A three phase direct-to-mains connection topology – ElmoMC Gold Line Digital Servo Drives-Gold Solo Trombone User Manual
Page 48
Gold Solo Trombone Installation Guide
Installation
MAN-G-SOLTROIG (Ver. 1.3)
48
4.7.2.1.
Direct-to-Mains Power Source (Non-Isolated Rectifier)
This section relates to the configuration of the power supply and drive, which are connected
directly to the mains.
Notes for connecting the non-isolated DC power supply:
• For best immunity, it is highly recommended to use twisted cables for the DC power supply
cable. A 3-wire shielded cable should be used. The gauge is determined by the actual
current consumption of the motor.
• Connect both ends of the cable shield to the closest PE connections.
• Tie one end to the power supply’s PE terminal, and tie the other end either to the PE pins
of the module/PE terminal of the integration board, or attach it to one of the four
mounting screws of the drive’s heat sink.
4.7.2.1.a Three Phase Direct-to-Mains Connection Topology
Figure 10: Non-Isolated Three-Phase Connection Topology
Caution
:
• Do not connect VN- to PE. In a direct-to-mains connection the VN- must not be
connected to the PE, as this will cause irreparable damage to the system.
• Take care and note that in a direct-to-mains connection the Neutral point is not the most
negative voltage level. It is the mid-point level of the rectified DC bus.