bus is less than 2 feet. Use of a smaller bus will prevent the
booster from detecting a short circuit and may be a fire
hazard.
The voltage to the track is dependent on the power source
input voltage as discussed below. The DCC track voltage
can be changed from 13.8 to 12 Volts by setting the switch
on the power supply for N, HO and some S Scales. We offer
a 9 Volt power source for Z Scale. Please call us at 585-265-
0230 for a replacement. We do not recommend using a 5
Amp booster with O-Scale as most O-Scale locomotives
have stall currents in the area of 8 Amps (Weaver, Red
Caboose, P&D). For O-Scale usage we recommend our
PB110 ten Amp power booster.
CONTROL BUS SOCKETS
The control bus sockets on the front of the PB5 are paired to
allow wiring the control signal coming from the command
station to “daisy chain” through the booster.
Use the supplied 7 foot cable to connect the PB5 to your
command station’s CONTROL BUS socket. The remaining
(unused) socket on the PB5 can be used to connect to other
Boosters in daisy chain fashion. Use only the 4-wire RJ-H
cable for this purpose. Longer cables may be used if more
distance is needed between power stations. The last power
station at the end of the daisy chain will have one empty
socket. The PB5 will place a nominal 6mA load on the
command station control bus.
STATUS LIGHT
Page 3
TRACK
STATUS POWER
18VDC MAX.
PB5
FIVE AMP POWER BOOSTER
CONTROL BUS
POWER PRO
From Command Station
7 foot Cable
To other Power Boosters
This light will illuminate light steadily under normal
operations. Flashing indicates an abnormal or fault condition.
Here is a description of the various conditions indicated by
the status light.
Steady on - Track power is on and operations are
normal.
Rapid flash - No DCC signal from command station
(control bus cable is unplugged, programming track in
use, etc.)
Slow flash - Short circuit in the layout wiring, the layout
track or in a locomotive.
POWER SOCKET:
Input power from the outside power supply goes into the
PB5 via the round socket. Use ONLY the NCE supplied
P514 power supply.
TRACK VOLTAGE ADJUSTMENT
The track voltage can be changed between 12 Volts and
13.8 Volts by setting the switch on the P514 power supply.
CONNECTING THE PB5 TO OTHER SYSTEMS
WIRING TO A LENZ COMMAND STATION
This wiring diagram is provided for the operators that wish to
add an NCE power booster to their existing LENZ system.
Lenz does not provide a ground point.
Page 4
Red
Green
Cut off black wire
Cut off yellow wire
6 position RJ-12
connector
Supplied 4 position
RJ-H cable
Connection from Digitrax command station to NCE boosters
Blue
White
Yel
Grn
Red
Blk
NOTE: Connect one of the NCE booster cover screws to the ground connection of other boosters in the system
Connect to NCE booster
"Control Bus" jack
Connect to Digitrax
LocoNet jack
Splice wires