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MRLA Manual Mtroniks Ltd. July 2019
In order for the MRLA to be controllable, all radio channels to be used must conform to the below behaviour;
•
When the radio channel is centred, the MRLA’s Signal Tester LED will light constant Amber. As the
channel is moved positively, the LED will begin flashing Green, at the extreme of that movement, the
Green LED will become constant. In the chann
el’s negative direction, the LED will behave that same
way, but showing Red.
•
The radio channel may operate in the opposite direction to described above, if so, it is the user’s
choice as to whether to reverse that operation as detailed in the radio system’
s instructions.
•
If the LED does not light constant Amber when centred, the channel may need an adjustment, or
‘trim’.
•
If the channel does not reach the constant Red/Green state as described above, the channel’s ‘high
point’ adjustment may need altering. This should be detailed in the radio system’s instructions.
It is essential for the above conditions to be met for the MRLA to properly control the ACI/DCI unit.
4.
Power-down the system.
5.
Repeat the above procedure completely for each channel of the radio system that is to be used.
Power must be removed from the MRLA to cause it to leave Servo Tester mode.
Normal Operation
Once everything is connected properly and the radio system is set up properly, normal operation can
commence.
Switch on your transmitter, with fully charged batteries before activating the main ACI/DCI power unit. It is
best to switch on the transmitter with all its controls centred.
The MRLA starts up in a safety lock-out mode, flashing its Operation LED from Red to Green repeatedly. To
leave this mode and begin normal operation, the transmitter’s Throttle control must go through this
procedure: Centre to full negative, THREE times, then back to centre. A procedure like this is essential to
prevent accidental activation of the loco. Also, when in normal operation, this same procedure is used to put
the MRLA into a safe, de-activated state.
The throttle control when moved positively causes the ACI/DCI to power the motors. When used negatively,
the ACI/DCI will brake the motors.
