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The Driver SMD73 can supply 2.6A RMS in each phase, and current is automatically regulated to 0.8A when the motor is not receiving step pulses. The Driver controls the motor in half-step mode, which results in 400 steps/rev. SMD73 can handle up to 50 ksteps/sec and a "half-step" current regulation ensures that the current is increased by a factor of 1.4 every second step on each phase, in order to yield maximum motor torque.
The Driver can be powered from an 18 - 28VDC supply. It is equipped with 2 indicators: a green LED indicates that power is on and a red LED indicates an error condition.
For other applications, the Driver is available with step resolutions of
1/1, 1/2, 1/4, 1/5, 1/8 steps/rev., and with selectable motor current.
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The Driver is equipped with an 8-pole connector. 4 terminals are used to connect the motor, 2 are used for the external power supply, and the remaining 2 are used to control the motor via step-pulse and direction signals.
As standard, SMD73 has ½ step and 2.6A RMS phase current. If required, the Driver can be supplied with step resolutions of 1/1, 1/2, 1/4, 1/8 step/rev., and specified motor current. Also available for controlling DC motors.
Step Motor Driver PA0073 can also be configured by JVL to control DC- or step motors at selectable velocity, stand-by/operating current, change of direction, etc. For example, it is possible to control a DC motor so that input 1 selects start/stop and input 2 determines velocity
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