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JVL Industri Elektronik A/S - User Manual - Integrated Stepper Motors MIS23x, 34x, 43x
12.3.2
Connection of Step Motor
Various types of step motor are available:
1. 2-phase Bipolar (4 connectors)
2. 4-phase Bipolar/Unipolar (8 connectors)
3. 4-phase Unipolar (6 connectors).
Note that Type 3 motors indicated above (Unipolar motors) produce 40% less torque.
This motor type can be used with success but is not recommended if a 4 or 8 wire motor
is available instead. This section will not describe the unipolar type further.
2-phase or 4-phase motors can be connected to the Controllers as follows:
2-phase Motors
(4 wires).
This type of motor can be directly connected to the Controller’s motor terminals.
The Controller current adjustment must not exceed the manufacturer’s specified rated
current for the motor.
4-phase Motors
(8 wires).
This type of motor can be connected to the Driver in one of the following two ways:
1. Serial connection of phases.
2. Parallel connection of phases.
Selection of serial or parallel connection of the motor phases is typically determined by
the speed requirements of the actual system.
If slow speeds are required (typically less than 1 kHz), the motor phases can be connect-
ed in serial. For operation at higher speeds (greater than 1 kHz), the motor phases can
be connected in parallel.
TT2207GB
Maximum
current
settting
Example
motor 4.2A
4.2 x 1.41 =5.9
4.2
1.41
= 3A
4.2A
I x 1.41
I
1.41
Motor
4-phase
parallel
Motor
2-phase
Motor
4-phase
serial
Serial connection of phases:
Parallel connection of phases:
Motor
Torque
Velocity
Current for Serial or
Parallel connection
I = Nominal current per phase in accordance
with manufacturer's specifications
SM
C7
5
SM
C
7
5
B+
A+
A-
B-
Parallel
Serial
I
Summary of Contents for MIS23 Series
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