A three-phase direct-to-mains connection topology – ElmoMC ExtrIQ Gold Line Servo Drives-Gold Tiger User Manual
Page 31
Gold Tiger Installation Guide
MAN-G-TIGIG (Ver. 1.000)
||Main Power, Auxiliary Power
31
6.3.1.1
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.
To connect the non-isolated DC power supply:
1.
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.
2.
Connect both ends of the cable shield to the closest PE connections.
3.
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.
6.3.1.1.a
Three-Phase Direct-to-Mains Connection Topology
Figure 14: 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.