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NEW PCPPS V3 is now surface mount and has buffered inputs with built-in pullups for easy connection.
It has charge pump circuitry and uses the 12 kHz signal from the parallel port generated by the CNC software to operate a logic control enable line. Any piece of machinery that uses powerful motors can be dangerous if controlled by a computer that can be in an unknown state while being powered up or in a software crash condition. Using this signal output to control the Sleep or Enable lines on the stepper motor boards until software is running correctly. The board uses the 12KHz signal on pin one to feed the charge pump circuit and has a force link override for test purposes. It has it’s own on board 5V regulator for the power supply which has plenty of spare capacity to drive other circuits, sensors, switches etc. The board has a LED that illuminates when the charge pump signal is present. Power to the board can be in the range of 7V minimum to 30V Maximum and can usually taken from the main stepper motor supply rail. The design is fully RoHS compliant anduses surface mount components.
The PCPPS board is no longer available as a kit
Order Code PCPPS £15.50 W2
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