femi
Der Übersicht halber habe ich hier die schon im Jänner erfolgten Tests mit den Ergebnissen noch einmal zusammengefasst:
For the sake of clarity, I have summarized the tests that were carried out in January with the results:
Das wäre mein Favorit unter den Verdächtigen.
That would be my favorite suspect.
For the sake of clarity, I have summarized the tests that were carried out in January with the results:
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Original von femi The motor runs extremely slowly, which is not surprising at 7.7 V. In "normal operation" it was only for a very short time that no reasonable voltage measurement was possible. The relays switch normally. |
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Original von Dreambox1959 if the engine runs with the test program (slowly because it is at low speed) and only a few milliseconds with the normal program it is a problem of pulses not received (opto coupler or 4094) with the normal program you should see the message AZIMUTH ACTUATOR PB ??? check if the +24v arrives at terminal 13 of the motor (otherwise pulses not active) the grounds must be connected to each other: 11-14-8 (otherwise pulses not active) https://www.satclub-thueringen.de/images...letypes/jpg.gif https://www.satclub-thueringen.de/images...letypes/jpg.gif |
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Original von femi The 24V are on pin 6 of the posi = pin 13 of the rotor. They come straight from the power supply. > in the normal program you should see the message AZIMUTH ACTUATOR PB? Yes, also with ELEVATION What irritates me is that I don't get a voltage reading on 18/17 and 16/15. Here 24V should go to the plug or motor. I only see "V --.---" |
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Original von Dreambox1959 The problem is that the impulses no longer reach the positioner, hence the actuator pb messages. -1 by disconnecting the two rear connectors you should have 24V on terminals 1-2 4-5 -2 the fuse in the motor may have blown F3 |
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Original von femi All glass tube fuses in the rotor were tested right at the start of the problem and are fine. 1-2 and 4-5 only show --.--- when I press the E/W keys. Without pressing a button, the display is 0.00 with small deviations. On 5-6 it is 23,998 V. |
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Original von Dreambox1959 If the motors don't move continuously then the problem is in the PWM board. |
Das wäre mein Favorit unter den Verdächtigen.
That would be my favorite suspect.