Operating
Load for
Typical applications
Load cycle
cycle
converter
DC I
I
DC I
continuous (I
dN
)
pumps, fans
DC II
I
DC II
for 15 min and
extruders, conveyor belts
1,5 * I
DC II
for 60 s
DC III *
I
DC III
for 15 min and
extruders, conveyor belts
1,5 * I
DC III
for 120 s
DC IV *
I
DC IV
for 15 min and
2 * I
DC IV
for 10 s
100%
150% 100%
150%
100%
200% 100%
15 min
15 min
15 min
If the driven machines load cycle does not
correspond to one of the examples listed, you
can determine the necessary power converter
using the
DCSize
software program.
This program can be run under Microsoft
®
Win-
dows, and enables you to dimension the motor
and the power converter, taking types of load
(load cycle), ambient temperature, site elevation,
etc. into account. The design result will be
presented in tables, charts, and can be printed out
as well.
To facilitate the start-up procedure as much as
possible, every power converter has been pro-
vided with a current measuring feature, which
can be adjusted to the high current required by
means of software parameters.
Fig. 2.3/1: Entry mask on the computer screen for the dimensioning program DCSize.
Microsoft is a registered trademark. Windows is a designation of the Microsoft Corporation.
Types of load
* Load cycle is not identical to the menu item
Duty cycle in the DCSize program !
The example load cycle show one case of DC standard
Table 2.3/2: Definition of the load cycles
II F 2-7
