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Functions
7.3 Run-down
7.3.7
Voltage ramp
Operating principle
With the "voltage ramp" stopping function, the motor voltage is decreased along a linear,
negative voltage ramp until the motor stops.
Application
● Drives that stop abruptly when switched off, causing the transported goods to be
damaged, such as bottling plants.
Diagram
t
... t
1
2
U
rated
Parameters
Parameters
Stopping time
106
Stopping time
Line voltage
Description
The length of the stopping time defines the time within which the motor voltage
is reduced from line voltage to 0 V.
It may take longer for the motor to actually coast down to a standstill.
The parameter value "0" causes the motor to be shut down immediately without
a down ramp.
Factory setting: 10 s
•
Setting range: 0 ... 360 s
•
Increment: 0.1 s
•
SIRIUS 3RW55 soft starter
Manual, 08/2018, A5E35630887002A/RS-AB/002
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