Homing and limits: what to confirm first
Homing and limits start with the sensor. NPN 24 V is a common input. The terminal names on the unit remain the final reference.
- Common inputNPN 24 V
- Final referenceSilkscreen
- EncoderDoes not replace limits
- Wiring drawingAfter contact
Confirm the level and the mounting direction first
Confirm the homing sensor and the positive and negative limits as separate mounting directions. A reversed sensor is not corrected by changing the homing order into a different mechanism.
NPN 24 V is a common input condition. The unit silkscreen and model-specific wiring information identify the terminal.
The encoder and the limits are separate
| Question | Where to look | What it does not prove |
|---|---|---|
| Whether to home on every power-up | The encoder type on the servo page | Wattage does not prove an absolute encoder |
| Whether the limits stay | The sensor page and the silkscreen | An absolute encoder does not remove the limits |
| The full wiring | The drawing supplied after contact | A common input is not the only wiring |
Wiring information
- Terminal tables and full wiring drawings are supplied for the selected MSP model.
- Include the axis count, sensor type, and plan code in the inquiry.
- Select the sensor on the parts page from its input condition and mounting method.
Sensor configuration
Application: the machine needs homing and limit protection, and the sensor still has to be checked.
Configuration: level, mounting direction, and the terminal names on the silkscreen. Do not fill an unknown wire with a default.
Related information
Related pages: Sensors
Include the sensor type, mounting direction, and MSP model when requesting wiring information. Contact