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.
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