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.
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