WSAL23489 – DDSM115/en

Documentation notice: This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.

Summary

The DDSM115 is an integrated permanent magnet synchronous motor (PMSM) with a built-in encoder and FOC drive controller. It provides low speed at high torque, low noise, and a compact all-in-one design for robotics, AGV, and vehicle platforms.

Related products at JW Tech

WSAL23489 – DDSM115 Direct Drive Servo Motor, Low Speed & High Torque, Low Noise, All-In-One Design, Hub Motor

Technical overview

Input power: 18 V DC (5S LiPo); allowable voltage range 12–24 V DC.
No-load speed: 200 ± 10 rpm; rated speed: 115 rpm; rated torque: 0.96 Nm; locked-rotor torque: 2.0 Nm.
Rated current: 1.5 A; locked-rotor current ≤ 2.7 A; no-load current ≤ 0.25 A.
Torque constant: 0.75 Nm/A; speed constant: 11.1 rpm/V; maximum efficiency ≥ 60 %.
Encoder resolution: 4096; relative accuracy: 1024; protection rating IP54; weight: 765 ± 15 g.
Operating temperature range: −20 °C to +45 °C; overheat protection at 80 °C, released below 75 °C.
RS485 bus: baud rate 115200, 8 data bits, 1 stop bit, no parity, 10-byte frames, response rate up to 500 Hz.
Protection thresholds: bus overcurrent 3 A, phase overcurrent 4.6 A, locked-rotor trip after > 5 s; all protection releases after 5 s.

Commands and examples – verify before use:

Moduswechsel in den Drehzahlkreis: 01 A0 00 00 00 00 00 00 00 02
Abfrage des Betriebsmodus: 01 74 00 00 00 00 00 00 00 04
Bremsbefehl (gültig im Drehzahlmodus): 01 64 00 00 00 00 00 FF 00 D1
ID-Einstellung (fünfmal senden): AA 55 53 01 00 00 00 00 00 CB
ID-Abfrage: C8 64 00 00 00 00 00 00 00 DE
Stromkreiseingaben (−32767…32767 entspricht −8 A…+8 A): z. B. 01 64 00 00 00 00 00 00 00 50 (0 A)
Drehzahlkreiseingaben (−330…330 rpm): z. B. 01 64 00 32 00 00 00 00 00 D3 (+50 rpm)
Positionskreiseingaben (0…32767 entspricht 0°…360°): z. B. 01 64 27 10 00 00 00 00 00 57 (10000)

Notes and version constraints

Before first start-up, verify the supply voltage (18 V / 5S LiPo) and correct wiring; poor contact can cause malfunction or damage.
Do not immerse the motor in water; water ingress may cause abnormal operation or damage.
Do not touch rotating parts during operation; high-torque operation generates heat – burn risk.
Do not disassemble without authorization; this may cause malfunction, damage, or safety hazards.
When querying the motor ID, only one motor should be connected to the RS485 bus, otherwise responses may collide.
CRC8 values in the example commands are manufacturer-provided; any custom command must be validated with a CRC-8/MAXIM calculator before sending.
The source contains placeholder tokens ({{{name2}}}, {{{userDefinedInfo}}}, etc.), indicating incomplete metadata – technical details should be verified against the current product page.
The stated protection thresholds (3 A, 4.6 A, 80 °C) are taken from the source; if the firmware version differs, values may vary – please confirm with Waveshare.

Source and revision record

DDSM115 - Waveshare Wiki
Source revision: 75866
Captured: 2026-09-04T03:03:05+00:00
SHA-256: ebd0080b357115ad9a805fc1fa39fb9418afbb07d96432f998460a3d8ff9398a