开云体育

DR4088CS | Max distance from Track/Feeder

Heath @ Human[c]ity Junction All Messages By This Member #3692 Hello, Is there a max distance for optimal detection when using a DR4088CS? I have three areas where the DR4088CS are all within 3-4' of the planned track/feeder locations. But there is one location where the track/feeders will be around 6'-8' from the DR4088CS. Any recommendation on the wiring to reduce any issues with detection?? I am planning 22awg wire from the track to the DR4088CS. I will install the DR4088CS in the center of each section to keep wiring as short as possible. There are two sides on a DR4088CS, 1-8 and 9-16. Should I wire the longest sections to one side and the shortest sections to the other side? Or am I within a distance that will not matter? Any tips/pointer would be appreciated. Thanks -- Heath @ Human[c]ity
Iain Morrison All Messages By This Member #3693 开云体育 Experience with several layouts (and commonly reported here) is that 22awg which is the same CSA as 7/0.2 (which ?is what we would use in Europe) wire will cause phantom occupancy with a DR4088 if the feedback wires are close together and/or with long runs. The cure is to use shunt resistors of ~500Ω between the feedback terminal on the DR4088 and the C terminal for that feedback, or use heavier gauge wire with better insulation. ? toggle quoted message Show quoted text From: [email protected] <[email protected]> On Behalf Of Human[c]ity Junction Sent: Saturday, September 9, 2023 6:00 AM To: [email protected] Subject: YaMoRC, Digikeijs, JMRI, English DR4088CS \| Max distance from Track/Feeder ? Hello, Is there a max distance for optimal detection when using a DR4088CS? I have three areas where the DR4088CS are all within 3-4' of the planned track/feeder locations. But there is one location where the track/feeders will be around 6'-8' from the DR4088CS. Any recommendation on the wiring to reduce any issues with detection?? I am planning 22awg wire from the track to the DR4088CS. I will install the DR4088CS in the center of each section to keep wiring as short as possible. There are two sides on a DR4088CS, 1-8 and 9-16. Should I wire the longest sections to one side and the shortest sections to the other side? Or am I within a distance that will not matter? Any tips/pointer would be appreciated. Thanks -- Heath @ Human[c]ity
Heath @ Human[c]ity Junction All Messages By This Member #3694 Edited Iain, Should I just add a 500 ohm resistor to every output as a precaution against issues. What wattage resistor should I use? [edit: I just found the photos from Ryan showing a .5 watt resistor at 470 ohm. So I will start there with a similar setup and see how it goes.] Aside, I am planning to add a MQTT Relay to each output of the DR4088 to control the track power for each output. I am very. curious whether this is going to mess up the detection. I am planning to use these, Thanks -- Heath -- Heath @ Human[c]ity ( ) ( )
Iain Morrison All Messages By This Member #3695 I have just used the ones I have had lying around when helping people, I think that they would be 470 ohms and 1/2 watt. Many Thanks Iain Morrison toggle quoted message Show quoted text On Sat, 9 Sep 2023 at 13:48, Human[c]ity Junction <heath@...> wrote: Ian, Should I just add a 500 ohm resistor to every output as a precaution against issues. What wattage resistor should I use? Thanks -- Heath -- Heath @ Human[c]ity ( ) ( )

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