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Control System B-3
MN1901
B.1.3 Speed amplifier
Setting
CONFIG
to
_cfVELOCITY
configures the MintDrive
II
as a speed amplifier, as shown in
Figure 56. Here, a speed reference obtained from a specified source (e.g. a Mint program, the
Mint WorkBench Command window, the analog demand input, or Fieldbus) provides targets
for a speed profiler. The profiler generates a speed demand signal that smoothly changes
between successive speed targets. This speed demand signal is fed into the speed controller,
and the remaining system operates as described in section B.1.1.
Speed
controller
Torque
controller
Power stage
+ motor
Torque
demand
PWM
Speed
demand
Speed
profiler
Speed
reference
Measured current
Measured speed
Figure 56 - Control structure in Velocity (
_cfVelocity
) configuration
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