ABB FEN-31 Pulse Encoder Interface Module

- Brand: ABB
- Model: FEN-31
- Type: Pulse Encoder Interface Module
- Product ID: 3ABD68978955
  - Function: Interface module for connecting incremental pulse encoders (TTL/RS422) to ACS880 drives for speed/position feedback
  - Supported Encoder Types: Incremental encoders with differential (RS422) or single-ended (TTL) signals
  - Input Channels: 1 encoder channel 
  - Signal Levels: Differential RS422 (5 V), single-ended TTL (5 V)
  - Max Frequency: 300 kHz (pulse rate)
  - Resolution: Up to 16384 pulses/rev 
  - Power Supply to Encoder: 5 V DC / max 200 mA (provided by module)
  - Connection: 15-pin D-sub female connector 
  - Cable Length: Up to 100 m (shielded twisted-pair recommended)
  - Isolation: Galvanic isolation between encoder and drive electronics
  - Diagnostics: Encoder fault detection (broken wire, signal loss)
  - Compatibility: ACS880 drives with F-series option slots (FEN-31 fits in slot 1 or 2)
  - Mounting: Plugs directly into drive option slot
  - Protection Rating: IP20
  - Operating Temperature: -15°C to +55°C
  - Storage Temperature: -40°C to +70°C
  - Certifications: CE, UL, RoHS compliant
  - Features: Plug-and-play installation, automatic encoder detection, supports both A/B and A/B/Z signals
- Dimensions: 100 mm × 70 mm × 25 mm 
- Weight: 220 g
- Country of origin: China
- HS code: 853890