IFM Electronic FR-1 Frequency/Speed Monitor

- Brand: IFM Electronic
- Model: DD2001
- Type: Frequency/Speed Monitor (Speed Monitor / Pulse Evaluator)
- All tech specs
  - Function: Monitors and evaluates pulse sequences from sensors for speed, rotational speed, standstill, slip, blocking, under/over-speed detection
  - Input: 1-channel pulse input (2-wire or 3-wire sensors)
  - Input Frequency Range: 0.1 Hz – 10 kHz 
  - Input Type: PNP/NPN, 2-wire, NAMUR, TTL, HTL
  - Switching Output: 2 × relay contacts (change-over, SPDT)
  - Relay Rating: 230 V AC / 24 V DC, 6 A resistive / 2 A inductive
  - Setpoint Adjustment: 2 independent switching points (adjustable via front keys)
  - Hysteresis: Adjustable 0 – 100 % of set value
  - Start-up Delay: 0 – 999 s 
  - Monitoring Modes: Speed monitoring, standstill detection, direction of rotation, slip monitoring, blocking detection
  - Display: 4-digit LED display (red/green) for actual value, setpoint, operating status
  - Supply Voltage: 24 V DC ±20 %
  - Current Consumption: < 100 mA
  - Operating Temperature: -25 °C to +60 °C
  - Protection Rating: IP50 
  - Mounting: DIN rail 
  - Housing Material: Plastic
  - Features: Teach function for easy set-point setting, LED status indicators, adjustable hysteresis, programmable start-up bypass, compact design
- Dimension: 120 x 80 x 50 mm
- Weight: 300 g
- Country of origin: Germany
- HS code: 903289