Grounding; Auxiliary Input And Output Power Option Devices - Veikong gpd 515/g5 Startup Manual

1 . 4 . 2 G r o u n d i n g
• The drive must be solidly grounded using the main circuit ground terminal.
• If Drive is installed in a cabinet with other equipment, ground leads for all equipment should be
connected to a common low-impedance ground point within the cabinet.
• The supply neutral should be connected to the ground point within the cabinet.
• Select appropriate ground wire size from Table 1-1.
• Make all ground wires as short as practical.
• NEVER ground the drive in common with welding machines or other high power electrical
equipment.
• Where several drives are used, ground each directly to the ground point (see Figure 1-1). DO
NOT FORM A LOOP WITH THE GROUND LEADS.
• When connecting a motor to the drive's output terminals, include a separate ground wire. Attach
ground wire solidly to motor frame and to drive's ground terminal.
• When using armored or shielded cable for connection between drive and motor, solidly connect
armor or shield to motor frame, and to the drive's ground terminal.
PREFERRED
1 . 4 . 3 A u x i l i a r y I n p u t a n d O u t p u t P o w e r O p t i o n D e v i c e s
A disconnect device (circuit breaker, contactor, disconnect switch, etc.) should NOT be used as a
means of starting and stopping the drive or motor.
A disconnect device can be installed for emergency stop purposes, but when that disconnect
device is opened, there may be loss of electrical braking.
NOT RECOMMENDED
A. Grounding of Three Drives
CORRECT
B. Grounding of Drive & Vector Control Motor (VCM)
Figure 1-1. Grounding
NOT RECOMMENDED
1-11
NOT
ACCEPTABLE