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| META TOPICPARENT |
name="ActiveMeasurementFacility" |
Starting and Calibrating ACME |
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These procedures are not guaranteed to work, but they have done so in the past. Lubricating the parts (especially the rotation stage) and removing dust every now and again should help too. |
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> | If the gantry rotation has trouble with the auto-calibration, it may do a full revolution when you power up (it usually rotates by about pi/2). The triclops cables will need to be unplugged in this case. |
| | stage2 not homed |
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< | This culprit in this case is the gantry z-axis. There is an impedance sensor on it to detect when it has moved all the to the top of its travel range (see attached image). There is a yellow light in the sensor (where the wire enters) which comes on when the marker on the drive belt is sufficiently close to the tip. This should not be on while the gantry is sitting ilde waiting for you to issue the acmehome command. Loosen the nut and tilt the tip of the sensor as far upwards as you can. When you fasten the nut again, the light should go off. Try acmehome again. |
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> | This culprit in this case is the gantry z-axis. There is an impedance sensor on it to detect when it has moved all the way to the top of its travel range (see attached image). There is a yellow light in the sensor (where the wire enters) which comes on when the marker on the drive belt is sufficiently close to the tip. This should not be on while the gantry is sitting ilde waiting for you to issue the acmehome command. Loosen the nut and tilt the tip of the sensor as far upwards as you can. When you fasten the nut again, the light should go off. Try acmehome again. |
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stage3 not homed
This is the linear stage. Power cycling kiewa seems to do the trick. |
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