3118
 

Bipolar isolated converter / splitter

 

3118

 

  • 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

  1. Overview + -

  2. Technical details + -

  3. Accessories + -

Application

  • The 3118 is an isolating converter and splitter which can be used for signal conversion of standard bipolar analog process signals into two individual unipolar analog signals.
  • The unit offers 4-port isolation and provides surge suppression and protects control systems from transients and noise.
  • The 3118 also eliminates ground loops and can be used for measuring floating signals.
  • Mounting of the 3118 can be in Safe area or in Zone 2 and Cl. 1 Div 2 area and is approved for marine applications.
  • 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 24 VDC (±30%) supply via power rail or connectors.
  • Excellent conversion accuracy, better than 0.05% of selected range.
  • A green front LED indicates operation status for the device.
  • All terminals are protected against overvoltage and polarity error.
  • Meeting the NAMUR NE21 recommendations, the 3118 ensures top measurement performance in harsh EMC environments.
  • High galvanic isolation of 2.5 kVAC.
  • Fast input to output response time < 7 ms / > 100 Hz – 10 Hz bandwidth damping possible via DIP-switch.
  • Excellent signal/noise ratio > 60 dB.

Mounting / installation / programming

  • Easy configuration of factory calibrated measurement ranges via DIP-switches.
  • A very low power consumption allows DIN rail mounting without the need for any air gap.
  • Wide temperature operation range: -25...+70°C.

Data sheet & Manuals

Data sheet
Manuals
Manuals in Russian

Approvals & Certificates

ATEX certificate
IECEx certificate
UKEX Certificate
CCC certificate
FM certificate
UL certificate
DNV marine certificate
EAC declaration
EAC Ex certificate
Metrology Pattern Approval (MPA), Russia

Supplementary documentation

EU Declaration of Conformity
UKCA Declaration of Conformity
EMC data

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 ≤ 1.2 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 ec IIC T4 Gc
IECEx Ex ec 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 & UK SI 2016/1091
LVD 2014/35/EU & UK SI 2016/1101
ATEX 2014/34/EU & UK SI 2016/1107
RoHS 2011/65/EU & UK SI 2012/3032
EAC TR-CU 020/2011
EAC Ex TR-CU 012/2011

Approvals

ATEX KEMA 10ATEX0147 X
IECEx KEM 10.0068X
UKEX DEKRA 21UKEX0055X
c FM us FM17US0004X / FM17CA0003X
c UL us, UL 61010-1 E314307
CCC 2020322310003554
EAC Ex RU C-DK.HA65.B.00355/19
DNV Marine TAA00001RW
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