SiePortal

The integrated platform for your product selection, buying and support workflow - bringing together Industry Mall and Online Support.

Products & Services
- Menu temporary not available
- Menue temporary not available
- {{item.title}}
Support Support
{{(apiData.Support | filter:{'rank':1}:true)[0].title}} Support
- Menu temporary not available
- Menue temporary not available
- {{item.title}}
MySiePortal MySiePortal
{{(apiData.MySiePortal | filter:{'rank':1}:true)[0].title}} MySiePortal
- Menu temporary not available
- Menue temporary not available
- {{item.title}}
Cart ({{apiData.CartCount}})

Navigation

LOGO transistor output bypass

4/13/2017 7:54 AM	Rate (0)
auto_r Experienced Member Joined: 8/27/2008 Last visit: 5/13/2025 Posts: 57 Rating: (2)	Hello, The LOGO transistor outputs are non isolated. If i have auxiliary relay connected to the output ("A1" connected to "Q1" ) and i would like to bypass the LOGO output by applying external 24VDC voltage directly to the relay coil "A1", i.e 24VDC would be applied to the "Q1" output of the LOGO as well. Does this damage the logo output in either state "1" or "0" ? or i need to install diode on the output to prevent current going into "Q1"? Best Regards,

Suggestion To thank Quote Answer

4/14/2017 8:15 AM	Rate (0)
cs_dk Posts: 67 Rating: (7)	I would add a diode, just to play safe.
cs_dk Posts: 67 Rating: (7)
Suggestion To thank Quote Answer
This contribution was helpful to 1 thankful Users auto_r

4/20/2017 10:22 AM	Rate (0)
auto_r Experienced Member Joined: 8/27/2008 Last visit: 5/13/2025 Posts: 57 Rating: (2)	Hello, I installed diode and it work properly. Thank you

Suggestion To thank Quote Answer

Share this page:

Share this page on...