1. General Introduction
The device converts the signal of a resistance thermometer, thermocouple, potentiometer, or voltage source to a
proportional output current. It also provides a relay trip value. The removable terminal block K-CJC-** is available as an
accessory for internal cold junction compensation of thermocouples. A fault is signalized by LEDs acc. to NAMUR NE44 and a
separate collective error message output. The device is easily configured by the use of the PACTware configuration software.
For additional information, refer to the manual.
2. General Specification for KFD2-UT2-1
Model | KFD2-UT2-1 |
General specifications | |
Signal type | Analog input |
Functional safety related parameters | |
Safety Integrity Level (SIL | SIL 2 |
Supply | |
Connection | terminals 23+, 24- or power feed module/Power Rail |
Rated voltage Ur | 20 ... 30 V DC |
Rated current Ir | approx. 100 mA |
Power dissipation/power consumption | ≤2 W / 2.2 W |
Interface | |
Programming interface | programming socket |
Input | |
Connection side | field side |
Connection | terminals 1, 2, 3, 4, 6 |
RTD | Pt100, Pt500, Pt1000, Ni100, Ni1000 |
Measuring current | approx. 400 A with resistance measuring sensor |
Types of measuring | 2-, 3-, 4-wire technology |
Lead resistance | ≤ 50 Ω per line |
Measurement loop monitoring | sensor breakage, |
Thermocouples | type B, E, J, K, L, N, R, S, T (IEC 584-1: 1995) |
Cold junction compensation | external and internal |
Measurement loop monitoring | sensor breakage |
Potentiometer | 0.8 ... 20 k |
Voltage | 0 ... 10 V , 2 ... 10 V , 0 ... 1 V , -100 ... 100 mV |
Input resistance | ≥250 k(0 ... 10 V) ≥1 M(0 ... 1 V, -100 ... 100 mV) |
Measuring current | approx. 400 ìA with resistance measuring sensor |
Output | |
Connection side | control side |
Connection | output I: terminals 10, 11, 12 output II: terminals 16, 17, 18 output III: terminals 8+, 7- |
Output I, II | relay |
Contact loading | 250 V AC / 2 A / cos ≥0.7 ; 40 DC / 2 |
Mechanical life | 5 x 107 switching cycles |
Energized/De-energized delay | approx. 20 ms / approx. 20 ms |
Open loop voltage | ≤24 V DC |
Fault signal | downscale I ≤3.6 mA, upscale I ≥21 mA (acc. NAMUR NE43) |
Collective error message | Power Rail |
Transfer characteristics | |
Deviation | |
Temperature effect | Input: 0.005 %/K (50 ppm) of span ; current output: 0.005 %/K (50 ppm) of span |
RTD | ≤0.2 % of span |
Thermocouples | max. 10μV deviation of CJC: ±0.8 K |
Voltage | 0.1 % of span |
Potentiometer | 0.1 % of span when < 5 k 0.5 % of span when > 5 k |
Current output | ≤ 20 ìA |
Galvanic isolation | |
Input/Other circuits | reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff |
Output I, II against eachother | reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 |
Output I, II/other circuits | reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff |
Output III/power supply and collective error | reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff |
Interface/power supply | reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff |
Indicators/settings | |
Display elements | LEDs display |
Control elements | Control panel |
Configuration | via operating buttons via PACTware |
Labeling | space for labeling at the front |
Directive conformity | |
Electromagnetic compatibility | |
Directive 2014/30/EU | EN 61326-1:2013 (industrial locations) |
Conformity | |
Electromagnetic compatibility | NE 21:2011 |
Degree of protection | IEC 60529:2001 |
Ambient conditions | |
Ambient temperature | -20 ... 60 °C (-4 ... 140 °F) |
3. Connection
4. Assembly
