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JoAnn Manges
2021-10-17 14:04:14 -04:00
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@ -124,27 +124,32 @@ So ALL my motors are 4-wire bipolar-series motors!
Rule of Thumb (https://robotics.stackexchange.com/questions/14071/how-to-calculate-my-power-supply-voltage-and-current):
1. Power_supply_current = number_of_motors * 1/3 * motor_peak_current for "bipolar-series motors" (All LDO motors are bipolar-Series Motors!)
2. Power_supply_current = number_of_motors * 2/3 * motor_peak_current for "bipolar-parallel motors"
Since ALL LDO motors I own are bipolar-Series Motors we will use Rule of Thumb #1 ONLY!
Power_ supply_current = (5 * 1/3 * 2.0 Amps) + (1 * 1/3 * 1.0A) = 3.333 + 0.333 = 3.6667 or 4 Amps in series for 48V @ 4Amp = 192 Watts or 200 Watts PSU (if the PSU supplies the full power without an aluminum plate for heat dissipation).
Power_ supply_current = (5 * 1/3 * 2.0 Amps) + (1 * 1/3 * 1.0A) = 3.333 + 0.333 = 3.6667 or 4 Amps.
So for **my bipolar-series motors** I will need how many Watts of power?
Answer: 48V @ 4Amp = 192 Watts or 200 Watts PSU (if the PSU supplies the full power without an aluminum plate for heat dissipation [PSU's Derating Curve]).
Power my Voron 2.4 48VDC 250 mm Build (running all HT motors from LDO at 48VDC) with the following:
See Spec Data sheet : https://www.meanwellusa.com/upload/pdf/UHP-200(R)/UHP-200-spec.pdf
1. 48V PSU UHP-200-48 (AC to DC PSU)[(4.2A*0.8)= 3.36 Amps; I need 4 Amps! [not on aluminum plate so 80%]] : https://www.digikey.com/en/products/detail/mean-well-usa-inc/UHP-200-48/7707242
1. 48V PSU UHP-200-48 (AC to DC PSU)[(4.2A*0.8)= 3.36 Amps; I need 4 Amps! [without an aluminum plate, so 80%]] : https://www.digikey.com/en/products/detail/mean-well-usa-inc/UHP-200-48/7707242
2. 24V PSU UHP-200-24 (AC to DC PSU)[(8.4A*0.8)= 6.72 Amps ; I want at least 9 Amps! [not on aluminum plate so 80%]]: https://www.digikey.com/en/products/detail/mean-well-usa-inc/UHP-200-24/7707239
2. 24V PSU UHP-200-24 (AC to DC PSU)[(8.4A*0.8)= 6.72 Amps ; I want at least 9 Amps! [without an aluminum plate, so 80%]]: https://www.digikey.com/en/products/detail/mean-well-usa-inc/UHP-200-24/7707239
3. 48V PSU UHP-350R-48 (AC to DC PSU)[(7.3A*0.70)= 5.32 Amps; I need 4 Amps [not on aluminum plate so 70%]] : https://www.digikey.com/en/products/detail/mean-well-usa-inc/UHP-200-48/7707242; https://www.newark.com/mean-well/uhp-350r-48/power-supply-ac-dc-48v-7-3a/dp/01AH8032?ost=uhp-350r-48
3. 48V PSU UHP-350R-48 (AC to DC PSU)[(7.3A*0.70)= 5.32 Amps; I need 4 Amps [without an aluminum plate, so 70%]] : https://www.digikey.com/en/products/detail/mean-well-usa-inc/UHP-200-48/7707242; https://www.newark.com/mean-well/uhp-350r-48/power-supply-ac-dc-48v-7-3a/dp/01AH8032?ost=uhp-350r-48
4. 24 PSU UHP-350R-24 [(14.6A*0.70)= 10.22 Amps; I want at least 9 Amps [not on aluminum plate so 70%]]: https://www.newark.com/mean-well/uhp-350r-24/power-supply-ac-dc-24v-14-6a/dp/01AH8029?ost=uhp-350r-24
4. 24 PSU UHP-350R-24 [(14.6A*0.70)= 10.22 Amps; I want at least 9 Amps [without an aluminum plate, so 70%]]: https://www.newark.com/mean-well/uhp-350r-24/power-supply-ac-dc-24v-14-6a/dp/01AH8029?ost=uhp-350r-24
5. 48V PSU UHP-500-48 (AC to DC PSU)[(10.45*0.7)= 7.315 Amps; I need 4 Amps [not on aluminum plate so 70%]] : https://www.newark.com/mean-well/uhp-500-48/power-supply-ac-dc-48v-10-45a/dp/01AH8038?ost=uhp-500-48
5. 48V PSU UHP-500-48 (AC to DC PSU)[(10.45*0.7)= 7.315 Amps; I need 4 Amps [without an aluminum plate, so 70%]] : https://www.newark.com/mean-well/uhp-500-48/power-supply-ac-dc-48v-10-45a/dp/01AH8038?ost=uhp-500-48
6. 24V PSU UHP-500-24 (AC to DC PSU)[(20.9*0.7) = 14.63 Amps; I want at least 9 Amps [not on aluminum plate so 70%]]: https://www.newark.com/mean-well/uhp-500-24/power-supply-ac-dc-24v-20-9a/dp/01AH8036?ost=uhp-500-24
6. 24V PSU UHP-500-24 (AC to DC PSU)[(20.9*0.7) = 14.63 Amps; I want at least 9 Amps [without an aluminum plate, so 70%]]: https://www.newark.com/mean-well/uhp-500-24/power-supply-ac-dc-24v-20-9a/dp/01AH8036?ost=uhp-500-24
So I could use option 3 & 4 OR 5 & 6. Since I plan on LEDS and running a Raspberry Pi 4B with a solid state disk drive via USB 3.1 interface instead of using a Micro-SD card I want to have enough power to add extras to the Voron Build.