July 2010 20 – 325
Single and double-
speed control loops
With CC 424 (B) the OEM has the possibility of installing single-speed and double-speed
control loops.
Single-speed control loops are used for, e.g.:
Spindles
Conventional axes
Double-speed control loops are used for, e.g.:
Linear motors
Torque motors
High-frequency spindles
“Axes that are difficult to control”
Double speed control loops operate with shorter controller cycle times.
If double-speed control loops are configured on a CC 424 (B), several PWM outputs or
motor outputs are not active, since in this case the DSP (digital signal processor) only requires
one double-speed channel instead of two single speed channels.
Power supply
modules, power
stages and motors
Different servicing
Assignment in the
machine parameters
Supply modules Power modules Motors
Machine parameters MP 2198.x MP 2100.x MP 2200.x
The service on the CC 424 and CC 422 (B) is different.
Ensure to use the correct instructions!
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