Technology Module TM StepDrive 1x24..48V/5A
MA 1303-A007 EN
66
8.2.4 Free Run with Variable Velocity
Description of the function
In this mode of operation, the frequency is specified at which the pulses (steps) are to be
output. If the frequency is changed, the pulses are output with the new frequency after an
acceleration or deceleration phase. The output is continuous until the traversing job is
stopped or the travel range of a linear axis is exceeded.
Fig. 18: Frequency mode
Traversing job for frequency mode
The traversing job contains the following information:
Nominal frequency
Direction setting by the sign of the nominal frequency (positive: forward)
Mode of operation = 4 for frequency mode
i
The TM StepDrive checks the preset frequency for limit values (minimum -250.0
kHz and m250.0 kHz).
The specified frequency is approached with the parameterised acceleration and
deceleration. The lowest adjustable frequency is 1 Hz.
The endless output of the frequency is terminated at the following events:
the limits of the parameterised travel range are reached (if a linear axis is pa-
rameterised)
Other cancel conditions for traversing jobs (see chapter 8.3).
