Charging Circuit; Motor Connection - ABB ACS800 Hardware Manual

Charging circuit

Installing a switch fuse between the inverter module(s) and the DC link necessitates
a charging circuit. The charging circuit contains two resistors per inverter module
and a switch fuse controller (type ASFC-01C). The resistors and the controller are
included in the switch fuse kits.
The minimum wire sizes to be used in the charging circuit are as follows:
• DC bus to fuses: 2.5 mm
• ASFC to ground: 2.5 mm
• From fuses/ASFC to charging resistors: 1.5 mm
• Switch fuse auxiliary contact/solenoid wiring; auxiliary voltage supply to ASFC:
2
0.75 mm (AWG 18).
The ASFC is also to be connected to the AINT board of the inverter module(s) by a
fibre optic link. See this chapter under

Motor connection

The motor connection of frame R8i inverter modules is located at the back of the
module so that a quick connector can be used, enabling easy extraction of the
module from the cabinet for maintenance. The chassis socket – available separately
with different mounting parts – is attached to the rear part of the cubicle (see the
examples in the chapter
example.
Chassis socket with
mounting plate
Output busbars
Gland plate
Lower module
guide
2
(AWG 14), double-insulated
2
(AWG 14)
Control
Cabinet construction). The picture below shows a cabling
2
(AWG 14)
connections.
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