Question

On the SU1, SU2, and TU1 ultrasonic sensors, how does the CONTROL wire work?

Answer

Control Wire NOT connected : sensor functions normally (ie, turns on/off relative to presence of target)


Control Wire connected to ground : sensor output maintains last output (on/off) until removed from ground. (Basically freezing sensor in the last state)


When multiple sensors are in close proximity it is recommended to connect the control wires together. This forces the sensors to emit at the exact same time. This reduces the interference risk because when the beam of one sensor reaches the other one, its energy is faded to a point it is not detected.

---

FAQ Subcategory: None

This item was last updated on 2011-09-15
Document ID: 1382

---

The information provided in the AutomationDirect knowledge base is provided "as is" without warranty of any kind. AutomationDirect disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall AutomationDirect or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if AutomationDirect or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion of limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.