Motor not moving troubleshooting - Revision history

Tero K: Text replacement - "{{param|STO}}" to "STO"

2015-08-28T20:12:49Z

Text replacement - "{{param|STO}}" to "STO"

Tero K: Text replacement - "\[\[([A-Z]{2,3})\]\]" to "{{param|$1}}"

2015-08-28T19:54:07Z

Text replacement - "\[\[([A-Z]{2,3})\]\]" to "{{param|$1}}"

Tero K at 15:51, 21 May 2015

2015-05-21T15:51:38Z

Tero K: lock up problem explained

2015-02-05T21:09:14Z

lock up problem explained

Tero K: /* List of reasons */

2014-04-21T20:32:50Z

‎List of reasons

Tero K: /* List of reasons */

2014-04-21T20:28:55Z

‎List of reasons

Tero K: /* List of reasons */

2014-04-21T20:27:38Z

‎List of reasons

Tero K: /* List of reasons */

2014-04-21T20:16:06Z

‎List of reasons

Tero K: Created page with "This article lists common reasons for motor not producing desired motion when using GD motor drives. The suggested actions are described for drives supporting Granity sof..."

2014-04-21T20:15:29Z

Created page with "This article lists common reasons for motor not producing desired motion when using GD motor drives. The suggested actions are described for drives supporting Granity sof..."

New page

This article lists common reasons for motor not producing desired motion when using GD motor drives.

The suggested actions are described for drives supporting [[Granity]] software. Hoever similar instructions apply to older [[GDtool]] based drives too.
==List of reasons==
;Fault state going active
: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
:Double check all motor parameters especially on Machine tab of Granity. Also see the previous paragraph ↑↑.
;No setpoint signal
:Try moving motor by giving commands Granity's Set Abs and Set Inc buttons.
;Output current is insufficient to overcome load friction or weight
:Try increasing motor current limits or try motor without any load
;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 together. If Torque achieved lags 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.
;Motor initialization has failed
: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).
[[category:Argon troubleshooting]]

@@ Line 12: / Line 12: @@
 :Try increasing motor current limits or try motor without any load
 ;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 {{param|EMF}}. One possibility is also activation of {{param|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).
+: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 {{param|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
 :If Hall sensonrs ({{param|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).

@@ Line 4: / Line 4: @@
 ==List of reasons==
 ;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 [[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.
+: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 {{param|MPC}}, {{param|FBR}}, {{param|FBI}} and {{param|FBH}}. In many cases counting direction of encoder is opposite of assumed, so inverting {{param|FBI}} setting may be needed. All of these settings safe to experiment if motor is shaft unmounted.
 ;Incorrect motor settings
 :Double check all motor parameters especially on Machine tab of Granity. Also see the previous paragraph ↑↑.
@@ Line 12: / Line 12: @@
 :Try increasing motor current limits or try motor without any load
 ;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 [[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).
+: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 {{param|EMF}}. One possibility is also activation of {{param|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
-: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).
+:If Hall sensonrs ({{param|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
 :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 [[FBI]] - try inverting this setting
+*Invert feedback direction {{param|FBI}} - try inverting this setting
-*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.
+*Feedback device resolution {{param|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 [[MPC]] - if unsure, see [[Determining motor pole count]] page
+*Motor pole count {{param|MPC}} - if unsure, see [[Determining motor pole count]] page
-*Hall sensors not properly functioning - try [[FBH]] setting Off
+*Hall sensors not properly functioning - try {{param|FBH}} setting Off
 [[category:Argon troubleshooting]]
 [[category:IONI troubleshooting]]

← Older revision		Revision as of 15:51, 21 May 2015
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	[[category:Argon troubleshooting]]		[[category:Argon troubleshooting]]
		+	[[category:IONI troubleshooting]]

@@ Line 8: / Line 8: @@
 :Double check all motor parameters especially on Machine tab of Granity. Also see the previous paragraph ↑↑.
 ;No setpoint signal
-:Try moving motor by giving commands Granity's Set Abs and Set Inc buttons.
+:Try moving motor by giving commands Granity's Set Abs and Set Inc buttons. If motion is produced, then check correct setpoint source settings, wiring and phyiscal presence of proper signal.
 ;Output current is insufficient to overcome load friction or weight
 :Try increasing motor current limits or try motor without any load