Baldor MIN1853 Recommended System Grounding for UL, Recommended System Grounding 1 phase for CE

Electrical Installation All interconnection wires between the driver, AC power source, motor, host driver and any operator interface stations should be in metal conduits. Use listed closed loop connectors that are of appropriate size for wire gauge being used. Connectors are to be installed using crimp tool specified by the manufacturer of the connector. Only class 1 wiring should be used.

System Grounding Baldor drivers are designed to be powered from standard single phase lines that are electrically symmetrical with respect to ground. System grounding is an important step in the overall installation to prevent problems. The recommended grounding method is shown in Figure 3-1 for UL compliant systems (Figure 3-2 for CE compliant systems).

Figure 3-1 Recommended System Grounding for UL

L						Note:
				Microstepper Driver
AC Main
						Wiring shown for clarity of grounding
Supply N				L N	GND A+A–B+B–
						method only. Not representative of
						actual terminal block location.
Safety							Linear
		Earth	Route all 3 wires L, N, and Earth				Motor
Ground
	Driven Earth		(Ground) together in conduit or			Ground per NEC and Local codes.
			cable.
	Ground Rod
	(Plant Ground)

Note: Use shielded cable for driver signal wires. Route driver signal wires in conduit. These wires must be kept separate from power and motor wires.

Figure 3-2 Recommended System Grounding (1 phase) for CE

L

AC Main

Supply N

SafetyEarth

Ground

Driven Earth

Ground Rod

(Plant Ground)

All shields

			Microstepper Driver		Note:
					Wiring shown for clarity of
			L N	GND A+A–B+B–	grounding method only. Not
					representative of actual
					terminal block location.
						Linear
	Route	all power				Motor
	wires	together in
	conduit or cable.				Motor
					GND
Enclosure Backplane (see Section 8)

Note: Use shielded cable for driver signal wires. Route driver signal wires in conduit. These wires must be kept separate from power and motor wires.

3-2Receiving & Installation MN1853