ReeR – SV MR0 – SV MR0 U

ReeR – SV MR0 – SV MR0 U

PL e – SIL 3 safety speed monitoring interface

Safety speed monitoring interfaces. Safety level up to PL e – SIL 3

  • SV MR0 – Safety speed monitoring relay for Overspeed and Zero speed control
  • SV MR0 U – Safety speed monitoring relay for Underspeed control

Both modules integrate:

  • Guided-contact safety relay
  • Selectable manual orAutomatic restart
  • EDM feedback input for external contactors monitoring

Enable inputs used, for instance, when monitoring the same axis, in different working phases, with more modules configured with different thresholds

Faults are signalled by LED Fault and a PNP system status output. PNP status output indicating overspeed or underspeed thresholds crossing

SV MR0 and SV MR0 U integrates:

  • 2 inputs for PNP proximities switches
  • 3 front panel selectors allow configuration of the speed threshold
Safety relay outputs 2 N.O. – 6A 250 VAC
Overspeed or Underspeed status output PNP – 100 mA 24 VDC
Power supply (VDC) 24 ± 20%
Electrical connections Removable terminal blocks, screw contacts
Start/Restart Automatic/Manual
Maximum input Frequency (Hz) 2000
Selectable frequency threshold (Hz) 0,5 … 990
Selectable frequency threshold (rpm) 10 … 49500 equivalent to 0,17 … 825 Hz
Hysteresis 5%
External relay control Yes. EDM feedback input for external contactors monitoring
Signalling LED indicators for status and diagnostic
Protection rating IP 20 for housing – IP 2X for terminal block
Operating temperature (°C) -40 … 55
Fastening On DIN rail fastening according to EN 50022-35 standard
Dimensions h x w x d (mm) 99 x 22,5 x 114
  • 2006/42/EC: Machine Directive
  • 2014/30/EU: Electromagnetic Compatibility Directive
  • 2014/35/EU: Low Voltage Directive
  • EN ISO 13849-1:2008 (Cat.4, PL e) Safety of machinery. Safety-related parts of control systems. Part 1: General principles for design
  • EN 61508-1:2010 (SIL 3) Functional safety of electrical/electronic programmable electronic safety related systems. General requirements
  • EN 61508-2:2010 (SIL 3) Functional safety of electrical/electronic/programmableelectronic safety related systems. Requirements for electrical/electronic/programmable electronic safety-related systems
  • EN 61508-3:2010 (SIL 3) Functional safety of electrical/electronic programmable electronic safety related systems: Software requirements
  • EN 61508-4:2010 (SIL 3) Functional safety of electrical/electronic programmable electronic safety related systems. Definitions and abbreviations
  • EN 62061:2005 (SILCL 3) Safety of machinery. Functional safety of safety-related electrical, electronic and programmable electronic control systems

79 Ratio Agency