Template:DCMotor ESTOP: Difference between revisions

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The E-Stop input is shorted with a jumper wire by default. If you would like to implement an E-Stop system, we recommend connecting a normally-closed (NC) switch to the E-Stop input.
The E-Stop input is shorted with a jumper wire by default. If you would like to implement an E-Stop system, we recommend connecting a normally-closed (NC) switch to the E-Stop input.


[[Image:Multi_estop.png|link=|thumb|A 3PST E-stop switch|100px]]
====Multiple Motor Controllers====
====Multiple Motor Controllers====


If your project uses multiple motor controllers with E-Stops, we recommend wiring them separately because wiring them together can cause ground loops that introduce instability. The best solution is to buy a multi-throw E-Stop switch that provides a separate circuit for each controller.
If your project uses multiple motor controllers with E-Stops, our controllers have been designed so that all E-stops can be wired in parallel to a single button.
 
You can search for on an electronics retailer like Digikey for a DPST-NC switch for two controllers, or 3PST/4PST for three or four.


====Other Considerations====
====Other Considerations====
The E-Stop circuit does not physically interact with the supply voltage or the motor connection. You should not wire your motor, or your supply voltage to this circuit.
The E-Stop circuit does not physically interact with the supply voltage or the motor connection. You should not wire your motor, or your supply voltage to this circuit.

Latest revision as of 16:28, 9 September 2026

New Phidget motor controllers include an E-Stop circuit that can be used to trigger a Failsafe state.

E-Stop Input Terminals Result
Shorted Normal operation
Open Failsafe state activated

The E-Stop input is shorted with a jumper wire by default. If you would like to implement an E-Stop system, we recommend connecting a normally-closed (NC) switch to the E-Stop input.

Multiple Motor Controllers

If your project uses multiple motor controllers with E-Stops, our controllers have been designed so that all E-stops can be wired in parallel to a single button.

Other Considerations

The E-Stop circuit does not physically interact with the supply voltage or the motor connection. You should not wire your motor, or your supply voltage to this circuit.

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