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SR E4 | Safety relay cat. 4 for monitoring emergency stop buttons and safety switches

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SR E4
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  • Product description and specifications
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Product description

Safety is essential in any industrial environment, and the right safety components are crucial to ensure a safe working environment. ReeR safety relays are at the heart of many safety systems and are specifically designed to meet the highest standards.

Safety Relays

Safety relays are indispensable for monitoring and controlling safety functions in machines and installations. In combination with light curtains, photocells, safety switches, and emergency stop buttons, they ensure that systems respond immediately to dangerous situations, thereby preventing accidents.

Muting Relays

Muting relays are useful in situations where automatic processes need to be temporarily bypassed, for example in conveyor systems, without compromising safety. They temporarily disable the safety functions and automatically restore them once the process is complete.

Speed Monitoring Relays

Speed monitoring relays provide continuous protection by monitoring the rotational speed of machines. They are indispensable in applications where too high, or too low, speeds can be dangerous and trigger an alarm or even an immediate shutdown of the machine in case of deviations.

Safety Category

To find the right relay for the right safety application, there are different categories. These categories range from basic protection (cat. 1) to the highest safety level (cat. 4). As the category increases, so does reliability and fault detection, with additional checks and redundancy in the higher categories. This allows each category to be tailored to the specific risks of the industrial environment to meet all safety requirements.


Key Features of ReeR Safety Relays:
  • Monitor and control safety functions in a machine
  • Provides alarm and/or complete shutdown
  • Available in different safety categories
  • Suitable for monitoring of light curtains, photocells, safety switches, etc.
  • Available in different versions
  • Option for bypassing the safety function (muting relays)
  • Also available for controlling and monitoring rotational speed (speed monitoring relays)

Documents

Specifications

Power supply24 VDC
Connecting typeRemovable
Screw terminals
SeriesSR
Width22,5 mm
TypeEmergency-stop push-button
Door switches
Safety

In machine safety, Performance Level (PL) and Category (Cat) are often used to assess the safety of a machine. PL describes the safety performance of a safety system based on the likelihood of dangerous errors. Cat describes the safety measures based on the risk analysis of the machine.

SafetyType 4
Cat 4
Pl e
Number of NO2 NO
BrandReer
CategorySafety relays
Product codeRR403890
Supplier code1330803
Unitst

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