Feedback and Interface Connectors
What will be the mechanical count revolution for a resolver with 2 pole pairs (on the resolver) and 13 bit resolution?
2 x 213
= 16,384
Which challenge does the drive face when it has to deal with an analog sensor?
Matching phase offset properly, amplitude matching and lissajous creation of the analog input.
Does the resolver feedback require an auto phasing method?
No in the case of single pole resolver, it is absolute. In other cases it does require auto phasing.
What is the meaning of emulation in our drives?
When an analog signal is channeled into the main feedback, it is emulated to the auxiliary feedback output. This can be converted to a digital signal.
How is it possible to output a digital encoder signal (from the main to the aux) with the Whistle drive?
You must use a line driver to buffer out the signal externally to the WHI
What is the difference between differential and single ended inputs?
Differential is between a ± valve (i.e. ±5 V) and single end is a + valve with respect to zero (i.e. +5 V to 0 V). Differential is better for noise immunity.
What is the difference between differential and single ended inputs?
Differential is between a ± valve (i.e. ±5 V) and single end is a + valve with respect to zero (i.e. +5 V to 0 V). Differential is better for noise immunity.
Why can the Tacho feedback not close the position servo loop?
It is a generator based on the voltage from the motor. It drifts around 0.
Is it possible to close a position loop with a potentiometer?
Yes
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