FEETECH HL-3925 Servo Motor
FEETECH HL-3925 Servo Motor
The HL-3925-C001 is an advanced 12V 25kg Double Shaft Constant Force Serial Bus Servo featuring an aluminium case, copper gears (Gear Ratio 1/275), and durable ball bearings. Powered by a core motor, this no-limit servo operates within a 9V-12.6V rated input voltage range, delivering a peak stall torque of 25kg.cm@12V, a rated load of 4.8kg. cm@12V, and a no-load speed of 0.182sec/60°(55RPM)@12V, supported by a 2.7A stall current and 650mA@12V rated current. Characterized by a terminal resistance of 2.39 Ω and a KT constant of 9kg. cm/A, it offers multiple operating modes, including Mode 0 (Angle servo mode with absolute position controllable from 0-360 degrees), Mode 1 (Motor constant speed mode maintaining speed under increasing load), and Mode 2 (Motor constant current mode). For advanced control, it features constant force output (set output torque value for maintenance) and a Multi-Loop Mode (control of positive and negative 7 turns at highest accuracy, though the umber of power failure turns is not saved). Communicating via half duplex asynchronous serial communication with a PID control algorithm, it supports an ID range of 0-253, communication speeds of 38400bps ~ 1 Mbps, and a clockwise rotating direction(0→4096) with a 360° running degree. Its 12-bit resolution provides precise 0.088°(360°/4096) control and comprehensive feedback on load, position, speed, input voltage, current, and temperature. The servo measures A: 40.2mm B: 20.2mm C: 40mm, weighs 61.7± 1g, and includes a 25T/OD5.9mm horn gear spline with a 15CM connector wire.
| PRODUCT PARAMETERS | |
| Model | HL-3925-C001 |
| Product Name | 12V 25kg Double Shaft Constant Force Serial Bus Servo |
| Storage Temperature Range | -30℃~80℃ |
| Operating Temperature Range | -20℃~60℃ |
| Temperature Range | 25℃ ±5℃ |
| Humidity Range | 65%±10% |
| Size | A：40.2mm B：20.2mm C：40mm |
| Weight | 61.7± 1g |
| Gear type | Copper |
| Limit angle | No limit |
| Bearing | Ball bearings |
| Horn gear spline | 25T/OD5.9mm |
| Gear Ratio | 1/275 |
| Case | Aluminium |
| Connector wire | 15CM |
| Motor | Core Motor |
| Rated Input Voltage | 9V-12.6V |
| No load speed | 0.182sec/60°(55RPM)@12V |
| Runnig current(at no load) : | 170mA@12V |
| Peak stall torque | 25kg.cm@12V |
| Stall current | 2.7A@12V |
| Rated Load | 4.8kg. cm@12V |
| Rated current | 650mA@12V |
| Torque Constant (KT) | 9kg. cm/A |
| Terminal resistance | 2.39 Ω |
| Operating Modes | Mode 0: Angle servo mode (default mode, absolute position controllable from 0-360 degrees) Mode 1: Motor constant speed mode (motor constant speed mode, maintains speed without deceleration as the load increases) Mode 2: Motor constant current mode (motor constant current mode,maintains current without decreasing with increasing load) can achieve absolute position |
| Constant force output | Set the output torque value, the servo can maintain this torque (input the target torque value corresponding to address 44, the servo can maintain this torque) |
| Multi-Loop Mode | control of positive and negative 7 turns at the highest accuracy, but the umber of power failure turns is not saved (the resolution can be expanded, and the number of turns can be doubled) |
| Command signal | Digital Packet |
| Protocol Type | Half Duplex Asynchronous Serial Communication |
| ID range | 0-253 |
| Communication Speed | 38400bps ~ 1 Mbps |
| Control Algorithm | PID |
| Neutral Position | 180° (2048) |
| Running degree | 360° (when 0~4096) |
| Resolution [deg/pulse] | 0.088°(360°/4096) |
| Rotating Direction | Clockwise(0→4096) |
| Feedback | Load , Position ,Speed , Input Voltage , Current ,Temperature |