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The initial test confirms that your OSSM actuator is assembled correctly and ready for use. You will connect a controller (wired remote or RADR wireless remote), apply power, observe the automatic homing sequence, and run a short test stroke.

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Prerequisites

  • Actuator fully assembled and securely mounted
  • Motor and control board wired per your kit instructions
  • Clear workspace with at least 200 mm of free travel in front of the end effector
  • If using the RADR wireless remote, update your OSSM firmware to 2.0.0 or newer. See Flashing your OSSM
Keep hands, hair, cables, and clothing away from moving parts and pinch points during power‑on and testing.

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Required Components and Tools

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Components

ComponentCountSpecification / Notes
24 mm Nut1Secures attachments to the threaded end of the End Effector
OSSM Wired Remote (RJ45) or RADR Wireless Remote1Choose the controller you have on hand
Power Source124 V DC power supply compatible with your OSSM control board

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Tools

No tools are required for this test.
The 24 mm nut is not required for motion testing, but installing it now confirms the threads are clean and ready for attachments.

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Step-by-Step: Initial Test

1

Prepare the end effector

Install the 24 mm nut on the threaded end of the End Effector by turning it clockwise until it seats on the flat.
This confirms the threading is clean and that the nut engages fully before you add any attachments.
The 24 mm nut threads on smoothly by hand and sits flush against the end of the threaded section.
2

Prepare your workspace

Ensure the actuator has unobstructed travel and the stand/mount is stable.
Never place body parts in line with the actuator during power‑on. Keep the rail area clear to avoid pinch points.
The OSSM is stable and there is at least 200 mm of free travel ahead of the End Effector.
3

Connect your controller

Use the tab that matches your setup.
Firmly insert the wired remote’s RJ45 connector into the control board’s remote port until it clicks.
This is a remote-control port that uses an RJ45 connector style. It is not an Ethernet/network connection.
The RJ45 plug is fully seated and does not pull out with a light tug.
4

Apply power

Connect the 24 V DC power supply and switch the OSSM on.
Use only the specified voltage for your board. Incorrect voltage can damage electronics.
The control board powers up. Any status LEDs on the board or controller illuminate.
5

Observe automatic homing

After power‑on, the actuator will perform automatic sensorless homing.
  • Expect a brief movement as the system finds its reference position
  • The controller display (wired) or board LEDs will indicate the unit is active
OSSM boards use sensorless homing—no limit switches required. A small extend/retract motion is normal as the controller establishes its zero position.
Homing completes without errors and the actuator stops at a reference position.
6

Verify homing direction

Watch the first movement during homing.
  • Expected behavior: the threaded end extends slightly, then retracts to its reference
If the actuator retracts first and then extends (reversed direction), power off and review your motor wiring before continuing. See Motor Wiring
The threaded end extends first, then retracts. Direction is correct.
7

Perform a short test stroke

Run a gentle motion test using your controller.
  • Set a small stroke length (for example, 10–20 mm) and a shallow depth
  • Slowly increase speed to ~10–20% until the actuator moves
  • Observe for smooth, consistent motion without binding or unusual sounds
Make only small adjustments at a time. If you hear grinding or see stuttering, stop and investigate alignment, belt tension, and wiring before proceeding.
The actuator moves smoothly at low speed with the configured small stroke.
8

Stop the test safely

  • Reduce speed to zero, then pause/stop motion
  • Power off the OSSM when finished
On RADR, a single press of the middle button pauses; a double press stops and resets to defaults. See RADR Quick Start for control references.
Motion has stopped and the OSSM is powered down or idle.

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Troubleshooting

  • Confirm the 24 V supply is connected and switched on
  • Check all board connectors are fully seated
  • Power cycle the OSSM and try again
  • If still stuck, recheck motor wiring
  • If you sourced your motor from a third party, ensure it is programmed correctly
  • Power off immediately
  • Verify motor phase wiring order and polarity
  • Correct wiring per Motor Wiring guide, then retest
  • Reseat the RJ45 until it clicks; try the other end of the cable
  • Inspect the connector for bent pins or debris
  • Confirm the board is powered and LEDs are on
  • Ensure OSSM firmware is 2.0.0+ and complete homing first
  • Keep the RADR within a few feet of the OSSM
  • Power cycle both devices, then try again
  • See RADR Quick Start and Device Support
  • Stop the motion and power off
  • Check rail alignment, belt tension, and that nothing obstructs travel
  • Resume testing at low speed and short stroke

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Next steps

RADR Quick Start

Pairing, play controls, and pattern mode.

Update or Reflash Firmware

Use the Web Flasher to install the latest firmware.

Motor Wiring Guide

Fix reversed motion or connection issues.

Ready-to-Play Info

Safety notes, included accessories, and setup tips.
If you completed all checks without issues, your OSSM actuator passed the initial test and is ready for attachments and further configuration.