Zapi AC-2 User Manual download pdf (Page 9)

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3.4 Speed feedback

The motor control is based upon the motor speed feedback. The speed

transducer is an incremental encoder, with two phases shifted at 90°. The

encoder can be of different types:

- power supply: +5 V or +12 V.

- electric output: open collector ( NPN), push-pull

- standard (A and B) output.

For more details about encoder installation see also chapter 4.2.5.

4 Note: 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:

AE2T2B ZP1.13

That means:

AE2T= ACE-2 traction controller

(AE2P= ACE-2 pump controller)

2 = motor’s poles pair number

B = 64 pulses/rev encoder

The encoder resolution is given by the last letter in the following list:

A = 32 pulses/rev

B = 64 pulses/rev

C = 80 pulses/rev

D = 128 pulses/rev

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 82 83

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Zapi AC-2 User Manual Page 9