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Manual MCD
+
6 Motor Connection
The following chapter describes how to wire different types of 2-phase stepper motors.
MCD stepper motor power stages may be connected to stepper motors with 0.3 to 9 A
Peak
phase current.
The stepper motor winding resistance should be more than 0.1
Ω
and less than
10
Ω
for full power.
The winding inductivity of one phase should be in the range of 0.5 to 10 mH.
Stepper motors with 8 leads can be connected with the windings wired in parallel (1) or
serial (2).
For 6-lead stepper motors, wiring scheme (3) with serial windings is recommended.
If wiring scheme (3) or (4) cannot be used because of the motor construction, the motor
may be operated with only two of the four windings energized according to wiring scheme
(5).
Warning:
5-lead stepper motors must not be connected to the MCD.
Both 5-lead stepper motor and MCD might be damaged.
Motor time constant
τ:
R
L
=
τ
applies to the electric motor time constant
τ.
The total inductivity L
total
is equal to the winding inductivity in a parallel circuit, because
of interlinked inductivities.
L
ges
=
4 x L applies to a serial circuit.
The result is an equal motor time constant
τ
for a serial and a parallel circuit:
Circuit Serial parallel
Resistance R
total
2 x R
2
R
Inductivity L
total
4 x L L
Motor time constant
τ
R
L x 2
R x 2
L x 4
serial
= = τ
R
L x 2
R/2
L
=
parallel
= τ
MA 2102-A005 GB
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