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6185
 

6185

 

Loop-powered isolator

 

  • 1-, 2- and 4-channel galvanic isolation
  • Slimline channel width of less than 6 mm
  • No separate supply necessary
  • Low response time
  • High noise suppression
  1. Overview

  2. Technical details


Application

  • Galvanic separation of analog current signals.
  • Elimination of ground loops and measurement of floating signals.
  • A competitive choice in terms of both price and technology for galvanic isolation of current signals to SCADA systems or PLC equipment.
  • Especially useful in applications necessitating an unproblematic transmission of current signals according to NAMUR (sensor error detection).

Technical characteristics

  • PR 6185 is powered by the measured signal and loads the loop with max. 1.8 VDC.
  • The input is protected against overvoltage and polarity error.
  • The drop voltage for each channel can be calculated according to the following expression: Vdrop = 1.8 + (Iout. * Rload.
  • The output is voltage-limited to 15 VDC.
  • Inputs and outputs are floating and galvanically separated.

Mounting / installation

  • Mounted vertically or horizontally on a DIN rail. As the devices can be mounted without distance between neighboring units, up to 168 channels can be mounted per meter.

Environmental Conditions

Operating temperature -20°C to +60°C
Calibration temperature 20...28°C
Relative humidity < 95% RH (non-cond.)
Protection degree IP20

Mechanical specifications

Dimensions (HxWxD) 109 x 23.5 x 104 mm
Weight approx. 155 / 180 / 230 g (1 / 2 / 4 channels)
DIN rail type DIN 46277
Wire size 1 x 2.5 mm2 stranded wire
Screw terminal torque 0.5 Nm

Common specifications

Supply

Power dissipation, per channel 40 mW

Isolation voltage

Test voltage 2 kVAC

Response time

Response time (0...90%, 100...10%) < 4 ms
Voltage drop < 1.8 VDC, min. 1.8 V + (Iout.*Rload), max.
Signal / noise ratio Min. 60 dB (0...100 kHz)
Accuracy Better than 0.1% of selected range
EMC immunity influence < ±0.5% of span

Input specifications

Current input

Measurement range 0...23 mA
Input resistance ≈ 90 Ω + Rload (@ 20 mA)

Output specifications

Current output

Signal range 0...23 mA
Min. signal range 1:1
Load (@ current output) ≤ 600 Ω
Load stability < 0.03% of span / 100 Ω
Current limit 50 mA
Voltage limit 15 VDC
*of span = of the presently selected range

Observed authority requirements

EMC 2014/30/EU
EAC TR-CU 020/2011
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