RLN42 NAMUR isolating amplifier | Endress Hauser

Specs at a glance

Input: NAMUR
blocking: < 1,2 mA conducting: > 2,1 mA
Output: relay contact
Power Supply: 20…250 V AC/DC

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Field of application

Endress Hauser’s

The NAMUR isolating amplifier is designed for safe operation of proximity switches according to EN 60947-5-6 (NAMUR) as well as open and mechanical contacts with resistive coupling elements. It has a universal power supply (24 to 230 V AC/DC) and one relay output (changeover) per channel. The device is approved for intrinsically safe (Ex i) circuits up to zone 0 (gas) and zone 20 (dust) in the Ex area. RLN42 can be used in safety equipment up to SIL 2 in accordance with IEC 61508.

• Isolating amplifier for binary switch signals
• Wide-range power supply (24 to 230 V AC/DC)
• Input for proximity sensors acc. to NAMUR (EN 60947-5-6); floating contacts or contacts with resistance circuit
• Monitoring of input circuits for line faults such as line break and short-circuit (LFD), disengageable
• Output-side relay contacts as signal output, direction of action can be selected via DIP switches
• Ambient temperatures -40 to 60 °C (-40 to 140 °F)
• Installation in hazardous areas zone 2 / div 2