Siemens SINAMICS S120, Руководство по эксплуатации функций

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Servo control
4.15 Vdc control
Drive functions
168
Function Manual, 11/2017, 6SL3097-4AB00-0BP5
V
dc controller
monitoring
In the event of a power failure, the Line Module can no longer supply the DC link voltage,
particularly if the Motor Modules in the DC link line-up are drawing active power. To ensure
that the DC link voltage is not burdened with uncritical drives in the event of a power failure,
these drives can be switched off by a fault (F30003) with a parameterizable voltage
threshold (p1248). This is carried out by activating the V
dc_min
monitoring function (p1240 = 5,
6).
In the event of a power failure, the DC link voltage can increase until it reaches the shutdown
threshold when drives are decelerated. To ensure that the DC link voltage is not loaded with
uncritical drives in the event of a power failure, these drives can be switched off with fault
F30002 with a parameterizable voltage threshold in p1244. This is done by activating the
V
dc_max
monitoring (p1240 = 4, 6).
Function diagrams (see SINAMICS S120/S150 List Manual)
•
5300
Servo control - V/f control for diagnostics
•
5650
Servo control - Vdc_max controller and Vdc_min controller
Overview of important parameters (see SINAMICS S120/S150 List Manual)
•
r0056.14
CO/BO: Status word, closed-loop control: Vdc_max controller active
•
r0056.15
CO/BO: Status word, closed-loop control: Vdc_min controller active
•
p1240[0...n]
Vdc controller or Vdc monitoring configuration
•
p1244[0...n]
Upper DC link voltage threshold
•
p1248[0...n]
Lower DC link voltage threshold
•
p1250[0...n]
Vdc controller proportional gain