PD42-1070 Hardware Manual • Hardware Version V1.00 | Document Revision V1.10 • 2018-July-03
15 / 25
Figure 11: Inputs with common anode input with 3.3V to 5V
The typical voltage at COMM input is 5V. Nevertheless, 3.3V or voltages higher than 5V can also be used as
long as the current is through the optocouplers’ emitter is between 5mA to 20mA. For 3.3V operation the
controller must be carefully selected with respect to its I/O ports, its actual output voltage, and the series
resistor of the I/O ports. The user must make sure that the current through the optocouplers’ emitter is
between 5mA to 20mA.
Note
Step pulse width
Width of the step pulses should be between 2µs and 4µs, for maximum step
frequency.
With a larger step pulse width, for example 50% duty cycle coming from a fre-
quency generator, the maximum input frequency will be lower at ca. 9kHz..
©2018 TRINAMIC Motion Control GmbH & Co. KG, Hamburg, Germany
Terms of delivery and rights to technical change reserved.
Download newest version at
www.trinamic.com
