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Page - 8/72 ADEZP0DC - AC-2 FLASH INVERTER - User Manual

The two graphs show the output voltage from a non-calibrated potentiometer with

respect to the mechanical “zero” of the control lever. MI and MA indicate the point

where the direction switches close. 0 represents the mechanical zero of the

rotation.

The Left Hand graph shows the relationship of the motor voltage without signal

acquisition being made. The Right Hand Graph shows the same relationship after

signal acquisition of the potentiometer.

3.3 Other analog control unit

1) Input E8 is an analog input, whose typical application is for proportional

braking. It should be in a 3 wire configuration. Potentiometer value should be

in the 0.5-10 kΩ range. Generally, the load should be in the 1.5 mA to 30 mA

range.

The CPOTB (E8) signal range is from 0 to 10 V.

2) Connections F6 (PTHERM) and F12 (NTHERM) are used for a motor thermal

sensor. It can be digital (on/off sensor, normally closed) or analog. See also

chapter 8.4 for more explanation.

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 or PNP), push-pull, line driver

- standard (A and B) or differential

)B B, ,A(A,

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:

AC2T2D F ZP1.13

That means:

AC2T= AC-2 traction controller

(AC2P= AC-2 pump controller)

2 = motor’s poles pair number

D = 128 pulses/rev encoder

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 71 72

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Zapi AC-2 Bedienungsanleitung Seite 8