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PL20
Safety Pull Switches
The Safety Pull Switch is mounted on or alongside the
conveyor stringer, with one end of the pull wire fastened
to a fixed post and the other end fixed on to the actuator
arm. The pull wire is supported by standoff eyebolts
every 3m. The distance between the switch and fixed
post should not exceed 24m. The spacing between two
switches should be no more than 48m.
When the actuator arm displaces (rotates) to the alarm
position by force acting on the pull-wire, the microswitch
is activated and interlocked until reset manually. The
standard switch is protected to IP65, suitable for both
indoor and outdoor installation. Where the optional
nickel plated housing is specified, it can be used in
acid, alkaline or salty environments. The nickel plated
surface is well suited for highly corrosive application. |
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| Features |
- Universal design with bidirectional trigger arm.
- Rugged cast aluminum casing
- Compact Dimensions
- Integral cover for easy access to wiring terminals and
adjustment settings.
- High visibility color scheme, easy to distinguish between
alarm and normal status
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| Applications |
Options |
- Conventional belt conveyor
- Reciprocating conveyor
- Apron feeders & conveyors
- Bucket elevators
- Packaging Line
- Stockpile/reclaim systems cranes, shovels and drag-lines
- Ship loading/unloading systems
- Horizontal feed systems
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- Mounting bracket, used for large capacity conveyor
- Internal proximity switch in place of microswitch
- Nickel plated or stainless steel actuating arm for special
applications
- Address encoder shovels and Auxiliary flag
- Drop alarm
- Visible alarm
- A full selection of mounting accessories, including cable,
cable clamp, retainer, bulb.
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| Technical
Specifications |
- Switch Contact Ratings: SPDT，10A/500V
- Normal Angle for Actions: 20°
- Enclosure Protection Class: IP65
- Outline Dimensions: 190(L)mmX178(W)mmX167(H)mm
- Force: 5~7kg
- Max. Spacing Between Switches: 48m (horizontal), 36m
(inclined). Supporting eye bolt. located every 3m
- Weight: 3.8kg
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