Siemens SINAMICS G220 - Minimum Speed

14.9.8 Minimum speed
Overview
An example of this is a conventional pump application in which a speci󹪝c delivery rate must be
maintained. Accordingly, the motor speed must not fall below the minimum speed.
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Figure14-62 Setpoint processing in the converter
Description of function
The minimum speed prevents the continuous operation of the motor at speeds less than the
minimum speed.
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Figure14-63 Minimum speed in the extended setpoint channel
Speeds whose absolute value is less than the minimum speed are only possible when the
motor is accelerating or braking.
Parameters
The following list contains the parameters of the "Minimum speed" function.
Number Name Unit
c1051[0...n] Speed limit RFG positive direction of rotation 
c1052[0...n] Speed limit RFG negative direction of rotation 
p1080[0...n] Minimum speed [rpm]
p1083[0...n] Speed limit in positive direction of rotation [rpm]
r1084 Positive speed limit e󹪜ective [rpm]
c1085[0...n] Speed limit in positive direction of rotation 
c1106[0...n] Minimum speed 
r1112 Speed setpoint after minimum limiting [rpm]
r1114 Setpoint after the direction limiting [rpm]
r1119 Ramp-function generator setpoint at the input [rpm]
r1170 Speed controller setpoint sum [rpm]
Functions
14.9Setpoint channel
SINAMICS G220 converter
Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB 451