34 Unidrive M600 Getting Started Guide
Issue Number: 2
4.4 Ground connections
The drive must be connected to the system ground of the AC supply. The ground wiring must
conform to local regulations and codes of practice.
On size 3 and 4, the supply and motor ground connections are made using the M4 studs located
either side of the drive near the plug-in power connectors. See Figure 4-1 and Figure 4-2 for details.
On size 5, the supply and motor ground connections are made using the M5 studs located near the
plug-in power connector. Refer to Figure 4-3.
On a size 6, the supply and motor ground connections are made using the M6 studs located above
the supply and motor terminals. Refer to Figure 4-4.
On size 7, the supply and motor ground connections are made using the M8 studs located by the
supply and motor connection terminals. Refer to Figure 4-5.
On size 8, the supply and motor ground connections are made using the M10 studs located by the
supply and motor connection terminals. Refer to Figure 4-5.
On size 9E and 10, the supply and motor ground connections are made using the M10 studs located
by the supply and motor connection terminals. Refer to Figure 4-6.
Electrochemical corrosion of grounding terminals
Ensure that grounding terminals are protected against corrosion i.e. as could be caused
by condensation.
For further information on ground cable sizes, refer to Table 2-6 Protective ground cable
ratings on page 11.
The ground loop impedance must conform to the requirements of local safety regulations.
The drive must be grounded by a connection capable of carrying the prospective fault
current until the protective device (fuse, etc.) disconnects the AC supply.
The ground connections must be inspected and tested at appropriate intervals.
Unidrive M600 Getting Started Guide English Iss1.book Page 34 Friday, April 25, 2014 2:08 PM
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