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PEPPERL+FUCHSThe KFD2-CRG2-Ex1.D is a high-performance single-channel isolation safety barrier from Pepperl+Fuchs, primarily designed for intrinsically safe applications.
It is typically installed in a safe area, connecting instruments and control systems (control side) in the hazardous area (field side), providing signal isolation, conversion, power supply, and explosion-proof protection.

| Brand | Pepperl+Fuchs |
| Model / Part Number | KFD2-CRG2-Ex1.D |
| Material Number (MNR) | 255620 |
| Rated Voltage | 20 ... 30 V DC |
| Rated Current | Approx. 130 mA |
| Power Consumption | 2.5 W (Power dissipation is 2 W) |
| Power Supply | Supports power rail or terminal block (23+, 24-) power supply |
| Analog output accuracy | < 20 µA |
| Analog output resolution | ≤ 10 µA |
| Input accuracy | < 30 µA |
| Mounting method | 35 mm DIN rail mounting |
| Protection rating | IP20 |
| Operating temperature | -20 ... 60 °C |
| Dimensions (W x H x D) | 40 x 119 x 115 mm |
Q: What are some typical application scenarios for this safety barrier?
A: This safety barrier (KFD2-CRG2-Ex1.D), with its signal isolation, explosion-proof protection, and rich output interfaces (analog + dual relays), has a wide range of typical applications in the field of industrial automation.
Q: What are the differences between it and KFD2-CRG2-Ex1.D/2+?
A: Power Supply: This may indicate a specific power rail version or an improvement in terminal power supply.
Output/Input Characteristics: This may involve the number of relay contacts, load capacity, or fine-tuning of the analog output range.
Certifications or Hardware Version: This may indicate that the product has passed a newer explosion-proof certification or is a hardware upgrade with specific environmental adaptability.
Q: What precautions should be taken during installation and wiring?
A: Because the specific wiring in an industrial setting may vary slightly depending on the control system (such as the card type of DCS or PLC), it is strongly recommended that you consult the wiring diagram on the equipment casing or the official product manual before proceeding with the wiring to obtain the most accurate terminal definitions and wiring guidance.
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