Bholanath BH-SMART-2A, User Manual

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5
. CALCULATION OF PULSE FREQUENCY :- F = (RPM X MICRO STEP)/60
If Need 60 RPM at 400 Micro Step (Half Step, Default Setting)
Then Frequency = (60X400) /60
= 400 Hz
TABLE
:-(a)Frequency With Different RPM At 400 Micro Step
RPM
60 120 180 240 300 360 420 480 540
FREQUENCY(Hz) 400 800 1200 1600 2000 2400 2800 3200 3600
TABLE
:-(b) Frequency With Different RPM At 800 Micro Step
If Need 60 RPM at 800 Micro step
Then Frequency = (60X800) /60
= 800 Hz
RPM 60 120 180 240 300 360 420 480 540
FREQUENCY(Hz) 800 1600 2400 3200 4000 4800 5600 6400 7200
6. Connecting the Motor
Connections to 4-lead Motors
4 lead motors are the least flexible but easiest to wire. Speed and torque will depend on winding inductance
.
Connections to 6-lead Motors
Like 8 lead stepping motors, 6 lead motors have two configurations available for high speed or high torque
operation. The higher speed configuration, or half coil, is so described because it uses one half of the motor
’ s
inductor windings. The higher torque configuration, or full coil, uses the full windings of the phases.
Half Coil Configurations
As previously stated, the half coil configuration uses 50% of the motor phase windings. This gives lower
inductance, hence, lower torque output. Like the parallel connection of 8 lead motor, the torque output will
be more stable at higher speeds. This configuration is also referred to as half chopper.
6-lead motor half coil (higher speed) connections
FOR HALF COIL CONNECTION
CONNECT
(A+)-A Com & (B+)-B Com/
A Com-(A-) & B Com-(B-)