Mini Maestro User Guide 13
Issue Number: 5 www.controltechniques.com
3.2 Grounding
To avoid intermittent tripping of the drive, use a single ground point for the supply and
signal circuits. A grounding bar of appropriate size can be used. This must be mounted
on insulated supports as close as possible to the drive and connected to the chassis
ground using cable of 10mm
2
to 20mm
2
. The shortest possible wiring should be used.
The connection to the chassis terminal of the enclosure must be adequately sized.
If in doubt, consult the supplier of the drive.
Figure 3-4 Ground connections
3.3 External power supply
A single external power supply may be used to supply a number of drives.
Peak motor current less than 15A
Use a single-phase or three-phase AC supply.
Peak motor current 15A or greater
Use a three-phase AC supply.
Signal cables and supply cables must be segregated and wired through different
trunking
NOTE
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