Rx45b-22 Instructions (v520)


PRODUCT: Rx45b
PROGRAMMING: v520


Outputs

Tx21

Tx22

1. DEFAULT SETUP

- Train with center off motor control intended for Tx21/Tx22.

- The 'direction' switch can control 4 lights or on/off functions and a servo.
- The 'bind' button can operate 2 lights and a servo.
- For the Rx to work the Selecta switch has to be in the position learned during binding.

- All settings can be customised / re-configured.

Output Type Channel Other
H1: Motor 'center off' control Ch1 'speed' knob 130Hz PWM frequency
0.5A max stall current

F1: On/Off light or buzzer Ch3 'direction' switch Tx21: Right=On
Tx22: Up=On
Led needs current limiting resistor

F2: On/Off light or buzzer Ch3 'direction' switch Tx21: Left=On
Tx22: Down=On
Led needs current limiting resistor

P1: On/Off light (front) Ch3 'direction' switch Tx21: Right=On
Tx22: Up=On
P1 is also set up as 'LED2'
Led needs current limiting resistor

P2: On/Off light (rear) Ch3 'direction' switch Tx21: Left=On
Tx22: Down=On
Led needs current limiting resistor

P3: Servo

Ch3 'direction' switch
P4: Servo Ch5 'bind' button

P5: On/Off light Ch5 'bind' button

Press for on
Led needs current limiting resistor

P6: On/Off light Ch5 'bind' button

Press for on
Led needs current limiting resistor

Selecta

Enabled

Ch2 Up to 12 locos can be associated with Selecta switch on Tx22
Outputs 'hold' their settings when deselected and rx led/LED2 displays 2-flash

Arming/Activation: Mid-stick to enable Ch1
LVC Mid-stick to acknowledge
Ch1 5-flash if triggered
LED2 External LED P1 Shows useful receiver activity


2. EXAMPLE CONNECTIONS:


Rx45b

2-way Motor (H1)

'Single' Actuator (H1)

F1 + F2 + ADD1
for extra H output

1-way Motor (F1)

Led (F2)

Led (P4)

Servo (P4)

The above images are for Rx45a. Connections are the same for Rx45b but the Motor (H1) and Positive (+) are in different positions.

LEDs with 1S Lipo:
Led's driven from P outputs only require a current limiting resistor (8mA max).
Led's driven from F outputs only require a current limiting resistor (2A max).

LEDs with 5-6v:
'P' outputs are 3v when 'off' and 0v when 'on'. So when used with higher voltages, the leds driven from P outputs also need diodes to reduce the voltage. This is because 5 or 6v is high enough above the 3v output to make Leds conduct even when P outputs are 'off'. An example is shown in the Led (P4) diagram.
Led's driven from F outputs only require a current limiting resistor when operated off any voltage up to 6v.

GRAIN of WHEAT:
Grain of Wheat bulbs usually draw >8mA so are not suitable for use with P outputs (unless buffered with a transistor).
Grain of Wheat bulbs can be driven from F outputs. F outputs allow the intensity to be varied with stick movement or 'Travel Adjust'.



3. CHANGING OUTPUTS:

All outputs can be customised / re-configured:

PROGRAMMING




4. GENERAL:
The Rx is not insulated.
The PCB is thin so do not bend it.

5. LED:
Led On = perfect reception (real-time indicator).
1 flash = Scanning (~2sec between flashes; wrong model if never stops).
2 flash = Selecta (model not active).
5 flash = Brownout (receiver voltage went too low; check battery/servo load).

6. FAILSAFE:
Outputs are not driven (do nothing) on startup and while scanning.
Outputs 'hold' on short signal losses (<3sec) and then do nothing (>3s).



7. BINDING:
1. Switch Rx on and wait ~20s until led flickers fast.
2. Switch Tx on in bind mode and Rx led should flash slowly and then go solid.
3. Change distance between Tx/Rx if binding does not work.



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