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Product manualVRDM
Circuit Types for
5-phase stepping
motors
The 5H-Switch Circuit for 5-Phase Stepping Motors
.
The BERGER LAHR power drives
operate in the bipolar mode, using
the so-called H-bridge, one for
each phase. We control the
current flow from the start to the
end of the winding or from the end
to the start of the winding, or
switch off the current through the
winding (see schematic diagram).
This circuit arrangement allows the
activation of the different phase
combinations and thus the
realization of full and half step.
This operation yields 500 or 1 ,000
steps per revolution. In full step
operation 4 phases are activated
for each step, whereas in half step
operation 4 or 5 phases are
switched alternatively from step to
step. The sequence of activated
phase combinations (switching
sequence) is shown in the
schematic diagram “Switching
sequence in full- and half-step
operation”.
Switching sequence for ful/- and half-step
.
In addition to the full- and half-step
operation, the so-called microstep
operation can also be realized.
With the DIVI-STEP Control Drive
from BERGER LAHR the
individual steps are subdivided into
10 micro-steps. In this case, the
current flowing through the
windings is not only reversed, but
also varied in amplitude, giving a
resolution of 10,000 steps per
revolution.