Editing Motor not moving troubleshooting
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==List of reasons== | ==List of reasons== | ||
;Fault state of drive | ;Fault state of drive | ||
− | :Drive suspends all motor control until fault is cleared. If fault occurs again, check parameterization of drive or try adjusting fault tolerance limits to higher. If no stability can be achieved, pay attention to correctness of motor parameters | + | :Drive suspends all motor control until fault is cleared. If fault occurs again, check parameterization of drive or try adjusting fault tolerance limits to higher. If no stability can be achieved, pay attention to correctness of motor parameters [[MPC]], [[FBR]], [[FBI]] and [[FBH]]. In many cases counting direction of encoder is opposite of assumed, so inverting [[FBI]] setting may be needed. All of these settings safe to experiment if motor is shaft unmounted. |
;Incorrect motor settings | ;Incorrect motor settings | ||
:Double check all motor parameters especially on Machine tab of Granity. Also see the previous paragraph ↑↑. | :Double check all motor parameters especially on Machine tab of Granity. Also see the previous paragraph ↑↑. | ||
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:Try increasing motor current limits or try motor without any load | :Try increasing motor current limits or try motor without any load | ||
;No current flow on motor | ;No current flow on motor | ||
− | :Verify that current really flows through motor by doing response tests at Granity Testing page. Tick Torque setpoint & achieved signals to see the target current and actual current of motor. Both curves should stay close to each other. If Torque achieved lags significantly behind, it is sign of insuffucient supply voltage to overcome motor coil resistance or | + | :Verify that current really flows through motor by doing response tests at Granity Testing page. Tick Torque setpoint & achieved signals to see the target current and actual current of motor. Both curves should stay close to each other. If Torque achieved lags significantly behind, it is sign of insuffucient supply voltage to overcome motor coil resistance or [[EMF]]. One possibility is also activation of [[STO]] that forces drive power stage off. Also check motor connection and measure the resistance of motor to see if it appears as proper electrical load (make sure to follow [[Power supply safe discharging]] if measuring resistance while motor is connected to drive). |
;Motor initialization has failed | ;Motor initialization has failed | ||
− | :If Hall sensonrs ( | + | :If Hall sensonrs ([[FBH]]) are not used, then drive may fail to initialize motor properly under significant mechanical load or due to weight of vertical axis. Try increasing current limits or connecting Hall sensors (if motor is equipped with them). |
;AC/BLDC/Linear motor locks up when it is supposed to rotate or generate torque | ;AC/BLDC/Linear motor locks up when it is supposed to rotate or generate torque | ||
:You can verify this condition by setting drive in torque mode and setting non-zero torque command (like 10-30% of motor rated torque) and rotating motor shaft by hand. If you feel motor is holding still and with some force you can make it jump/stop to another position, then the reason is invalid motor configuration parameters or an issue with position feedback device. Check following settings for correctness (all of them must be exactly correctly set to avoid this problem): | :You can verify this condition by setting drive in torque mode and setting non-zero torque command (like 10-30% of motor rated torque) and rotating motor shaft by hand. If you feel motor is holding still and with some force you can make it jump/stop to another position, then the reason is invalid motor configuration parameters or an issue with position feedback device. Check following settings for correctness (all of them must be exactly correctly set to avoid this problem): | ||
− | *Invert feedback direction | + | *Invert feedback direction [[FBI]] - try inverting this setting |
− | *Feedback device resolution | + | *Feedback device resolution [[FBR]] - also verify it by inspecting at Position feedback reading on Testing page while rotate motor by one turn. FBR value should be 1/4 of the total change of position counter during one rotation. |
− | *Motor pole count | + | *Motor pole count [[MPC]] - if unsure, see [[Determining motor pole count]] page |
− | *Hall sensors not properly functioning - try | + | *Hall sensors not properly functioning - try [[FBH]] setting Off |
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