The Pullswitch is a failsafe taut wire emergency pull cord safety stop switch for open conveyors.
PVC coated steel pull wires and pigtails connect between the switches
to provide easy installation and continuous emergency stop access along
the length of the entire conveyor. Pullswitches can be installed at 60m
intervals, reducing overall system cost. Quick location of a tripped
switch is provided by a standard reflector or optional flag marker, and
the tripped signal can be wired back to an indicator panel or PLC.
The Pullswitch is a taut wire device, so if wire tension is lost the
unit will trip. This design provides a secondary level of safety
protection if the pull wire is damaged, or becomes slack.
The Pullswitch’s IP65 / NEMA 4, 4X, 9 rated enclosure is made from
polycarbonate and stainless steel, making the housing corrosion
resistant and weatherproof. A total of six positive break contacts
inside the Pullswitch offer unique operation and control. Two
independent cam operated switches with snap action mechanical operation
are provided for conveyor shutdown, and four additional micro-switches
signal for a slack wire alarm.
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