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Pulse/Pulse and Pulse/Direction Modes
Pulses on the CW pulse line make the motor rotate CW and pulses on the CCW pulse input line
make the motor rotate CCW as viewed from the shaft end of the motor.
To set up the pulses per revolution, select the drive parameters screen using PCX and change the
default setting of 4000 steps/revolution to your desired configuration. The mode select switches
can be set to operate the drive in the pulse/direction mode. In this mode, the CW pulse input line
becomes the pulse input and the CCW pulse line becomes the direction input. If there is no
current flowing in the direction input, the pulse input line is interpreted as CCW direction.
In either pulse mode, once motion is initiated with these inputs, motion in the opposite directions
can not be achieved until motion in the initiated direction has been stopped as a result of
stopping the pulses. Attempts to defeat this may cause erroneous and unpredictable operation.
In a pulse train application, the pulse trains are fed into the CW and CCW inputs on the
command connector. The inputs are optically isolated and can be used for sinking or sourcing
current; this requires two connections per input. In either case (sinking or sourcing), the noise
immunity is improved when the normal state of the input does not cause current to flow in the
optical coupler. Current should only flow when a motion pulse is applied by the external pulse
generator, and each pulse must be at least between 0.5 to 1.5 micro seconds and b5 and
+15 VDC to be accepted as a valid pulse.
Figure 46
Command Connector Circuit
NOTE:
CW rotation of the motor is established with the operator facing the shaft end of the
motor.
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