ABB ACH550-UH-011A-6 User Manual page 423

Communications
Terminals 28
cables.
X1 Identification
28 SCR Screen
29 B + Positive
30 A - Negative
31 AGND
32 SCR Screen
Efficiency
Approximately 98% at nominal power level.
Losses, cooling data and noise
Method
Free space around the
unit
418
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32 are for RS485 communications. Use shielded
...
Hardware description
For the connection diagram and additional information,
see section Embedded fieldbus (EFB)
Cooling specifications
ACH550-01 User's Manual
on page 142.
Internal fan, flow direction from
bottom to top
• 200 mm (8 in) above and
below the unit
• 0 mm (0 in) along each side
of the unit
Technical data