withstand
Voltage
Pollution Degree
Max. Actuation Frequency
Case Material
Eye Nut Material
Indicator Material
Protection
Conduit Entry
Operating Temperature
Operation Force
Tensioning Force to Run
Position
Tensioning Force to Lockout
Max. Cable Span Between
Switches
Fixing (mounting holes)
Mounting
Mechanical Life
Weight
Colour
EN 418, ISO 13850, ISOTR 12100, IEC
60947-5-1, IEC 60947-5-5
CE marked for all applicable directives,
cULus and TUV
2 N.C. or 3 N.C. or 4 N.C. direct
opening action
600V 500V 240V 120V
1.2A 1.4A 3A 6A
600V 500V 250V 125V
0.4A 0.55A 1.1A 2.2A
10 A
5 V 5 mA
>2 x 2mm (0.078in)
(Uimp) 2500 V
3
1 cycle/s
Heavy-duty die-cast aluminium alloy
(LM24)
Stainless steel
Glass filled nylon
IP67
1 x 1/2in NPT, 1 x M20, quick-
disconnect style
-25°C to +80°C (-13°F to +176°F)
<125N (28.1lb) (300mm deflection)
103N (23.17lb) typical
188N (42.3lb) typical
30m (98.42ft)
4 x M5
Any position
1,000,000
610g (1.34lb)
Yellow body, blue reset button
Description
The Lifeline 3 is a cable (rope) operated emergency stop device
designed to meet the stringent requirements of EN 418 (Safety of
Machinery—Emergency Stop Equipment). The Lifeline 3 system
can be installed along or around awkward machinery such as
conveyors and provides a constant-access emergency-stop facility.
The Lifeline 3 is the only device of its kind to incorporate the
following features in one unit making it the most versatile cable
switch on the market.
1. The positive-mode mechanism ensures that the contacts are
immediately latched open on actuation and can only be reset by
the intentional action of turning the blue reset knob. The design
also protects against nuisance tripping and the effects of thermal
expansion.
2. The cable-status indicator makes the system easy to set up and
maintain for spans up to 30m (98ft).
3. Four sets of contacts are provided: 2 N.C. + 2 N.O., 3 N.C. +
1 N.O., or 4 N.C. contacts.
4. Sealed to IP67 with rugged construction using die-cast alloy and
stainless steel to withstand harsh conditions.
Features
•
•
•
•
•
•
Switches up to 30m (98ft) span
Universal mounting and operation
Switch lockout on cable pulled and cable slack
Cable-status indicator on switch lid
Industry standard fixing centres to DIN/EN 50041
Quick disconnect styles available.
Important:
It is recommended that the LRTS (Lifeline
Rope Tensioning System) should be used
with the Lifeline 3 cable rope switch.
Typical Applications
6-4
Emergency Stop Devices
Cable (Rope) Pull Switches
Lifeline 3
Application Details—mm (inches)
Lifeline 3
Cable Grips
1
Tension
125
(5)
Indicator
2-3m
(6-9ft)
2
≤30m
(98ft)
Tensioner
2
P. Bolts
1
3
Polypropylene-covered
steel cable
2
F
d
2-3m
(6-9ft)
125
(5)
Reset Knob
4
Lifeline 3
1
Tension
125
(5)
Indicator
2-3m
(6-9ft)
2
F
d
2-3m
(6-9ft)
125
(5)
2
1
Tensioner
Spring
5
6
Wall
2
≤10m
(32ft)
Notes:
1. The first and last
P. Bolt
must be located as close as possible to the switch eyelet while maintaining adequate clearance (125mm/5in) from the
cable grips to allow free movement. This ensures a straight and efficient pulling action on the switches.
2. Additional
P. Bolt
s, spaced 2-3m (6-9ft) apart, help keep the perpendicular pull force, F, and distance, d, within IEC60947-5-5 specifications
of 200N (45lbs) and 400mm (15.75in).
3. We recommend using a switch at both cable ends, especially in applications with long cable runs or cable runs going around bends. This
helps ensure that the safety function is fulfilled upon actuation of the cable in any direction.
4. ISO13850 (EN418) requires that the full length of cable to be within view when the reset is turned to the run position or the machine must
be inspected over the whole length of the cable, both before and after resetting.
5. On shorter cable runs (max 10m), a Lifeline tensioner spring may be used at one end of the span. The installation must be such that the
above requirements can be met. When a spring is used, the last
P. Bolt
must be located as close as possible to the spring while maintaining
adequate clearance (125mm/5in) from the cable grips to allow free movement. This is intended to help to ensure that a pull near the end of
the cable will be between
P. Bolt
s. This should result in operation of the switch contacts instead of only the spring moving.
6. Careful attention is required for the design of the installation to ensure that the cable is not likely to become trapped or snagged. This is
especially important when using a tensioner spring because a cable snag between the location of the pull and the switch could prevent the
actuation of the safety function.
7. It is essential that when the installation is complete, a thorough functional test is made. This should include checking all types and directions
of pull over the length of the cable as well as checking for slack-cable tripping.
6-6
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