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 VAC/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

• Simple and fast wiring with pluggable terminals
• Suited for use in safety instrumented systems up to SIL 2 (IEC 61508)
• Compact housing width with 17.5 mm (0.69 in) for efficient use of space
• Galvanic 3-way isolation