PSXX Manual Rev: A Software Rev: F
1
*Designed by Larry Maier
*Developed by DCC Specialties
*US Patent 7,810,435
For DCC Use Only
New!
Advanced Circuit Design
New!
Current Limiting
New!
Automatic Timing Delay
New!
Block Occupied Functions
The PSXX Circuit Breaker uses a new advanced design to provide a new level of over-current
protection for your layout. Before the advent of the PSXX, all circuit breakers used a simple
low resistance switch to turn off the current if it exceeded a set value. The layout is protected,
but for the time between the onset of the short and the output switch turning off, the fault is
connected directly across the booster terminals affecting all blocks connected to the booster.
The booster will supply up to its maximum current trying to maintain the track voltage.
Currents as high as 48 amperes can result, depending on your booster and wiring. The large
current draw then means there is no current left for any other block even if they are protected
by their own circuit breakers.
The PSXX series is a product of years of research into problems dealing with false overloads
that cause premature shut down of DCC Boosters and other Circuit Breakers. These false
overloads are caused by large capacitors used in sound systems, decoders and lighted
passenger cars. The overload appears as a short circuit until the capacitors are charged. The
PSXX Series determines if the load is a true short or just an overload due to a discharged
capacitor.
PSXX Versions Available:
PSXX-1, PSXX-2 & PSXX-3
●
Advanced Circuit Design
limits current to selected current value before circuit opens
regardless of severity of fault
●
Current Limiting
will charge sound decoders without exceeding booster current capability
●
Default Current Limit/Trip Current 2 amperes
will work correctly for most layouts.
●
Select Trip current
values 1 – 10 in integer steps (1, 2, 3, …., 10) using CV 49
●
Jumper Select Current
limits of 1, 2, 3, or 4 amperes
●
PSXX circuit boards are perforated with score lines
so you can physically separate and
divide PSXX-2, & PSXX-3 into individual PSXX-1 units if needed.
●
Power On/Off by DCC:
Turn on/off output track power with your DCC Throttle!
The PSXX-1,2,3 Series
DCC Circuit Breaker
Intelligent, Solid State
Block Detection and Network Feed Back
Manual Rev A [01.22, Software Rev F [07.22]
