4-3 890CS & 890CD Common Bus Units
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames B, C & D
Main Points
♦ These are modular, cubicle-mounted units. They are not suitable for wall-mounting.
♦ Mount the Modules side-by-side vertically on a solid, flat, normally cool, non-flammable, vertical
surface.
♦ The 890CS Common Bus Supply is normally mounted to the left of the 890CD Common Bus Drive(s).
♦ The units can be DIN rail or panel mounted.
♦ Fit the 890 Installation kit to the bottom of the drive.
♦ Adequate ventilation must be provided.
♦ Avoid excessive vibration.
♦ The earth points (D, E, G, M & S) are shown separated - it may be possible to use one large star point
without EMC problems, this will depend upon your application.
Note Refer to Appendix C for information about EMC compliance.
Sizing the Enclosure
The enclosure must comply with the European safety standards VDE 0160/EN50178 and will require a tool
for opening.
The size of the enclosure will depend on many factors:
♦ Physical size and number of units
♦ Ventilation clearances
♦ Power output, affected by derating due to altitude and ambient temperature
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