Switch8 Mk2& Button Board Issues
Hey everyone. I am wiring my control panels with six (6) NCE Switch8 Mark2/Button Boards in conjunction with SPST Switches and LED red/green lights and Tortoise Turnout Switches. I have been successfully running the SW8 on my Digitrax DCC system for over 6 months without a problem. In adding the Button Boards to have a manual switches on the control panels (I have 7 small panels distributed around the layout), however, I am having issues with the panels working consistently. Sometimes they work and sometimes they don't.
In order to reduce the power the SW8/BB is taking from the DCC Track Power, I have added a 12v 5a DC Power Supply to terminal block/wiring out to the various control panels and continue to experience the same issues. When hooking the 12v DC adaptor directly to one of the SW8 input, most of the time I have to move the DC/DCC switch on the SW8 from DC to DCC and back to DC for the switches to work (this is with no DCC power to the SW8 unit). It's almost like the unit forgets it is in DC mode.
I watched Larry Puckett's DCC Guy YouTube on the Switch8 / Button Board video and thought his suggestion of putting a separate power supply to the SW8 units to be a good idea and would take care of my issues. Unfortunately, it has not. Are there subtle wiring tricks I need to be aware of? Should a 12v 5a power supply be able to power all 6 SW8/BB units, as well as the 41 Tortoise Switch Machines and 82 led located on the various panels I have on the layout?
If you have installed the SW8/BB units to your control panels and have similar issues and have some suggestions on how I can eliminate the problem, I would appreciate hearing from you. Or if you just have suggestions or questions, please let me know. I am at a dead end and don't know where to go from here!
Dennis DeGroff, Fort Wayne, IN
You might ask the SW8/BB question on the NCE group but many of those same folks are also here.
Be sure to avoid long distance wires between the actual PBs and the Button Board. Those wires can be sensitive to noise pickup. Ditto between the BB and SW8.
Let us know what you find.
Hey Don. Thanks for the reply. I have been working with the NCE Techtoggle quoted messageShow quoted text
Support person in New York for a number of weeks and we have not been able
to eliminate the issues. I have signed up for the NCEDCC group and have put
the message out to them once I am approved by the moderator. I added some
more information on my wiring to that as noted below.
My wiring is with 22 gage wire for connecting the SW8 to the BB, from the
switches to the BB, and from the Tortoise Machines to the led's and SW8. My
longest run from the switches to the BB is around 6' and the SW8 and BB are
within 12" or less on all the SW8/BB combinations (I have twisted the wire
pairs from the switches to the BB). I have twisted the wire from the
terminal block connected to the 12v DC Power Supply out to the various SW8's
(one leg goes to 2 SW8/BB and the other leg goes to 4 SW8/BB. I have a
total of 41 Tortoise switches, 41 SPST switches, and 82 red/green led's
wired into the 6 SW8/BB's.
When applying the separate 12v 5a power supply to the SW8 and switching from
DCC mode to DC on the SW8, the switches do not work. If I move the switch
from DC to DCC and back to DC, then the switches work. Disconnecting the dc
power from the SW8 puts the control panel back to not working. Either
moving the SW8 switch or removing the dc adaptor from the SW8 and replacing
it into the socket, then the panel works. Should the SW8 remember its
status if power is removed? I can't believe a person has to switch the SW8
DC/DCC switch every time power is removed from the layout.
Any suggestions on this would be appreciated. Thanks for your help. Dennis
From: email@example.com <firstname.lastname@example.org> On Behalf Of Don Vollrath
Sent: Tuesday, November 5, 2019 9:11 AM
Subject: Re: [w4dccqa] Switch8 Mk2& Button Board Issues
You might ask the SW8/BB question on the NCE group but many of those same
folks are also here.
Be sure to avoid long distance wires between the actual PBs and the Button
Board. Those wires can be sensitive to noise pickup. Ditto between the BB
Let us know what you find.