Monitoring Relay for standard analog inputs
with programmable alarms

  • Input Standard analog process signals
  • 0/4-20mA, 0/2-10V
  • Programmable Measuring Range
  • Display in different units of measure for voltage, Current, resistance, conductivity, pressure, flow and more
  • Fault monitoring for open circuit
  • Programmable alarms
  • Integrated transmitter supply voltage 24V
  • 4 SPDT alarm relays
  • Isolated analog output
  • Clear status display
  • 24V AC or DC, 100 to 240VAC
  • PDF

The Monitoring Relay MR50 has inputs for industry standard analog signals 0/4 ... 20 mA and 0/2 ... 10 V DC. The measured value in shown in the disply in the selected units of measure.
An integrated transmitter supply provides for direct connection of loop powered sensors.
Easy programming, up to 4 alarm outputs (SPDT). Optional isolated programmable analog output 0/4 ... 20 mA; 0/2 ... 10 V DC suitable for a variety of different applications.
The relay alarm outputs are programmable for maximum and minium values. Switching delay times can be programmed between 1second and 9 hours.
Peak value indication for minimum and maximum measured values are stored in the background and can be read out from the display
at any time.
The fault alarm monitors for open circuit in the input signal and determines what action is to follow with the alarm relays and/or analog output.

Specifications

Inputs  
Input 0/4 ... 20 mA; 0/2 ... 10 V DC
  Fault Detection open circuit in the measuring circuit
  Basic Accuracy Current input 10 ohm, voltage input 10 kohm
  Temperature Coefficient <0.1 %, ±1 Digit
  Transmitter Supply 0.01 %/K
Output  
  Alarm Outputs Relay SPDT < 250 V AC < 250 VA < 2 A cosn 􀁆 0,3, < 300 V DC < 40 W <2 A
  Analog Outputs 0/4 ... 20 mA load 500ohm; 0/2 ... 10 V load >500ohm, galv. isolated,
output changes automatically (load impedance dependent).
  Accuracy 0.2 %;TK 0.01 %/K
Fault Function For open circuit detection
- Analog output 0 mA, < 3.6 mA or > 21.5 mA programmable
- Alarm output(s) min. or max. function programmable
Display Graphic LCD-Display 128x64 pixels, white background illuminated
  Units of measure display mV, V, mA, A, Ohm, kohm, μS/cm, mS/cm, °C, °F, min , rpm,
bar, mbar, hPa, mm, cm, m, %, °, l, l/min, m³, m³/h, ppm
custom units programmable
Case Polyamide (PA) 6.6, UL94V-0, DIN rail mounting TS 35
  Weight ~ 450g
  Connections Screw terminals 0.14 ... 2.5 mm² (AWG 26 .. 14)
  Protection Case IP30, terminals IP20, German BGV A3
Power Supply  
  Supply Voltage 230 V AC ±10 %, 115 V AC ±10 %, or 24 V DC ±15 %
  Power Consumption < 5 VA
  Operating Temperature -10 ... 55 °C (14 ... 131 °F)
  Rated Voltage 250 VAC acc. to EN 60664-1:2007
between input/relay output/analog output/supply voltage
degree of pollution 2, overvoltage category III
  Tested 4 kV DC between input/relay output/analog output/supply voltage

Ordering information

Model Description US $  
MR50-12RO100 Base Configuration for 2 Relays no analog outputs 110V supply from ~$470
MR50-12R2RAO1 Fully loaded 4 relays + analog output ~$685
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