Navigation
parallel connection of 2 UV detectors QRA with Gas burner controller LFL1.322E
Created by: fh_derdevil2005@yahoo.com at: 4/23/2013 4:15 PM (2 Replies)
Rating 
Thanks 0
3 Entries
| 4/23/2013 4:15 PM | |
|
Posts: 3 Rating:
|
I am using Gas burner controller LFL1.322E with the UV flame detector QRA2 I have connected one UV with the controller and it is working well. When i connected the two in parallel: 1. if ONLY one of them sense flame,it continue 2. The controller lock out if BOTH controllers do NOT sense Flame I need to know how to connect 2 UV flame detector QRA2 in parallel - as mentioned in the datasheet page 4- to lockout if ANY of the UVs do not sense flame. Attached the datasheet of the Controller Thanks in advance Fady H. Tawfik Automation Engineer AttachmentLFL.pdf (1207 Downloads) |
Last edited by: O_Moderator at: 4/24/2013 9:04 AMcontact data deleted |
|
| 5/18/2013 1:06 PM | |
|
Posts: 1 Rating:
|
Hi There. You could consider connecting a Siemens LFE10 in series with your QRA from terminal 23 of LFL1….. And connect you second QRA to the LFE10 Using the N/O connection on the LFE10 will then interrupt the Primary signal when the QRA on the LFE10 loses its flameand the LFL1….. will then go into lockout AttachmentLAE_10_man.pdf (982 Downloads) |
Follow us on