6185
Loop-powered isolator
6185
– 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
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).
Connections
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.
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Environmental Conditions
Specifications range.......................................
Calibration temperature.................................
Relative humidity............................................
Protection degree...........................................
Output specifications
-20°C to +60°C
20...28°C
< 95% RH (non-cond.)
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
Isolation voltage
Test voltage.................................................... 2 kVAC
Current output
Signal range...................................................
Min. signal range............................................
Load (@ current output).................................
Load stability..................................................
Current limit....................................................
0...23 mA
1:1
≤ 600 Ω
< 0.03% of span / 100 Ω
50 mA
Voltage limit.................................................... 15 VDC
*of span.......................................................... = of the presently selected
range
Observed authority requirements
EMC............................................................... 2014/30/EU
Approvals
EAC................................................................ TR-CU 020/2011
Response time
Response time (0...90%, 100...10%)............. < 4 ms
Internal consumption, per
channel........................................................... 40 mW
Voltage drop................................................... < 1.8 VDC, min.
Voltage drop................................................... 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)
6185-042016
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