Speed Feedback - Zapi COMBIACX User Manual

3.5 Speed feedback

The motor control is based upon the motor speed feedback (sensored software).
The speed transducer is an incremental encoder, with two phases shifted at 90°.
The encoder can be of different types :
- power supply: +12V / +5V;
- electric output: open collector ( NPN ), push-pull.
COMBIACX / ACEX can also operate without encoder, this using a sensorless
control.
This solution has to be discussed with Zapi technicians.
4
Note (1): The encoder resolution and the motor poles pair (the controller can
handle), is specified in the home page display of the handset showing following
headline:
ADXZ2A
That means:
ADXZ= COMBIACX Zapi controller
2 = motor's poles pair number
A = 32 pulses/rev encoder
The encoder resolution is given by the second-last letter in the following list:
A = 32 pulses/rev
K = 48 pulses/rev
B = 64 pulses/rev
C = 80 pulses/rev
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