mhtavallaie
New Member
dear friends
I am trying to build a circuit which can control and drive a Berger Lahr 5 phase stepper motor (RDM 5913/50).
the stepper motor can carry around 2 amps on each winding .
the circuit I have built is very simple and consists of an lm555 to produce a <1khz clock and a 4022 counter which produce 5 pulse sequences on its Q0-Q4 outputs .
these outputs via a uln2004 drive the bases of 5 BU124 transistors to energize the 5 different stepper motor windings.
I am using 12 volts for the circuit and 24-30 volts to enrgise the stepper motor.
on power up although the BU124 bases are energized in sequence the motor does not step up or down and start vibrating.
lowering the clock rate does not help.
could you kindly help/ advise me to locate the fault.
rgds
hadi
I am trying to build a circuit which can control and drive a Berger Lahr 5 phase stepper motor (RDM 5913/50).
the stepper motor can carry around 2 amps on each winding .
the circuit I have built is very simple and consists of an lm555 to produce a <1khz clock and a 4022 counter which produce 5 pulse sequences on its Q0-Q4 outputs .
these outputs via a uln2004 drive the bases of 5 BU124 transistors to energize the 5 different stepper motor windings.
I am using 12 volts for the circuit and 24-30 volts to enrgise the stepper motor.
on power up although the BU124 bases are energized in sequence the motor does not step up or down and start vibrating.
lowering the clock rate does not help.
could you kindly help/ advise me to locate the fault.
rgds
hadi