Is 18 VAC too much for ASC2 relay power?

I ask because my ASC2 relay and switch power currently come from the same source and I found that the Z1000 machines on Ross tinplate turnouts need 18 volts to throw consistently.  I presume that the ASC2s regulate their internal power and should be able to handle a range of relay power voltages.

Original Post

When I first read the OP I was surprised to read he needed 18 volts for the DZ-1000 machines when my DZ-1000s worked off the 14 volt fixed on a Z-1000 brick.  Then I reread it and realized he was talking about a tinplate switch.  Those switches (RossPlate) must have a lot more friction compared to the premiere or super lines.

Anyway, I believe each individual relay in the ASC2 is rated to 20 amps, so it should be able to handle even the higher voltages of the Z-4000 and post war transformers.  As John stated, 18 volts would be no problem.

Ron

 

TCA, TTOS, NCT, LCCA, PRRT&HS

 

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I just bought an ACS2 but haven't tried it yet.  I was planning on using one of the unused throttles on an ZW-L but on page 14 of the ACS2 manual it says that it needs to be connected to an accessory transformer at 12-14 v, and the U terminal of that transformer can't be connected to the outside rail.  Sounds like I need another transformer.  I want to use the ACS2 to activate Atlas switches which Atlas says need 16-18 v.  Do you think it would be safe to use a PowerHouse brick as the accessory transformer?

JFC454(?),

You need to attach two different accessory transformers to the ASC2.  The first one, set between 12-14 volts, powers only the ASC2 and is connected to the "AC Power" connections per page 14, Figure 9.  I use the accessory output of a MTH Z-1000 brick for this (14 VAC).

A second transformer is needed to power the accessory or switch, with the ASC2 basically acting as an on/off switch in the accessory/switch circuit.  Here the transformer is connected to the COMM input and goes out one of the switch output combinations (1T/1O, 2T/2O, 3T/3O, or 4T/4O).  This is shown on page 30, Figure 22, for Atlas switches.

The relays in the ASC2 that control the accessory/switch are rated at 20 amps, so there should be no problem with using a PH180 to power the switches.

Ron

 

TCA, TTOS, NCT, LCCA, PRRT&HS

 

Volunteers don't get paid, not because they are worthless, but because they are priceless!  Author Sherry Anderson

CAPPilot posted:

JFC454(?),

You need to attach two different accessory transformers to the ASC2.  The first one, set between 12-14 volts, powers only the ASC2 and is connected to the "AC Power" connections per page 14, Figure 9.  I use the accessory output of a MTH Z-1000 brick for this (14 VAC).

A second transformer is needed to power the accessory or switch, with the ASC2 basically acting as an on/off switch in the accessory/switch circuit.  Here the transformer is connected to the COMM input and goes out one of the switch output combinations (1T/1O, 2T/2O, 3T/3O, or 4T/4O).  This is shown on page 30, Figure 22, for Atlas switches.

The relays in the ASC2 that control the accessory/switch are rated at 20 amps, so there should be no problem with using a PH180 to power the switches.

Thank you for that information.  So that second transformer could be an unused throttle on a ZW-L instead of a PW180? 

JFC454 posted:

Thank you for that information.  So that second transformer could be an unused throttle on a ZW-L instead of a PW180? 

JFC454, Yes.  Plus the unused throttle on the ZW-L can adjusted to fine tune your DZ-1000s.

John, I still think 18 volts is a lot to operate a DZ-1000.  Maybe you need to check your RossPlate switches to make sure they are operating smoothly.

Ron

 

TCA, TTOS, NCT, LCCA, PRRT&HS

 

Volunteers don't get paid, not because they are worthless, but because they are priceless!  Author Sherry Anderson

TrackerJohn,

I suggest using 12-14 VAC for the relay power on the ASC2.  At 18VAC the relays will get quite warm.   I used a CW-80 for my layout, and the U terminals are all common.  I have seen no issues with the U terminals all tied together, and I think that is the best way to wire the system.  All the U terminals should connected, IMHO.

jon

-Trying to retire, haven't figured out how!

 

gunrunnerjohn posted:

A really dumb question Jon, why did they not allow this to run on normal transformer voltages?  I would have expected that the separate power would be a bit more flexible.

What is a normal transformer voltage?  Seems 12-14 VAC is normal, right?  I agree separate power is flexible, and the voltage can be set to 12-14VAC, in most transformers.   On my setup, I adjusted my accessory bus to that range and run a lot of my accessories off of the 12-14 VAC bus; which is about the best voltage in general for accessories; even command accessories, like the latest command culvert loader/un-loader....

jon

 

 

 

jon

-Trying to retire, haven't figured out how!

 

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