Pepperl Fuchs KFA6-DWB-Ex1.D Rotation Speed Monitor (231207)

P&F KFA6-DWB-Ex1.D is a 1-channel rotation speed monitor for intrinsic safety applications, designed to detect overspeed or underspeed conditions via NAMUR sensors or dry contacts. Operated on a 230 V AC supply, the unit compares actual input frequency against a user-defined reference and activates relay outputs accordingly. Configuration is straightforward using the integrated keypad, with support for start-up override and line fault detection. Certified up to SIL 2, it’s ideal for critical speed monitoring in hazardous areas.

Technical Specifications

• Model: KFA6-DWB-Ex1.D
• Function: Overspeed/Underspeed Monitoring
• Channels: 1
• Input Signal: NAMUR or mechanical contact
• Input Frequency: 0.001 … 5000 Hz
• Outputs: 2 x Relay contacts (terminals 10–12, 16–18)
• Line Fault Detection: Break ≤ 0.15 mA, Short > 6.5 mA
• Start-up Override: 1–1000 s adjustable
• Power Supply: 230 V AC ±10%
• Mounting: 35 mm DIN rail (EN 60715)
• Connection Type: Screw terminals

Electrical Features

• Relay Contact Rating: 253 V AC / 2 A, 40 V DC / 2 A
• Mechanical Life: 5 × 10⁷ switching cycles
• Open Circuit Voltage: 18 V
• Short-Circuit Current: 5 mA
• Response Delay: ≤ 200 ms
• Resolution: 0.1% of measurement value
• Accuracy: 0.1% of measurement value
• Measuring Time: < 100 ms
• Configuration: On-device keypad

Environmental Conditions

• Temperature Range: -20 … 60 °C
• Protection Rating: IP20
• Weight: Approx. 300 g
• Dimensions: 40 x 119 x 115 mm (W x H x D)
• Housing Type: C2
• Display: LEDs and control panel

Hazardous Area Compliance

• Zone Classification: Zone 0, 1, 2 / Div. 1, 2
• ATEX Marking: II (1) G [Ex ia Ga] IIC / II (1) D [Ex ia Da] IIIC
• IECEx Marking: [Ex ia Ga] IIC / Ex nA nC IIC T4 Gc
• Maximum Safe Voltage: Um 253 V AC
• SIL Rating: SIL 2 (IEC/EN 61508 / 61511)

Key Features & Benefits

✅ High-Speed Monitoring: Detects underspeed/overspeed from 1 mHz to 5 kHz.

✅ Built-in Relay Outputs: 2 relays for real-time alarm or shutdown control.

✅ SIL 2 Certified: Meets functional safety standards for critical systems.

✅ Easy Setup: Keypad configuration with LED display.

✅ Fail-Safe Design: Line fault detection and start-up override included.

📦 Buy Pepperl+Fuchs KFA6-DWB-Ex1.D from Drive Outlet Megastore

At Drive Outlet Megastore we offer unbeatable KFA6-DWB-Ex1.D prices.

This compact, high-precision speed monitoring unit is ideal for applications requiring Ex-zone compliance and reliable safety signaling.

Ready for immediate dispatch with next-day UK delivery.

Contact us now to buy or request bulk pricing.