Main power – ElmoMC Gold Line Digital Servo Drives-Gold Solo Trombone User Manual
Page 47
Gold Solo Trombone Installation Guide
Installation
MAN-G-SOLTROIG (Ver. 1.3)
47
4.7.2.
Main Power
Pin
Function
Cable
PE
Protective Earth
DC Power
VN-
DC Negative Power input
DC Power
VP+
DC Positive Power input
DC Power
Table 14: Connectors for Main Power
The DC power for the Gold Solo Trombone is delivered from a separated rectifying unit
(supplied by the user). The following sections contain topology recommendations for
implementing three-phase and a single-phase supply chains.
The power stage of the Gold Solo Trombone is fully isolated from the other sections of the Gold
Solo Trombone, 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 Solo Trombone.
In addition, this isolation simplifies the requirements of the DC power supply that is used to
power the DC bus of the Gold Solo Trombone, 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
Solo Trombone 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.