PSXX Manual Rev: A Software Rev: F
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J2
– DCC track power output terminal from the PSXX circuit breaker to the track.
JP1
– Programming & Operation jumper. Normal operating configuration is when the
jumper is in the JP1-2 to JP1-3 position. Place the jumper in the JP1-1 to JP1-2 position
to enter programming mode.
J4-1 and J4-2
are the inputs for the photocell detector used for the stopping function
and/or the block occupancy function. Note:
●
Be sure there is sufficient light above the cell to trigger the circuit.
●
You can use a white LED to illuminate the photocell.
●
Whenever you arm the photocell, it assumes it is uncovered and adjusts its
sensitivity to the current lighting conditions.
●
It is sensitive across the light spectrum. White will be best.
●
The photocell sensitivity is calibrated to the local light intensity each time the
photocell is armed.
●
You can order the photocell sensor through Tony’s Train Exchange.
J4-3 [-] and J4-4 [+]
are connected together [up to 5 mA] when the breaker has detected
a short circuit and open during normal operation. This is an optically isolated open
collector transistor and provides no power.
J4-5 [-] and J4-6 [+]
are open if the block is not occupied and are connected together
[up to 5 mA] if the block is occupied. This is an optically isolated open collector transistor
and provides no power.
J5-1 [+] and J5-2 [-]
are for a remote status LED. The LED is connected directly to the
terminals. J5-1 and J5-2 have resistors installed on the board that limit the current to
about 5mA (780 ohms)No resistor is required. The remote LED will duplicate the state
of D6.
J5-3 [+] and J5-4 [-]
are for network power status reporting. They are connected
together [up to 5 mA] when the PSXX output switch is ON. This is an optically isolated
open collector transistor and provides no power.
J6
– Sets the current trip level. When CV49=00 [default] the trip current is 2.0 amperes
if no jumpers are installed. This is the correct setting for the NCE Power Cab. If J6-2 is
connected to J6-1 and J6-4 to J6-3 is open, then the current trip is 1.0 amperes. If J6-4
is connected to J6-3 and J6-2 to J6-1 is open, then the current trip is 3.0 amperes. If J6-
4 is connected to J6-3 and J6-2 is connected to J6-1, then the current trip is 4.0 amperes.
J7-1 and J7-2
are available for powering external LEDs, etc in conjunction with Block
Occupied or Block Shorted outputs. Maximum load should be less than 25mA. J7-1 is
the 5v output and J7-2 is the GND Return connection for the J7-1 5V output
J7-4 to J7-3
are the auto/manual reset inputs. If the connections are open, the breaker
will automatically try to reset every two seconds [default]. If the terminals are connected
together with a SPST toggle switch or N/C push button switch, then the breaker will
remain off after a short until the connection from J7-1 to J7-2 is momentarily opened or
an accessory ON command is sent to the PSXX on-off accessory address [see Section
B item 13].
