Multifunctional Safety Relays with Time Functionality
The multifunctional PSR-ESD-30 safety relay from Phoenix Contact offers two instantaneous and two delayed release contacts in a package with a total width of just 22.5 mm. These are suitable for monitoring emergency stop and safety door circuits as well as for light barrier monitoring applications. Other than setting the delay time to a value between 0.1 and 30 seconds, no further adjustments are necessary. These relays are practical in safety applications in machine and plant engineering where processes first have to be halted before an employee is permitted to enter the hazardous area. For example, a motor is first braked until it comes to a complete standstill. Once the braking time expires, the drive is safely shut down and the safety door is unlocked so that the machine can be accessed.
The integrated controller logic prevents the configured time from being manipulated during operation. Furthermore, the safety relay complies with all of the relevant safety standards such as EN 954-1, ISO 13849-1 and IEC 61508. Thus, it can be used in nearly all applications where reliable time functionality is required.
Phoenix Contact is one of the world leaders in developing and manufacturing connectivity solutions and automation components. Its principal product ranges include: printed circuit board connectors; modular terminal blocks; fieldbus components; surge voltage protection systems; industrial plug and socket connectors and interface units. In all of these areas, Phoenix Contact can offer technical expertise and cost effective solutions.
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