ElmoMC Gold Line Digital Servo Drives-Gold DC Trombone User Manual
Page 31
Gold DC Trombone Installation Guide
MAN-G-DCTROIG-EC (Ver. 1.900)
||Main Power
31
6.3.1
Direct-to-Mains Power Source (Non-Isolated Rectifier)
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 DC input cable.
2.
A 3-wire shielded cable should be used:
a.
Connect the main input cable to the VP+ and VN- 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 DC
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:
•
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.