Baldor VS1MD instruction manual RFI Filter Grounding, Grounding Procedure, Grounding Guidelines

Shield Termination - SHLD

Either of the safety ground terminals provides a grounding point for the motor cable shield. The motor cable shield connected to one of these terminals (drive end) should also be connected to the motor frame (motor end). Use a shield terminating or EMI clamp to connect the shield to the safety ground terminal.

When shielded cable is used for control and signal wiring, the shield should be grounded at the source end only, not at the drive end.

4.1.1 RFI Filter Grounding

Using drives with RFI filters may result in relatively high ground leakage currents. Therefore, the filter must only be used in installations with grounded AC supply systems and be permanently installed and solidly grounded (bonded) to the building power distribution ground.

Ensure that the incoming supply neutral is solidly connected (bonded) to the same building power distribution ground. Grounding must not rely on flexible cables and should not include any form of plug or socket that would permit inadvertent disconnection. Some local codes may require redundant ground connections. The integrity of all connections should be periodically checked.

4.1.2 Grounding Procedure

Step 1. Remove the front cover.

Step 2. Connect the Grounding wire to the ground terminal through the opening for ground terminal. Enter the screw driver from vertical to the terminal and secure the screw tightly.

4.1.3 Grounding Guidelines

Table 4.1 – Grounding Guidelines

		200V Class			400V Class
Inverter	Wire	Terminal	Grounding	Wire	Terminal	Grounding
capacity	size	screw	method	size	screw	method
0.5 HP	3.5 mm2	M3	Type 3	2 mm2	M3	Special Type 3
1.0 HP	3.5 mm2	M3		2 mm2	M3
2.0 HP	3.5 mm2	M3		2 mm2	M3
3.0 HP	3.5 mm2	M3		2 mm2	M3
7.5 HP	5.5 mm2	M4		3.5 mm2	M4

4-2 VS1MD AC Drive User Manual