Pepperl+Fuchs KFD2 SR2

Switch Amplifier

Pepperl+Fuchs KFD2 SR2

The Pepperl+Fuchs KFD2 SR2 is an isolated barrier for the safe transfer of digital signals from potentially explosive areas (Ex) to non-hazardous areas (Non-Ex). The barrier has two channels, each of which can receive signals from dry contacts or NAMUR sensors.

Datasheet:

• Protection class: Ex d IIC T6 Ga
• Supply voltage: 24 V DC (Power Rail)
• Inputs: dry contacts or NAMUR sensors
• Output: relay contact
• Line fault detection (LFD)
• Reversible mode of operation
• Up to SIL 2 (SC 3) according to IEC/EN 61508

The KFD2 SR2 series includes the following models:

• KFD2-SR2-Ex1.W - model for zone 1/22
• KFD2-SR2-Ex1.W.LB - model for zone 1/22 with integrated safety bumper
• KFD2-SR2-Ex2.W - model for zone 2/22
• KFD2-SR2-2.W.SM - model for zone 2/22 with a miniature housing
• KFD2-SR2-Ex2.2S - model for zone 2/22 with double error protection
• KFD2-SR2-2.2S - model for zone 2/22 with double error protection and miniature housing

Advantages of use:

• Safe transfer of digital signals from Ex zones to Non-Ex zones
• Two channels for increased reliability
• Support for dry contacts and NAMUR sensors
• Relay output for controlling external devices
• Line error monitoring to ensure reliable operation
• Reversible operating mode for flexibility
• Up to SIL 2 for high safety