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RailBoss Plus R/C - Hardware Specifications
Board Revision “B”
Mechanical
Physical Size: PCB – 2.9” X 1.9”, Max component height – 1.0”. Weight: 1.6 oz.
User Connections: Screw clamp terminal strips accept individual wires, 30 to 20 AWG.
Requires a 1/16” or 5/64” slotted screwdriver
Electrical
Power Input from battery pack (Terminals B+,B-)
7V min to 25V max
7-16 NiMh/NiCad cells (1.2V per cell), Nominal 8.4V to 19.2V
2-6 Lithium-Ion or Lithium-Polymer cells (3.7V per cell), Nominal 7.4V to 22.2V
Reverse polarity protection (prevents damage, but will not operate)
Power Consumption (due to board and receiver, no motor load)
Forward motor direction: 60 ma
Reverse motor direction: 130 ma
Motor Output (Terminals M+, M-)
5 amps max, continuous, over the full input voltage range (7-25V)
PWM (Pulse Width Modulated), 20 KHZ
Polarity reversal via relay contacts
Max amplitude: Battery voltage minus driver loss
Max voltage loss across driver: < 0.4V @ 1.0A, < 1.5V @ 5A
+5V output to Receiver (Terminals 1+,5-)
For use as shown in wiring diagram only. No other loads should be connected to this 5V supply.
Control Inputs
4 Receiver Data Inputs; Elevator/Direction, Throttle/Speed, Rudder/Momentum, Ailerons/Sound,
and Channel 5 toggle switch required for simultaneous two train operation.
Digital Proportional servo data from any standard hobby radio, 3V or 5V logic
Reed Switches, normally open, momentary close
Bell/Station stops, Terminal 4,9
Whistle, Terminal 6,9
Control Outputs
Sound Triggers: 4 open collector Darlington pairs. 200ma max each.
LED/Lamp Drivers: Max load = 200 ma
LED current source: Terminal 11 = 11 ma
Lamp voltage source: Terminal 10 = battery voltage at power input
Forward Lamp/LED-(open collector) Terminal 12
Reverse Lamp/LED-(open collector) Terminal 13
Radio Rx and Tx (not supplied by G-Scale Graphics)
Any 5-channel digital proportional radio system will probably work in general, but only those systems recom-
mended by G-Scale Graphics have been tested for 100% compatibility. See next page for specifics.
Battery Power Accessories (available from G-Scale Graphics)
Battery Conversion Module; (built-in Power on/off Sw, Charging Jack, 5A fuse, power distribution)
Power On/Off Switch: Sub-Miniature w/short handle, SPDT (On-On), 3A, 28 VDC
Charging Jack: 2.5mm I.D., 5.5mm O.D., 5A, w/switch (mating power plug: Radio Shack #274-1573
Warranty - 12 months from date of purchase. Post warranty repairs can be made for a modest fee.
