Configuration
2.4 Procedure when engineering
1FT7 Synchronous Motors
48 Configuration Manual, (PFT7S) 01/2009, 6SN1197-0AD13-0BP2
Load duty cycles with varying on period
As well as continuous duty (S1), standard intermittent duty types (S3) are also defined for
load duty cycles with varying on periods. This involves operation that comprises a sequence
of similar load cycles, each of which comprises a time with constant load and an off period.
Figure 2-5 S3 duty (intermittent operation without influencing starting)
Fixed variables are usually used for the relative on period:
● S3 – 60%
● S3 – 40%
● S3 – 25%
The corresponding motor characteristics are provided for these specifications. The load
torque must lie below the corresponding thermal limiting characteristic curve of the motor. An
overload must be taken into consideration for load duty cycles with varying on periods.
To Next Page
Loading...
Need help?
General