Editing Argon user guide/Braking resistor
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− | {{ArgonManualNav}} | + | {{ArgonManualNav}}[[File:Regenres.jpg|400px|thumb|250 Watt 82 ohm regenerative resistor suitable for Argon drive]]Regenerative resistors are usually a required part with servo drives 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. | |
+ | Argon supports connecting braking resistor directly to drive [[Argon_wiring#J3_24V_power_and_motor_brake_port|J4 connector]]. | ||
+ | {{tip|Braking resistor is not always necessary. It is safe to test and use drive without braking resistor as drive will protect it self against overvoltage. If overvoltage faults occur during normal operation or during motor deceleration, add braking resistor to the system.}} | ||
==Suitable resistor type== | ==Suitable resistor type== | ||
Characteristics of Argon regenerative resistor output: | Characteristics of Argon regenerative resistor output: | ||
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* Resistor should be also mounted on heat sink | * Resistor should be also mounted on heat sink | ||
* Additionally it is a recommended to shield the resistor terminals from accidental touching | * Additionally it is a recommended to shield the resistor terminals from accidental touching | ||
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===Resistor sharing=== | ===Resistor sharing=== | ||
It is possible to share HV DC link between Argon drives to reduce number of braking resistors needed. Sharing DC bus also forms a higher power HV DC supply between the drives allowing higher power drawn from a single drive if other drives are running on lighter load. | It is possible to share HV DC link between Argon drives to reduce number of braking resistors needed. Sharing DC bus also forms a higher power HV DC supply between the drives allowing higher power drawn from a single drive if other drives are running on lighter load. | ||
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[[File:Brakeres_sharing.png|500px|thumb|Wiring of shared braking resistor between multiple Argon drives]] | [[File:Brakeres_sharing.png|500px|thumb|Wiring of shared braking resistor between multiple Argon drives]] | ||
{{electricshock|The terminals of the resistors are connected to dangerous voltages. Never touch them before drive power has been [[Power supply safe discharging|safely discharged]].}} | {{electricshock|The terminals of the resistors are connected to dangerous voltages. Never touch them before drive power has been [[Power supply safe discharging|safely discharged]].}} | ||
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