Combinations Of Units - Siemens SIMOVERT MASTERDRIVES Betriebsanleitung

02.2008
WARNING
WARNING
7.4

Combinations of units

WARNING
NOTICE
Siemens AG 6SE7087-6JP60
SIMOVERT MASTERDRIVES
gL fuses only provide reliable protection for the cables, but not the
semiconductors.
It is not imperative to operate the units via a main contactor.
If the units are connected to the supply system without a main contactor
which can interrupt the incoming supply in the event of a fault, the unit
may suffer further damage.
For simple configuration of multi-axis drives, one or several Compact
PLUS DC/AC inverters can be fed from the DC link of the Compact
PLUS AC/AC converters.
The total drive power of the inverters must not exceed the drive power
of the converter. A simultaneity factor of 0.8 applies here.
For example, a 4 kW inverter and a 1.5 kW inverter can be connected
to a converter with a drive power of 5.5 kW by a common DC bus.
The line-side components are rated according to the total power of all
converters and inverters. In the case of a multi-axis drive from one
5.5 kW converter, one 4 kW inverter and one 1.5 kW inverter, the line-
side components must be rated for an 11 kW converter. If the total
power does not exactly equal that of one converter, then the line-side
components must be dimensioned according to the next-higher
converter power.
If more than two inverters are connected to the DC bus of a converter,
an external DC 24 V supply must be provided for these inverters. Only
one further inverter can be connected to the 24 V voltage output in the
case of a converter with a housing width of 45 mm.
To support the DC link circuit, a capacitor module can be connected to
a Compact PLUS AC/AC converter.
Operating Instructions
Connecting-up
7-23