HVAC and Pumping Forum
Support Forum for HVAC and pumping machines, Modicon M17x and EcoStruxure Machine Expert HVAC software for chillers, AHU, CRAC units for datacenters or process chillers applications - from design, implementation to troubleshooting and more, by Schneider Electric.
Link copied. Please paste this link to share this article on your social media post.
Posted: 2023-03-03 05:25 AM
I got a couple of ratiometric pressure sensors which are taking far more current than expected. This means DC 5V is dropping to about 3.6 V (TM172PDG28R)
Besides ditching the sensors and getting new ones´is it possible to use an external power source ?
Link copied. Please paste this link to share this article on your social media post.
Link copied. Please paste this link to share this article on your social media post.
Posted: 2023-03-03 07:08 AM
Maximum current from 5Vout is 50mA.
Being ratiometric, I think you should use the 5V provided by M172.
Input impedance is higher than 20kohm, you should not have this kind of issues...
Link copied. Please paste this link to share this article on your social media post.
Link copied. Please paste this link to share this article on your social media post.
Posted: 2023-03-03 07:08 AM
Maximum current from 5Vout is 50mA.
Being ratiometric, I think you should use the 5V provided by M172.
Input impedance is higher than 20kohm, you should not have this kind of issues...
Link copied. Please paste this link to share this article on your social media post.
Link copied. Please paste this link to share this article on your social media post.
Posted: 2023-03-03 07:10 AM
Thanks. Yes, I would say so but wanted to make sure.
Link copied. Please paste this link to share this article on your social media post.
Create your free account or log in to subscribe to the board - and gain access to more than 10,000+ support articles along with insights from experts and peers.
With achievable small steps, users progress and continually feel satisfaction in task accomplishment.
Usetiful Onboarding Checklist remembers the progress of every user, allowing them to take bite-sized journeys and continue where they left.
of