1 direct-to-mains power source (non-isolated), 1 three-phase direct-to-mains connection topology – ElmoMC Gold Line Digital Servo Drives-Gold Bassoon User Manual
Page 28
Gold Bassoon Installation Guide
MAN-G-BASIG-EC (Ver. 1.002)
|Main Power
28
6.3.1 Direct-to-Mains Power Source (Non-Isolated)
This section relates to the configuration of the drive, which is connected directly to the mains.
To connect the non-isolated AC power supply:
1.
For best noise immunity, a shielded (not twisted) cable is recommended (not mandatory) for
the AC input cable.
2.
A 4-wire shielded cable should be used:
a.
Connect the 3-phase leads of the main input cable to the AC1, AC2 and AC3 terminals of the
main input connector.
b.
For safety requirements, the green/yellow-wire must be connected to the protective earth
(PE terminal). Connect the Protective Earth wire to the PE terminal on the main AC
connector.
c.
For better EMI performance, the shield should be connected to Protective Earth (PE).
3.
The gauge of the cable strands is determined by the actual current of the drive.
Caution For all the following Topologies:
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.
6.3.1.1
Three-Phase Direct-to-Mains Connection Topology
Figure 12: Non-Isolated Three-Phase Source - Connection Topology