FEETECH HL-3955 Servo Motor
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FEETECH HL-3955 Servo Motor
The HL-3955-C001 is a high-precision coreless motor double shaft servo designed for industrial automation and advanced robotics. Operating via a half-duplex asynchronous serial communication protocol, this intelligent actuator features a programmable PID control algorithm and comprehensive telemetry feedback, including real-time load, position, speed, input voltage, current, and temperature tracking. It integrates versatile operating modes, allowing seamless transitions between angle servo mode for absolute positioning, motor constant speed mode under variable loads, and motor constant current mode for torque regulation. Built with a robust aluminium case, steel gears, and ball bearings, the subsystem ensures mechanical reliability and constant force output, making it ideal for multi-loop closed-loop system integration.
| PRODUCT PARAMETERS | |
| Model | HL-3955-C001 |
| Product Name | 12V 55kg.cm Coreless Motor Double Shaft Constant Force Servo |
| Storage Temperature Range | -30℃~80℃ |
| Operating Temperature Range | -20℃~60℃ |
| Temperature Range | 25℃ ±5℃ |
| Humidity Range | 65%±10% |
| Size | A：40mm B：20mm C：40mm |
| Weight | 85± 1g |
| Gear type | steel |
| Limit angle | No limit |
| Bearing | Ball bearings |
| Horn gear spline | 25T/OD5.9mm |
| Gear Ratio | 1/378 |
| Case | Aluminium |
| Connector wire | 15CM |
| Motor | Coreless Motor |
| Rated Input Voltage | 9V-12.6V |
| No load speed | 0.182sec/60°(55RPM)@12V |
| Runnig current(at no load) | 150mA@12V |
| Peak stall torque | 55kg.cm@12V |
| Stall current | 3.0A@12V |
| Rated Load | 13.5kg. cm@12V |
| Rated current | 800mA@12V |
| KT | 18.5kg. cm/A |
| Terminal resistance | 1.75 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 |