Baldor MN1274 06/2001 installation manual Grounding, MintDrive, Single phase units

2.3.1Grounding

Single phase units

AC Mains L
Supply	N
Earth
Safety Ground
	Driven Earth
		Circuit breaker
	Ground Rod	or fuses.
(Plant Ground)		See section
		2.3.3.

MintDrive

L N U V W

Route all 3 wires L, N, and Earth (Ground) together in conduit or cable. Power wires must be kept separate from control signal wires.

Note: Wiring shown for clarity of grounding method only. Not representative of actual terminal block location.

Ground as per

NEC and local codes.

Figure 2 - Recommended single phase system grounding

Note: For CE compliance, a 3-phase mains filter must be connected between the mains supply and the MintDrive. The MintDrive and motor earths should be connected to the enclosure backplane. (The enclosure backplane should be connected to the earth at the mains source. There should be a separate connection from the earth at the mains source to the plant ground rod).

Three phase units

AC Mains	L1	MintDrive					Note: Wiring shown for clarity of
Supply							grounding method only.
	L2	L1 L2	L3	U	V	W	Not representative of actual
							terminal block location.
Four Wire
“Wye”	L3
Safety	Earth
Ground

Driven Earth	Circuit breaker	Route wires L1, L2, L3 and
Ground Rod	or fuses.	Earth (Ground) together in
(Plant Ground)	See section	conduit or cable. Power wires	Ground as per
	2.3.3.	must be kept separate from
		control signal wires.	NEC and local codes.

Figure 3 - Recommended 3-phase system grounding

Note: For CE compliance, a 3-phase mains filter must be connected between the mains supply and the MintDrive. The MintDrive and motor earths should be connected to the enclosure backplane. (The enclosure backplane should be connected to the earth at the mains source. There should be a separate connection from the earth at the mains source to the plant ground rod).

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