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From Fortune 500 enterprises to innovative startups, leading companies choose Marvo for reliable automation and control components.
"Extremely Helpful. Shipped me a replacement unit next day and i was up and running within 24 hours. Replacement new from machinery manufacturers was on a 7 day lead time."
The Pepperl + Fuchs KFD2-ST2-EX1.LB is a high-performance isolated switch amplifier designed to facilitate the safe and reliable transfer of digital signals from hazardous areas to safe zones. This one-channel barrier is engineered to work with both dry contact and NAMUR sensor inputs, making it a versatile solution for a variety of industrial applications.
Equipped with an active transistor output, the KFD2-ST2-EX1.LB ensures active signal transmission to the safe area load. It also features an additional active fault output that can be utilised for enhanced monitoring and diagnostics. The device is capable of detecting line faults such as breakages or short circuits, and it provides clear indication of such faults through its LED indicators, in compliance with NAMUR NE44 standards.
The unit's mode of operation can be easily reversed, and it offers a switching frequency of up to 5 kHz, ensuring rapid signal processing for time-sensitive operations. The KFD2-ST2-EX1.LB also boasts reinforced insulation according to IEC 62103, with a rated insulation voltage of 300 Vrms, providing a robust barrier against electrical interference.
Designed for mounting on a 35 mm DIN rail, the device's compact dimensions and IP20 protection rating make it suitable for integration into a wide range of control panels and equipment housings. Its ambient operating temperature range of -20 to 60 °C ensures reliable performance even in challenging environmental conditions.
The KFD2-ST2-EX1.LB is also designed for use in conjunction with hazardous areas, holding an EC-Type Examination Certificate and conforming to the ATEX directive for intrinsic safety. This makes it an ideal choice for industries where explosive atmospheres may be present, such as in chemical processing, oil and gas, or pharmaceutical manufacturing.
Overall, the Pepperl + Fuchs KFD2-ST2-EX1.LB is a robust and reliable component for ensuring safe signal transmission in industrial environments, offering both flexibility and peace of mind for engineers and technicians.
| Specification | Description |
|---|---|
| Part Number | KFD2-ST2-EX1.LB |
| Manufacturer | Pepperl + Fuchs |
| Signal Type | Digital Input |
| Supply Connection | Power Rail or terminals 14+, 15- |
| Rated Voltage | 20 ... 30 V DC |
| Ripple | ≤ 10 % |
| Rated Current | ≤ 50 mA |
| Input Connection | Terminals 1+, 2+, 3- |
| Open Circuit Voltage | Approx. 8 V DC |
| Short-Circuit Current | Approx. 8 mA |
| Switching Point/Hysteresis | 1.2 ... 2.1 mA / approx. 0.2 mA |
| Line Fault Detection | Breakage I ≤ 0.1 mA, short-circuit I > 6 mA |
| Output Connection | Output I: terminals 7+; Output II: terminals 9+ |
| Signal Level | 1-signal: (L+) - 3.5 V (100 mA, short-circuit protected), 0-signal: switched off (≤ 10 µA) |
| Output Type | Output I: signal, electronic output, active; Output II: signal or error message, electronic output, active |
| Switching Frequency | ≤ 5 kHz |
| Electrical Isolation | Input/Output: reinforced insulation according to IEC 62103, rated insulation voltage 300 Vrms |
| Ambient Temperature | -20 ... 60 °C |
| Degree of Protection | IP20 |
| Mass | Approx. 150 g |
| Dimensions | 20 x 119 x 115 mm |
| Mounting | On 35 mm DIN mounting rail according to EN 60715 |
| EC-Type Examination Certificate | PTB 00 ATEX 2035 |
| Group, Category, Type of Protection | ¬ II (1) G [Ex ia] IIC, ¬ II (1) D [Ex ia] IIIC |
| Approvals | FM, CSA, IECEx |
Thumbs up to Rob for helping out with an urgent requirement we had on a Friday afternoon. The part we wanted was over in Europe and Rob went out of his way to get it ordered and on site here for the following Tuesday.City Bearings
Found the component i was looking for ad a great price. Great support from the staff as I was paying using a wire transfer. - Quick delivery and very good packaging.Adriano Tiberi
Extremely Helpful. Shipped me a replacement unit next day and i was up and running within 24 hours. Replacement new from machinery manufacturers was on a 7 day lead time.Sean Conlin
Found the part we needed at the best price. Spoke to Rob to make sure the part was actually in stock, as many companies don't actually have the part available to ship. It was in stock ready and the part was checked and shipped and received within a couple of days from their German stock. Would definitely use again and recommend.Chris Sentance
FIRST TIME WORKING WITH MARVO. THEY HAD WHAT I NEEDED AND TOOK GREAT CARE OF ME AND GOT MY ORDER OUT IMMEDITELY. WAS VERY IMPRESSED WITH THE SERVICE AND THE PERSON I SPOKE WITH. I WILL DEFINITELY WORK WITH THEM QGAIN IN THE FUTURE.Robert Cohen
Excellent service partially from Mark who stayed late to ensure the part arrived with me same day as this was a critical part for me even though this was my first time using Marvo. I will defiantly be using again.Josh Holt
Thumbs up to Rob for helping out with an urgent requirement we had on a Friday afternoon. The part we wanted was over in Europe and Rob went out of his way to get it ordered and on site here for the following Tuesday.City Bearings
Extremely Helpful. Shipped me a replacement unit next day and i was up and running within 24 hours. Replacement new from machinery manufacturers was on a 7 day lead time.Sean Conlin
Excellent service partially from Mark who stayed late to ensure the part arrived with me same day as this was a critical part for me even though this was my first time using Marvo. I will defiantly be using again.Josh Holt
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