Resolution:
The Altivar 600/900 Process has 2 expansion slots:

• Slot A (Right)
  • Legacy communication options
  • Advance Ethernet (only for ATV600)
  • IO Extension Module (VW3A3203)
  • IO Relays (VW3A3204)
• Slot B (Left)
  • IO Extension Module (VW3A3203)
  • IO Relays (VW3A3204)
  • Encoder Module (only for ATV900)
• Slot C (Top) - (VW3A3800 - Only for ATV900)
  • IO Extension Module (VW3A3203)
  • IO Relays (VW3A3204)
  • Safety option “premium” (VW3A3802)

Control electronic size does not change (even with 2 expansion cards used).
It is not possible to use the same expansion card twice and maximum one communication card is allowed.

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Released for: Schneider Electric Singapore