ABB ACS550-01-08A8-4+B055 [5/5] Reforming instructions for r1 r4 oint and sint boards

ABB Drives

CAPACITOR REFORMING

Inspection Instruction

3AFE 6873 5190

00522808_G.DOC

Dept.

Project

Page

Capacitor reforming is based on DC power supply, which is connected to the board X8

and X10 connectors. X8 is UDC+ and X10 is UDC-. The power supply current charges

drive capacitors. If the power supply cannot limit the current, the voltage is increased

gradually (with e.g. 100V steps). The maximum recommended reforming current is

x

. See the reforming time in

figure 1.