Pepperl+Fuchs KFD2-ST3-Ex2
Switch Amplifier
- 2-channel isolated barrier
- 24 V DC supply (Power Rail)
- Dry contact or NAMUR inputs
- Active transistor output
- Line fault detection (LFD)
- Reversible mode of operation
- Up to SIL 2 acc. to IEC 61508
- Overview +
- Comments +
The KFD2-ST3-Ex2 is a three-channel isolator specifically designed for analog signals in hazardous areas. It provides galvanic isolation between the input and output circuits, which enhances safety by preventing ground loops. The device is suitable for temperature sensors, pressure transducers, and other field devices, ensuring reliable data transmission in explosive atmospheres.
Datasheet:
| Rated voltage | 19 ... 30 V DC |
| Connection | terminals 1+, 2+, 3-; 4+, 5+, 6- |
| Configuration | via DIP switches |
| Line fault detection | breakage I 0.1 mA , short-circuit I 6.5 mA |
| Open circuit voltage/short-circuit current | approx. 10 V DC / approx. 8 mA |
| Display elements | LEDs |
| Electromagnetic compatibility | NE 21:2012 , EN 61326-3-2:2008 |
| Rated current | 100 mA |
| Labeling | space for labeling at the front |
| Dimensions | 20 x 119 x 115 mm (0.8 x 4.7 x 4.5 inch) , housing type B2 |
| Response time | 200 micro/s |
| Control elements | DIP-switch |
| Rated voltage | 30 V DC |
| Connection side | control side |
| Connection | screw terminals |
| Mass | approx. 150 g |
| Switching frequency | 5 kHz |
| Safety Integrity Level (SIL) | SIL 2 |
| Ripple | 10 % |
| Signal type | Digital Input |
| Connection | output I: terminal 7+ ; output II: terminal 9+ |
| Ambient temperature | -20 ... 60 ?°C (-4 ... 140 ?°F) |
| Mounting | on 35 mm DIN mounting rail acc. to EN 60715:2001 |
| Collective error message | Power Rail |
| Output I | signal ; Transistor |
| Connection | Power Rail or terminals 14+, 15- |
| Output II | signal ; Transistor |
| Signal level | 1-signal: (supply voltage) - 3 V max. for 100 mA 0-signal: blocked output (off-state current 10 andmicro;A) |
| Optional accessories | power feed module KFD2-EB2 Universal Power Rail UPR-03 Universal Power Rail UPR-03-S profile rail K-DUCT-BU profile rail K-DUCT-UPR-03 |
| Rated values | acc. to EN 60947-5-6 (NAMUR) |
| Pulse/Pause ratio | min. 100 micro/s / min. 100 micro/s |
| Rated current | 20 ... 15 mA + Iout |
| Switching point/switching hysteresis | 1.2 ... 2.1 mA / approx. 0.2 mA |
| Connection side | field side |
| Power dissipation | 900 mW including maximum power dissipation in the output |
| EU-Type Examination Certificate | EXA 16 ATEX 0016 X |
| Degree of protection | IP20 |
| Degree of protection | IEC 60529:2001 |
| IECEx approval | IECEx EXA 16.0009X |
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