TMC2100 auf RAMPS 1.4: Motorstrom einstellen 06. December 2017 06:02 |
Registrierungsdatum: 10 Jahre zuvor Beiträge: 4 |
Main Features: - Step angle: 1.8 degree - Number of phases: 2 - Voltage: 3.96V - Current: 0.9A - Resistance: 4.4 ohm - Holding torque: 0.34 Nm - Operating ambient temperature: -20 Deg.C - 50 Deg.C - Operating environment humidity: 90 percent - Axis diameter: 5mm
How to set the stepper motor current? The best way to set the motor current is by measuring the voltage on the Vref pin (0...2.5V) and adjusting the voltage with the potentiometer. The maximum motor current is 1.77A RMS (0.11Ohm sense resistors). Irms = (Vref * 1.77A) / 2.5V = Vref * 0.71 Vref = (Irms * 2.5V) / 1.77A = Irms * 1.41 = Imax Vref -> Voltage on Vref pin Irms -> RMS (Root Mean Square) current per phase (Irms = Imax / 1.41) Imax -> Maximum current per phase (Imax = Irms * 1.41) Example: A voltage of 1.0V on Vref sets the motor current to 0.71A RMS. Note: On some stepper motor drivers the maximum current (e.g. A4988) is set via Vref and on others the RMS current (e.g. TMC2100). The Trinamic drivers have an automatic thermal shutdown (at about 150°C) if the chip gets to hot. But always ensure a good cooling of the drivers.
Technische Daten: Typ: MKS TMC2100 Abmessung: 1,5 x 2mm Die Berechnungsmethode des Fahrerstroms: i = Vref * 1.9 / 2.5 Default Vref ist 0.65V, Default Current ist 0,5A, max Strom ist 1A.
Re: TMC2100 auf RAMPS 1.4: Motorstrom einstellen 06. December 2017 06:38 |
Registrierungsdatum: 10 Jahre zuvor Beiträge: 857 |
Home of Graber i3 reloaded, based on Ramps 1.4_TMC2100 / LCD-SD-support / Marlin / MK8 upgraded direct drive
Re: TMC2100 auf RAMPS 1.4: Motorstrom einstellen 06. December 2017 10:33 |
Registrierungsdatum: 10 Jahre zuvor Beiträge: 4 |
Re: TMC2100 auf RAMPS 1.4: Motorstrom einstellen 06. December 2017 10:57 |
Registrierungsdatum: 10 Jahre zuvor Beiträge: 857 |
Home of Graber i3 reloaded, based on Ramps 1.4_TMC2100 / LCD-SD-support / Marlin / MK8 upgraded direct drive