Skip to content

PWM servo setup

Choose a setup route · Bus servo setup

Use this path only for an exact model documented as PWM-controlled. PWM does not use FD serial-bus discovery, device IDs, baud rates or SCS/STS/HLS registers.

Confirm these inputs before power-up

Required information Confirm
Full model and behavior Suffix, position-versus-speed control and document revision
Power and connector Allowed supply range, current needs, connector orientation, pinout and shared ground
Control signal Voltage level, period, pulse limits, neutral/stop setting and signal-loss behavior
Mechanical boundaries Permitted travel, direction, clearance, load condition and power disconnect

Check the model resource table. Without documented period or pulse limits, do not use another servo's settings or sweep an assumed full range.

First validation

  1. Wire with power off and PWM disabled. Confirm polarity, shared ground and signal voltage from the formal documents.
  2. Disconnect linkages/load, leave clearance for possible start-up movement and arrange an immediate power disconnect.
  3. Configure the confirmed period and neutral/stop setting. Do not equate angle zero with motor stop.
  4. Apply only a confirmed minimal test signal and check the expected position/speed response.
  5. Make a small change within documented bounds and record direction, response and faults. Establish software limits before attaching the mechanism.

Completion record

Record the full model suffix, controller/toolchain, supply, pinout revision, actual period/pulse settings, unloaded result, stop method and date. A shared PWM library's defaults are not model-specific validation.

Signal present but no response · Assembly and zero handoff