Download Motion Control Frequency Inverter (DC

08.2008
7.3
Connecting-up
Conductor cross-sections
Protective
conductor
If the unit is mounted conductively on a grounded mounting surface, the
cross section of the protective conductor can be the same as that of the
phase conductor.
WARNING
In the case of insulated installation on units up to 90 mm wide, a
second protective conductor (with the same cross section as the line
conductor) must be connected to ground (M4 threaded bolts on the top
of the unit next to the mains terminal).
Motor cable
For cross-sections and leads, see catalog Motion Control SIMOVERT
MASTERDRIVES MC or IEC 60 204-1: 1997/1998.
7.4
Combinations of units
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.
WARNING
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 lineside 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.
NOTICE
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.
Siemens AG
6SE7087-6KP50
SIMOVERT MASTERDRIVES
Operating Instructions
7-19