Tayfur Well-Known Member Licensed User Longtime User Aug 6, 2019 #1 Normaamly cınnecftion reading 24Volt(Right side) .its normal. But .I connected Optocubler board like under below. Iam reaading A-B points 12Volt. Why reduce voltage. This is problem for PLC. How can i fix? What/where is problem. I am not Elektroinc tech. Please explane simple. Thanks. Last edited: Aug 6, 2019
Normaamly cınnecftion reading 24Volt(Right side) .its normal. But .I connected Optocubler board like under below. Iam reaading A-B points 12Volt. Why reduce voltage. This is problem for PLC. How can i fix? What/where is problem. I am not Elektroinc tech. Please explane simple. Thanks.
tigrot Well-Known Member Licensed User Longtime User Aug 6, 2019 #2 it looks like tou created a resistor divider. I don't have internal schematic, so I can only guess... I think the input inpedence of plc is quite low. Upvote 0
it looks like tou created a resistor divider. I don't have internal schematic, so I can only guess... I think the input inpedence of plc is quite low.
Tayfur Well-Known Member Licensed User Longtime User Aug 6, 2019 #3 tigrot said: it looks like tou created a resistor divider. I don't have internal schematic, so I can only guess... I think the input inpedence of plc is quite low. Click to expand... This schematic is OPTOCUPLER Board View attachment 82904 Upvote 0
tigrot said: it looks like tou created a resistor divider. I don't have internal schematic, so I can only guess... I think the input inpedence of plc is quite low. Click to expand... This schematic is OPTOCUPLER Board View attachment 82904
tigrot Well-Known Member Licensed User Longtime User Aug 6, 2019 #4 Any info about plc input impedence? Upvote 0
f0raster0 Well-Known Member Licensed User Longtime User Aug 7, 2019 #5 maybe this link can help: https://www.proface.com/support/index?page=content&country=ES&lang=es&locale=en_US&id=FA142566&prd= Upvote 0
maybe this link can help: https://www.proface.com/support/index?page=content&country=ES&lang=es&locale=en_US&id=FA142566&prd=
Tayfur Well-Known Member Licensed User Longtime User Aug 7, 2019 #6 tigrot said: Any info about plc input impedence? Click to expand... Sorry;I think optocoubler borad. I found now PLC Upvote 0
tigrot said: Any info about plc input impedence? Click to expand... Sorry;I think optocoubler borad. I found now PLC
tigrot Well-Known Member Licensed User Longtime User Aug 7, 2019 #7 Short 3k resistor on output. The input impedance is high enough. Upvote 0
Tayfur Well-Known Member Licensed User Longtime User Aug 7, 2019 #8 tigrot said: Short 3k resistor on output. The input impedance is high enough. Click to expand... Thak you for support @tigrot What could be the solution to the problem? Where do I place resistance/diod.. etc? Can you show me the diagram above? Upvote 0
tigrot said: Short 3k resistor on output. The input impedance is high enough. Click to expand... Thak you for support @tigrot What could be the solution to the problem? Where do I place resistance/diod.. etc? Can you show me the diagram above?
tigrot Well-Known Member Licensed User Longtime User Aug 7, 2019 #9 Short resistor 3K at left of diagram . Upvote 0
Tayfur Well-Known Member Licensed User Longtime User Aug 7, 2019 #10 tigrot said: Short resistor 3K at left of diagram . Click to expand... Which locaiton 1-2-3-4-5 for 3Kohm? Can I use 4,7Kohm resistor for alternaitve? its now ready. Last edited: Aug 7, 2019 Upvote 0
tigrot said: Short resistor 3K at left of diagram . Click to expand... Which locaiton 1-2-3-4-5 for 3Kohm? Can I use 4,7Kohm resistor for alternaitve? its now ready.
tigrot Well-Known Member Licensed User Longtime User Aug 7, 2019 #11 One more question: type of pnp sensor? Upvote 0
Tayfur Well-Known Member Licensed User Longtime User Aug 8, 2019 #12 PNP DC 10-30V Sn:8mm Ia:200ma Upvote 0
Tayfur Well-Known Member Licensed User Longtime User Aug 8, 2019 #13 tigrot said: One more question: type of pnp sensor? Click to expand... a friend told me, PLC electrical power may not be enough. all 24v Sensors (for all input divice source is PLC output for 24V. (like Red wire) is it possible??? Upvote 0
tigrot said: One more question: type of pnp sensor? Click to expand... a friend told me, PLC electrical power may not be enough. all 24v Sensors (for all input divice source is PLC output for 24V. (like Red wire) is it possible???
tigrot Well-Known Member Licensed User Longtime User Aug 8, 2019 #14 Use an external source. The device should not sink more than 3mA at 24 V. Is sensor able to work at 24 V? I don't have any info Last edited: Aug 8, 2019 Upvote 0
Use an external source. The device should not sink more than 3mA at 24 V. Is sensor able to work at 24 V? I don't have any info
tigrot Well-Known Member Licensed User Longtime User Aug 8, 2019 #15 Connection 5 is X4 input of PLC? Upvote 0
tigrot Well-Known Member Licensed User Longtime User Aug 8, 2019 #16 Did you connect S/S pin according use? Seems quite important for input handling, according user's manual of plc. Upvote 0
Did you connect S/S pin according use? Seems quite important for input handling, according user's manual of plc.
Tayfur Well-Known Member Licensed User Longtime User Aug 19, 2019 #17 tigrot said: Use an external source. The device should not sink more than 3mA at 24 V. Is sensor able to work at 24 V? I don't have any info Click to expand... sorry my late anser. (national holiday) I tried External power source. its not changed. Sensors : DC10...30V Ia:200mA Upvote 0
tigrot said: Use an external source. The device should not sink more than 3mA at 24 V. Is sensor able to work at 24 V? I don't have any info Click to expand... sorry my late anser. (national holiday) I tried External power source. its not changed. Sensors : DC10...30V Ia:200mA
Tayfur Well-Known Member Licensed User Longtime User Aug 19, 2019 #18 tigrot said: Connection 5 is X4 input of PLC? Click to expand... Yes. PLC connected with X4 Upvote 0
Tayfur Well-Known Member Licensed User Longtime User Aug 19, 2019 #19 Yes. We cheked. İts (S/S) connectted directly 24V on PLC Thank you for Helps @tigrot Upvote 0
tigrot Well-Known Member Licensed User Longtime User Aug 19, 2019 #20 Hi. What happens if you disconnect 1? And 5? Upvote 0