1 main power, Main power – ElmoMC ExtrIQ Gold Line Servo Drives-Gold Tiger User Manual
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Gold Tiger Installation Guide
MAN-G-TIGIG (Ver. 1.000)
||Main Power, Auxiliary Power
30
6.3.1
Main Power
The DC power for the Gold Tiger is delivered from a separated rectifying unit (supplied by the user).
Elmo recommends using the Elephant 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 a
single-phase supply chains.
The power stage of the Gold Tiger is fully isolated from the other sections of the Gold Tiger, 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 Tiger.
In addition, this isolation simplifies the requirements of the DC power supply that is used to power
the DC bus of the Gold Tiger, 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 Tiger
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.