ElmoMC ExtrIQ Gold Line Servo Drives-Gold Panther User Manual
Page 27
Gold Panther Installation Guide
MAN-G-PANIG-EC (Ver. 1.000)
|Main Power, Motor Power and Auxiliary Power
27
The DC power for the Gold Panther is delivered from a separated rectifying unit (supplied by the
user). Elmo recommends using the Tambourine rectifier specifically designed for use with Elmo
drives which offers a range of versatile options.
The following sections contain topology recommendations for implementing three-phase and
single-phase supply chains.
The power stage of the Gold Panther is fully isolated from the other sections of the Gold Panther,
such as the control-stage and the heat-sink. This isolation allows the user to connect the common of
the control section to the PE, a connection which significantly contributes to proper functionality,
safety and EMI immunity, leading to better performance of the Gold Panther.
In addition, this isolation simplifies the requirements of the DC power supply that is used to power
the DC bus of the Gold Panther, by allowing it to operate with a non-isolated DC power source (a
direct-to-mains connection) which eliminates the need for a bulky and expensive isolation
transformer.
However, as well as operating from a non-isolated/direct-to-mains DC power supply, the Gold
Panther can also operate from an isolated power supply or batteries.
When rectifying an AC voltage source, the AC voltage level must be limited to 270 VAC so as not to
exceed the maximum 390 VDC in the case of a 400 VDC drive, or 528 VAC so as not to exceed the
maximum 747 VDC in the case of an 800 VDC drive.
5.1.2.1.
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.
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.