Selection Criteria
Motor type
For the new Ultra EC series, Portescap offers 3 different types of brushless DC motors, identified by B for the slotted series (high torque, high speed, autoclavable option), BH for the slotless series (high speed, high efficiency), and EC (for Electronically Commutated).
This product line is offered with various options: S (high-speed optimization), T (high-torque optimization,) and H (medium torque and speed), directly linked to the needs of your applications.
Motor size
Typically the best place to start when sizing a brushless DC motor is matching motor size (diameter, length). Diameter ranges from 13 mm to 30 mm. Brushless DC slotted motor diameter and length are specified in inches. Brushless DC slotless motor diameter is specified in milimeters, and length as a coding (S, M, L, ...). Ultra EC Series motor diameter and length are specified in milimeters.
Winding
Various winding options are proposed to best match with the application requirements – voltage, resistance and torque constant are the basic parameters for selection.
Electronics
Generally with three winding phases, brushless DC motors are electronically commutated. A simple way to drive these motors is to power two phases at a time, using hall sensors to know the rotor position, with a simple logic to allow optimal energizing of the phases as a function of rotor position. Another way is to use sensorless electronics, working with the zero-crossing criteria to determine rotor position and commutation cycle. This electronics format is well suited for constant speed applications as they are highly insensitive to hostile environments.
| Brushless DC Slotted | ||
| B 05 08 NO24A R 00 05 R | ||
| B | B = Brushless DC | |
| 05 | Diameter (in) | |
| 08 | Stack length | |
| NO24A | Winding | |
| R | Motor shaft option R = Round 0 = Gearhead |
|
| 00 | Type 00 = Motor only 0G = Gearhead |
|
| 05 | Gearbox ratio Ex: 05 = 5:1 |
|
| R | Gearhead shaft R = Round |
|
| Brushless DC Slotless | ||
| 22 BH M 8B P 1 | ||
| 22 | Diameter (mm) | |
| BH | Brushless DC | |
| M | Body length S, C = Short M = Medium L = Long F = Flat |
|
| 8B | 8B = Hall sensor, 8 wires 3C = Sensorless, 3 wires 6A = On-board electronic, 6 wires 2A = On-board electronic, 2 wires |
|
| P | Winding | |
| 1 | Execution coding | |
| Ultra EC Series | ||
| 22 EC S 45 10B 24 1 | ||
| 22 | Diameter (mm) | |
| EC | Brushless DC | |
| S | Ultra Platform designation S = High speed T = High torque P = Price-to-performance cost advantage |
|
| 45 | Length (mm) | |
| 10B | 10B = hall sensor with thermal sensor, 10 wires 8B = hall sensor, 8 wires 3C = sensorless, 3 wires |
|
| 24 | Winding | |
| 1 | Execution coding | |