- 1-channel isolated barrier
- 24 V DC supply (Power Rail)
- TC, RTD, potentiometer or voltage input
- Current output 0/4 mA ... 20 mA
- Sink or source mode
- Configurable by PACTwareTM
- Line fault (LFD) and sensor burnout detection
- Up to SIL2 acc. to IEC 61508
This isolated barrier is used for intrinsic safety applications. It is designed to connect RTDs, thermocouples, or potentiometers in the hazardous area, and provide a proportional 0/4 mA ... 20 mA signal to the safe area.
The barrier offers 3-port isolation between input, output, and power supply.
A removable terminal block K-CJC-** is available for thermocouples when internal cold junction compensation is desired.
A fault is indicated by a red flashing LED per NAMUR NE44 and user-configured fault outputs.
The unit is easily programmed with the PACTwareTM configuration software.
A collective error messaging feature is available when used with the Power Rail system.
|Signal type||Analog input|
|Connection||terminals 14+, 15- or power feed module/Power Rail|
|Rated voltage||20 ... 30 V DC|
|Ripple||within the supply tolerance|
|Power loss/power consumption||≤ 0.95 W / 0.95 W|
|Connection||terminals 1, 2, 3, 4|
|Measuring current||approx. 200 µA with RTD|
|Types of measuring||2-, 3-, 4-wire connection|
|Lead resistance||≤ 50 Ω per lead|
|Measuring circuit monitoring||sensor burnout, sensor short-circuit|
|Cold junction compensation||external and internal|
|Measuring circuit monitoring||sensor burnout|
|Voltage||selectable within the range -100 ... 100 mV|
|Potentiometer||0 ... 20 kΩ (2-wire connection), 0.8 ... 20 kΩ (3-wire connection)|
|Input resistance||≥ 1 MΩ (-100 ... 100 mV)|
|Connection||output I: terminal 7: source (-), sink (+), terminal 8: source (+), terminal 9: sink(-)|
|Output||Analog current output|
|Current range||0 ... 20 mA or 4 ... 20 mA|
|Fault signal||downscale 0 or 2 mA, upscale 21.5 mA (acc. NAMUR NE43)|
|l downscale 0 or 2 mA, upscale 21.5 mA (acc. NAMUR NE43) Source||
|Sink||Voltage across terminals 5 ... 30 V. If the current is supplied from a source > 16.5 V, series resistance of ≥ (V - 16.5)/0.0215 Ω is needed, where V is the source voltage.
The maximum value of the resistance is (V - 5)/0.0215 Ω.
|Influence of ambient temperature||deviation of CJC included:
|Influence of supply voltage||< 0.01 % of span|
|Influence of load||≤ 0.001 % of output value per 100 Ω|
|Reaction time||sensor burnout and sensor short circuit selected where appropriate mV: 1 s, thermocouples with CJC: 1.1 s, thermocouples with fixed reference temperature: 1.1 s, 3- or 4-wire RTD: 920 ms, 2-wire RTD: 800 ms, Potentiometer: 2.05 s|
|Output/supply, programming input||functional insulation acc. to IEC 62103, rated insulation voltage 50 Veff
There is no electrical isolation between the programming input and the supply.
The programming cable (see section accessories and installation) provides galvanic isolation so that ground loops are avoided.
|Directive 2004/108/EC||EN 61326-1:2006|
|Insulation coordination||UL 61010-1|
|Electromagnetic compatibility||NE 21:2006|
|Protection degree||IEC 60529|
|Ambient temperature||-20 ... 60 °C (-4 ... 140 °F)|
|Mass||approx. 130 g|
|Dimensions||20 x 119 x 115 mm (0.8 x 4.7 x 4.5 in) , housing type B2|
|Data for application in connection with Ex-areas|
|EC-Type Examination Certificate||CESI 04 ATEX 143 , for additional certificates see www.pepperl-fuchs.com|
|Group, category, type of protection||Ex II (1)GD, I (M1), [Ex ia] IIC, [Ex iaD], [Ex ia] I (-20 °C ≤ Tamb = 60 °C) [circuit(s) in zone 0/1/2]|
|Input||Ex ia IIC|
|Inputs||terminals 1, 2, 3, 4|
|Analog outputs, power supply, collective error|
|Maximum safe voltage Um||250 V (Attention! This is not the rated voltage.)|
|Maximum safe voltage Um||250 V (Attention! The rated voltage is lower.), RS 232|
|Statement of conformity|
|Group, category, type of protection, temperature class||Ex II 3G Ex nA II T4 [device in zone 2]|
|Input/Other circuits||safe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V|
|Directive 94/9/EC||EN 60079-0:2006, EN 60079-11:2007, EN 60079-15:2005, EN 60079-26:2007, EN 61241-0:2006, EN 61241-11:2006|
|Control drawing||366-024CS-12 (cCSAus)|
|IECEx approval||IECEx TUN 07.0003|
|Approved for||[Zone 0] [Ex ia] IIC, [Ex iaD], [Ex ia] I|
|Supplementary information||EC-Type Examination Certificate, Statement of Conformity, Declaration of Conformity, Attestation of Conformity and instructions have to be observed where applicable. For information see www.pepperlfuchs.com|
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KFD2-UT2-EX1 : KFD2UT2EX1 Specification
Alternative Part Number: 248764
Manufacturer: Pepperl + Fuchs
Pricing Unit: Each
Weight: 0.300 kg (each)
Tariff code: 85365080
Generic code: PFPA10
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