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ALSTOM DFI-150-0003
ALSTOM DFI-150-0003

ALSTOM DEP232

Product Name:​ DEP232 Serial Interface / Digital Output Module
Manufacturer:​ ALSTOM (now part of GE / Alstom Signaling)
Part Number:​ 029.223003
Product Category:​ DCS communication interface card or digital I/O module for Alspa / railway interlocking systems
Key Features:
  • Plugs into standard Alstom Alspa P320/P620 I/O rack or signaling backplane
Category:
Description
  • Provides serial communication ports (RS-232 / RS-485) or multiple digital outputs depending on variant
  • Optical isolation between field side and backplane
  • Fail-safe design for vital railway applications
Technical Specifications (typical):
  • Backplane Supply:​ 24 VDC (from rack)
  • Communication Ports:​ 1–2 × serial (RS-232 DB9 or RS-485 screw terminals)
  • Supported Protocols:​ Modbus RTU, IEC 60870-5-101, proprietary Alstom ASCII frames
  • Baud Rate:​ 300 bps – 115.2 kbps
  • Isolation:​ ≥ 2500 Vrms (port to backplane)
  • ESD Protection:​ ±15 kV (IEC 61000-4-2)
  • Operating Temp:​ -40 °C to +70 °C (railway grade)
  • Certifications:​ EN 50121, EN 50128, EN 50129, SIL rated in vital versions
  • Mounting:​ Rack backplane insertion
  • Protection:​ IP20 (inside enclosure)
Applications:
  • Alspa DCS extension for third-party device communication (meters, protection relays)
  • Electronic interlocking & CBTC wayside I/O in metro/rail systems
  • Track circuit occupancy / point detection interface
Installation Notes:
  • Verify firmware/backplane compatibility before installation
  • For serial use, set termination resistors correctly on the bus
  • Only qualified personnel should handle vital (SIL) configured variants
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