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Functions
14.10 Closed-loop drive control
Description of function
The following settings are available to select for motor control with parameter p0502.
Table 14-71
0
1
2
5
6
474
Setting of technological application in Dynamic Drive Control
Standard drive, e.g. pumps and fans •
Dynamic starting or reversing
Encoderless control down to f = 0
(passive loads)
Starting with high break loose tor‐
que
High load inertia
Default setting for a synchronous motor with or without
speed encoder
•
Default setting for an induction motor without encoder
•
Recommended setting for applications with short ramp-
up and ramp-down times of less than 10 s
•
Starting from standstill with closed-loop speed control
Prerequisite:
The speed setpoint at the ramp-function generator input
is greater than the switchover speed p1755
•
Setting for an induction motor without encoder
•
Speed-controlled operation of induction motors at low
speeds
•
Speed-controlled operation of reluctance motors with
pulse technique (license required)
•
A passive load cannot accelerate the current-free motor.
Examples are pumps and fans, but not hoisting gear
•
Setting for all motor types without encoder
•
For speed-controlled operation at low speeds, the cur‐
rent is raised via p1610.
•
A break loose torque is a high load in the lower speed
range
•
Increased default setting of the static torque setpoint
(p1610)
•
Setting for drives with high power and a total moment of
inertia at least 5 times greater than the motor moment of
inertia
•
Increased preset for speed actual value smoothing
•
Optimized speed controller preset
Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB
SINAMICS G220 converter
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