Speedy installation for IDC terminal limit switch
A
Honeywell Sensing and Control product story
Edited by the Engineeringtalk editorial team
Apr 6, 2004
An innovative, patented limit switch designed for fast, easy wiring aims to meet the needs of cost-conscious OEMs in a variety of industry applications.
An innovative, patented limit switch designed for fast, easy wiring aims to meet the needs of cost-conscious OEMs in a variety of industry applications including elevators and escalators, automated equipment, scissor/platform lifts, material handling, overhead doors and packaging machinery.
The EVN2000 Series has a fully enclosed housing, no removable external parts, and uses insulation displacement terminals (IDT) to reduce installation time by up to 50%.
The new termination design eliminates the need for access inside the housing, thereby making a housing cover, cover screws and gaskets unnecessary.
The method of connecting the cable automatically provides cable sealing and strain relief, eliminating the need to purchase and store separate cord grips.
The EVN Series limit switch offers snap-action 1NO/1NC direct opening operation, with a 4mm airgap and a choice of four actuator types.
EVN 2000 switches are certified by CE, and are listed by C-UL and UL.
The housing is EN50047 mounting compatible to meet globally accepted mounting standards.
Traditional limit switch installation involves opening the switch by removing part of the enclosure, stripping the ends of the cable, clamping the conductors using terminal screws and finally, using a separate cord grip to seal the cable.
Insulation displacement terminals eliminate the need to strip the insulation off the individual lead wires, and require only the outer cable jacket to be removed.
The individual lead wires are then placed into a plastic insert, which separates and aligns them to the internal switch.
The simple action of pushing the insert into the housing and tightening the cord grip, not only ensures electrical connection, but also seals and provides strain relief for the cable.
Controlled tests performed by Honeywell indicate a 50% reduction in the time needed to wire a switch.
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