Axis 670 Manual de Instruções descarregar pdf (Página 24)

11.

For digital signals, input a 30 Hz square wave that spans about 5% ofthe field. For analog

inputs, put in a square wave of about IV p-p at about 30Hz. For very large scanner/mirror

systems, 30Hz may be too fast. For those systems, set the

frequency

to ~5Hz.

12.

The scanner should immediately start moving in response to this input. Check the position

out signal or look at the scanner itself and observe that it responds appropriately to the input

signal.

13.

Gradually, increase the amplitude ofthe input signal until the Command Input waveform has

almost reached ~+/-10 volts. For systems that have an input and output scale factor = 0.5

volts/° mechanical, the scanner will just go into shutdown at this point. The amplitude will

have to be tumed down slightly in order to recover. Don't continuously test this over position

shutdown feature because the scanner is stiessed unnecessarily.

14.

Now, gradually tum up the

frequency

ofthe input waveform until the desired

frequency

has

been reached or the output waveform begins attenuating, whichever comes first. The

maximum coil temperature may be reached before this point. To recover, tum the frequency

down and possibly the amplitude ofthe input signal, in that order.

15.

appropriate,

enter an offset signal into the "Offset In" input. The output waveform should

now

be the algebraic sum of both the normal and offset inputs.

That is

it!

If the 670 system has performed all ofthe above functions, it is functioning properly.

The scanner can be made to follow any input waveform as long as the maximum

amplitude/maximum speed limitations are not exceeded.

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Axis 670 Manual de Instruções Página 24