PR Electronics 3118 Bipolar Isolated Converter / Splitter

Features

  • Conversion of voltage and current bipolar process signals to uni-/bipolar signals
  • Multiple signal ranges are selectable via DIP-switches
  • Splitter function: 1 signal in and 2 signals out
  • Excellent accuracy, better than 0.05 % of selected range and high output load stability
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PR Electronics 3118 Bipolar Isolated Converter / Splitter is a versatile and reliable device designed for the isolation, conversion, and splitting of standard bipolar analog process signals into two individual unipolar analog signals. With 4-port isolation, this unit provides surge suppression, protecting control systems from transients and noise, while effectively eliminating ground loops and facilitating the measurement of floating signals.

Applications

  • Signal Conversion and Splitting: Converts and splits standard bipolar analog process signals into two individual unipolar analog signals, ensuring precise and interference-free transmission.
  • Ground Loop Elimination: Eliminates ground loops, enhancing the accuracy and stability of signal measurements.
  • Floating Signal Measurement: Ideal for measuring floating signals, ensuring reliable system performance.
  • Industrial Compatibility: Suitable for mounting in Safe areas, Zone 2, Cl. 1 Div 2 areas, and marine applications, ensuring broad applicability.
  • Configurable Analog Output: The analog output can be easily configured and programmed to be bipolar in the ranges ±10 mA and ±20 mA (special setup).

Technical Characteristics

  • Flexible Power Supply: Operates with a 24 VDC (±30%) supply via power rail or connectors.
  • High Conversion Accuracy: Provides excellent conversion accuracy, better than 0.05% of the selected range.
  • Operation Status Indicator: A green front LED indicates the operational status of the device.
  • Overvoltage and Polarity Protection: All terminals are protected against overvoltage and polarity errors, ensuring long-term reliability.
  • EMC Performance: Meets NAMUR NE21 recommendations, ensuring top measurement performance in harsh EMC environments.
  • High Galvanic Isolation: Features high galvanic isolation of 2.5 kVAC for robust signal separation.
  • Fast Response Time: Offers a fast input-to-output response time of less than 7 ms, with bandwidth damping (10 Hz) possible via DIP-switch.
  • Signal/Noise Ratio: Ensures an excellent signal-to-noise ratio greater than 60 dB.
  • Low Power Consumption: Allows DIN rail mounting without the need for an air gap, thanks to very low power consumption.
  • Wide Temperature Range: Operates in a wide temperature range of -25 to +70°C, making it suitable for various environments.

Mounting / Installation / Programming

  • Easy Configuration: Simple configuration of factory-calibrated measurement ranges via DIP-switches for quick and hassle-free setup.

PR Electronics 3118 Bipolar Isolated Converter / Splitter is an ideal solution for industries requiring reliable and accurate signal conversion, splitting, and isolation, particularly in environments with stringent safety and performance requirements.

Specification

ENVIRONMENTAL CONDITIONS
Operating temperature -25°C to +70°C
Storage temperature -40°C to +85°C
Calibration temperature 20…28°C
Relative humidity < 95% RH (non-cond.)
Protection degree IP20
Installation in Pollution degree 2 & meas. / overvoltage cat. II
MECHANICAL SPECIFICATIONS
Dimensions (HxWxD) 113 x 6.1 x 115 mm
Weight approx. 70 g
DIN rail type DIN EN 60715/35 mm
Wire size 0.13…2.5 mm2 / AWG 26…12 stranded wire
Screw terminal torque 0.5 Nm
Vibration IEC 60068-2-6
2…25 Hz ±1.6 mm
25…100 Hz ±4 g
COMMON SPECIFICATIONS
Supply
Supply voltage 16.8…31.2 VDC
Max. required power 1.20 W
Max. power dissipation 0.43 W
Isolation voltage
Isolation voltage, test / working 2.5 kVAC / 300 VAC (reinforced)
Zone 2 / Div. 2 250 VAC
Response time
Response time (0…90%, 100…10%) < 7 ms or < 44 ms
MTBF, acc. to IEC 61709 (SN29500) > 187 years
Signal / noise ratio Min. 60 dB (0…100 kHz)
Signal dynamics, input Analog signal chain
Signal dynamics, output Analog signal chain
Programming DIP-switches
Cut-off frequency (3 dB) > 100 Hz or 10 Hz (selectable via DIP-switch)
Accuracy < ±0.05% of span
Temperature coefficient < ±0.01% of span / °C
EMC immunity influence < ±0.5% of span
Extended EMC immunity: NAMUR NE21, A criterion, burst < ±1% of span
INPUT SPECIFICATIONS
Current input
Measurement range -23…+23 mA
Programmable measurement ranges ± 10 and ± 20 mA
Input voltage drop < 1 VDC @ 23 mA
Voltage input
Measurement range -11.5…+11.5 V
Programmable ranges ±5 and ±10 V
Input resistance ≥ 1 MΩ
OUTPUT SPECIFICATIONS
Current output
Signal range 0…23 mA
Programmable signal ranges 0 / 4…20 mA
Bipolar wiring and programming set-up ±10 and ± 20 mA
Load (@ current output) ≤ 300 Ω per channel
Load stability ≤ 0.002% of span / 100 Ω
Current limit ≤ 28 mA
Voltage output
Signal range 0…10 VDC
Programmable signal ranges 0/1…5 and 0/2…10 V
Load (@ voltage output) ≥ 10 kΩ
of span = of the presently selected range
I.S. / EX MARKING
ATEX II 3 G Ex nA IIC T4 Gc
IECEx Ex nA IIC T4 Gc
FM, US Cl. I, Div. 2, Gp. A, B, C, D T4 or Cl. I, Zone 2, AEx nA IIC T4
FM, CA Cl. I, Div. 2, Gp. A, B, C, D T4 or Cl. I, Zone 2, Ex nA IIC T4
OBSERVED AUTHORITY REQUIREMENTS
EMC 2014/30/EU
LVD 2014/35/EU
RoHS 2011/65/EU
EAC TR-CU 020/2011
EAC Ex TR-CU 012/2011
APPROVALS
ATEX KEMA 10ATEX0147 X
IECEx KEM 10.0068X
c FM us FM17US0004X / FM17CA0003X
c UL us, UL 61010-1 E314307
EAC Ex RU C-DK.HA65.B.00355/19
DNV-GL Marine TAA00001RW

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