Regenerative resistor - Revision history

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

2015-08-28T19:54:28Z

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

Tero K at 23:18, 23 July 2015

2015-07-23T23:18:28Z

Tero K at 23:17, 23 July 2015

2015-07-23T23:17:08Z

Tero K at 23:15, 23 July 2015

2015-07-23T23:15:59Z

Tero K: Created page with "250 Watt 82 ohm regenerative resistor suitable for Argon driveRegenerative resistors are usually a part with servo systems to absorb returned..."

2015-03-30T13:09:10Z

Created page with "250 Watt 82 ohm regenerative resistor suitable for Argon driveRegenerative resistors are usually a part with servo systems to absorb returned..."

New page

[[File:Regenres.jpg|400px|thumb|250 Watt 82 ohm regenerative resistor suitable for Argon drive]]Regenerative resistors are usually a part with servo systems to absorb returned energy from decelerating or braking servo axis.

Servo drive with motor can act two ways: energy supply and energy generator. The generator behavior occurs during decelerations and this causes current flow from motor to drive power supply capacitors. If that generated energy is not absorbed anywhere, the voltage of capacitors will rise above overvoltage threshold and trigger an software clearable overvoltage fault.

{{tip|In most installations braking resistor is not needed at all. Resistor is needed in cases where fast moving motor with high inertial load is stopped rapidly causing conversion of the kinetic energy into electric current which needs to be dissipated by a resistor. Experimenting without resistor is safe as drive's overvoltage protection will prevent any damage occurring. If drive faults to overvoltage fault during deceleration, then try adjusting [[FOV]] to higher value or add a braking resistor.}}

[[category:Glossary]]

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 Servo drive with motor can act two ways: energy supply and energy generator. The generator behavior occurs during decelerations and this causes current flow from motor to drive power supply capacitors. If that generated energy is not absorbed anywhere, the voltage of capacitors will rise above overvoltage threshold and trigger an software clearable overvoltage fault.
-{{tip|In most installations braking resistor is not needed at all. Resistor is needed in cases where fast moving motor with high inertial load is stopped rapidly causing conversion of the kinetic energy into electric current which needs to be dissipated by a resistor. Experimenting without resistor is safe as drive's overvoltage protection will prevent any damage occurring. If drive faults to overvoltage fault during deceleration, then try adjusting [[FOV]] to higher value or add a braking resistor.}}
+{{tip|In most installations braking resistor is not needed at all. Resistor is needed in cases where fast moving motor with high inertial load is stopped rapidly causing conversion of the kinetic energy into electric current which needs to be dissipated by a resistor. Experimenting without resistor is safe as drive's overvoltage protection will prevent any damage occurring. If drive faults to overvoltage fault during deceleration, then try adjusting {{param|FOV}} to higher value or add a braking resistor.}}
 ==Overvoltage faults==
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 <gallery widths="330px" heights="500px">
 File:regeneration1.png|Voltage generation during deceleration of motor (motor current is negative, current is pumped to HV DC bus causing a 40 VDC rise).
-File:regeneration2.png|Voltage generation during deceleration of motor (motor current is negative, current is pumped to HV DC bus). However, in this case drive is equipped with regenerative resistor and tightly set [[FOV]] parameter which prevents the significant voltage rise (only 5 VDC rise).
+File:regeneration2.png|Voltage generation during deceleration of motor (motor current is negative, current is pumped to HV DC bus). However, in this case drive is equipped with regenerative resistor and tightly set {{param|FOV}} parameter which prevents the significant voltage rise (only 5 VDC rise).
 File:regeneration3accel.png|Example of accelerating motor (motor current is positive, power is drawn from HV DC bus which is causing a temporary voltage drop). Rectified 50 Hz mains AC ripple is easily seen in the voltage graph.
 </gallery>

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 ==Overvoltage faults==
 Scenarios where returned energy is causing the rise of HV DC bus voltage:
 *Deceleration of motor speed when there is significant amount of energy stored in mechanical motion (rotating inertia or moving mass). This typically occurs with spindles and linear axes.
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 ==See also==
-*[[Overvoltage and undervoltage faults]]
+*[[Overvoltage and undervoltage faults]] - practical guide for sizing regenerative resistor
 [[Category:Glossary]]

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 {{tip|In most installations braking resistor is not needed at all. Resistor is needed in cases where fast moving motor with high inertial load is stopped rapidly causing conversion of the kinetic energy into electric current which needs to be dissipated by a resistor. Experimenting without resistor is safe as drive's overvoltage protection will prevent any damage occurring. If drive faults to overvoltage fault during deceleration, then try adjusting [[FOV]] to higher value or add a braking resistor.}}
-See also:
+==Overvoltage faults==
 *[[Overvoltage and undervoltage faults]]
 [[Category:Glossary]]

← Older revision		Revision as of 23:15, 23 July 2015
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	{{tip\|In most installations braking resistor is not needed at all. Resistor is needed in cases where fast moving motor with high inertial load is stopped rapidly causing conversion of the kinetic energy into electric current which needs to be dissipated by a resistor. Experimenting without resistor is safe as drive's overvoltage protection will prevent any damage occurring. If drive faults to overvoltage fault during deceleration, then try adjusting [[FOV]] to higher value or add a braking resistor.}}		{{tip\|In most installations braking resistor is not needed at all. Resistor is needed in cases where fast moving motor with high inertial load is stopped rapidly causing conversion of the kinetic energy into electric current which needs to be dissipated by a resistor. Experimenting without resistor is safe as drive's overvoltage protection will prevent any damage occurring. If drive faults to overvoltage fault during deceleration, then try adjusting [[FOV]] to higher value or add a braking resistor.}}

−	[[~~category~~:Glossary]]	+	See also:
		+	*[[Overvoltage and undervoltage faults]]
		+
		+	[[Category:Glossary]]