Product category:
Safety relays, interlocks, control systems, electrical components
News Release from: Moeller Electric | Subject: LS safety position switches
Edited by the Manufacturingtalk Editorial
Team on 07 January 2008
Safety position switches enhance
protection
Safety position switches offer a simple, efficient and cost-effective way of achieving enhanced protection for personnel and processes.
LS safety position switches combine versatility with multi-coded actuators that provide a high degree of protection against tampering Offered by Moeller Electric, the switches offer a simple, efficient and cost-effective way of achieving enhanced protection for personnel and processes
This article was originally published on Manufacturingtalk on 27 May 2008 at 8.00am (UK)
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The LS range includes the following.
* Switches with separate actuators.
* Door switches with spring or magnet-powered retained actuators.
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* Switches for hasp and hinge operation.
The LS safety position switches have IP65 ingress protection to ensure reliable operation even in harsh environments.
All switches in the range have operating heads that can be rotated through 4 x 90 deg, giving a wide choice of installation options.
In addition, the switches feature double-break contacts that are configured to ensure their suitability for use in redundant safety circuits.
The contacts are interlocked and positively driven, as prescribed by IEC/EN 60947-5-1, and are suitable for use with electronic devices, such as programmable controllers, in line with the requirements of IEC/EN 61131-2.
Complying with EN 1088, type LS4-ZB and LS-ZB safety switches have separate non-retained actuators, and are ideal for use with gearbox covers, press guards and in similar applications.
With LS4-ZB switches, the actuator can be inserted from either side of the operating head, which allows horizontal or vertical mounting of the switch.
With LS-ZB switches the actuator can be inserted from all four sides of the head, and also from above.
* Protective doors and guards interlocking - for applications involving the securing and interlocking of protective doors and guards, Moeller Electric offers LS-ZBZ switches, which have retained actuators.
The magnet-powered types are interlocked when the voltage is applied and can therefore be opened in the event of a power failure.
The spring-powered types ensures that the door or guard remains safely interlocked even in the event of power failure, and in an emergency the protective guard is released using an auxiliary release mechanism.
A choice of six different actuators is offered, and the switches are provided with a secondary contact for monitoring purposes.
Type LSR/TS hinge-operated and LSR/TKG hasp-operated switches from the range are designed for use with doors and hinged flaps.
These switches immediately disconnect the power supply following any attempt to open a protected door or flap and a movement of just 5 deg results in actuation, making tampering impossible, said Moeller Electric to manufacturingtalk.com.
The operating lever of the LSR/TKG hasp-operated switches can easily be configured on site to suit the precise needs of the application.
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