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Apply a stable voltage into the Command Input. For digital input systems, send a 16384io

output word to the digital input option, and set up W4 for DI non-inverting. For analog

systems use the -VREF signal as a command input by connecting W7.3 as a single ended

non-inverting input on W4. For both types, measure this voltage at W4 and record it. Call

tiiis VINl.

Measure the voltage at Ul

or the input side of R30 and record it. Call it VIN2

6. The Slew Rate Limiter Voltage Gain, SRLVG, is:

SRLVG = VIN2 / VINl

Use

R51

to adjust this ratio to the desired level, usually 1:1.

8. Tum off the power.

9. Disconnect TP4 from ground.

This adjustment can also be performed in a closed-loop manner. If the servo loop is already

tuned up, and it is desired to adjust the fieldsize of the system slightiy, follow the procedure

below.

Set up the system by following steps

- 7 in section

4.2.

above.

Input a signal that corresponds to a calculated amount of beam motion. Refer to sections

3.6.3 and 3.6.5 for more information on calculating the Command Input Scale Factor. This

input signal can be a DC voltage or a dynamic pattem. For best results, the dynamic pattem

should not be moving so quickly that the pattem starts to attenuate or "shrink in size".

Adjust

R51

so that the desired amount of beam motion is obtained.

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Axis 670 Bedienerhandbuch Seite 32