MINISAX II DRIVER DOWNLOAD

The same techniques maybe used for other command waveforms as well. Monitor the position signal from the Test Interface Board on an oscilloscope. The position-proportional term allows the use of high integrator gains and desensitizes the servo loop to small changes in the command size or motor parameters. If a smaller scan angle is desired, it may be possible to adjust the coarse gain setting to one position lower than recommended in Table 6. A matched set typically consists of galvanometer motor, mirror load, electronic driver board and interface cable. High bandwidth is achieved when the servo driver is adjusted to a small step of approximately 0.

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Turn the power supply off immediately. Do not attempt tuning without monitoring the position signal on an oscilloscope.

MiniSAX II Driver User’s Manual Pages 1 – 33 – Text Version | FlipHTML5

In order to provide the greatest dynamic range, the set point should be as low aspractically possible. Up to 15 turns may be required to assure the gains are minimized.

The gain, offset and notch adjustments must be complete before final tuning. Gain and offset adjustment With the servo power off, verify that the coarse gain jumper is set to the correct position as shown in Table 6. Some applications may require a structured command. Turn the error-proportional gain fully CCW. The Scanner Position – output must not be tied to ground.

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Input a waveform that represents the largest step or greatest acceleration the galvo will be commanded to. The ability of the TCM to regulate scanner motor temperature is limited by the amount mminisax power thatcan be provided.

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While viewing the amplitude of the position signal, gradually increase the frequency for digital generator, use Hz increments until the first peak amplitude is found. Analog Optical Scanners that are tuned for vector and small-step applications may require a structured command acceleration limited to maintain stability over large steps.

Increasing the integrator gain causes a faster response. If the incorrect notch filter module is used, it may not be possible to eliminate the oscillation.

This is illustrated in Figure 4. Servo response to a step commandcan be characterized as overdamped, critically damped, orunderdamped See Figure 5. The function of each of these parameters is outlined in Table 7.

The MiniSAX II was engineered with system designers in mind, incorporating a simple yet comprehensive and flexible interface structure. Increase the command voltage slightly so the position signal amplitude reads exactly 6Vpp. In this case, damage to the rotor assembly is possible.

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In this case, large steps may require command structuring. Gain and offset adjustmentB. The following tuning procedure is used when maximum accuracy is required.

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G-series scanner motors do not have a mechanical stop. Increase the integrator and position-proportional gains alternately, while adjusting velocity to maintain a critically damped response.

These adjustments are made at the factory in cases where a complete analog optical scanner scanner motor, driver and mirror is ordered, or if the factory is supplied with a test load from the customer. The position-proportional and velocity are used to maintain ,inisax critically damped response.

Damping Velocity The damping term adds phase to the servo loop and is used to maintain loop stability. CommandThe small-signal, accuracy-optimized tune will typically Underdampedgive a critically damped response for steps up to 10mR and Critically Dampedeither an overdamped or underdamped response for larger Overdampedsteps, depending upon their size.

This current level is sufficient to cause damage to both the MiniSAX II driver and the scanner motor if proper heatsinking is not provided. If no discrepancies are reported, General Scanning shall assume the shipment was delivered complete and defect free. The amount of heater power available is a function of the supply voltage available to the TCM. miniszx

Failure to do so may result in the scanner motor overheating.