McHale Fusion 2 electronic control system section
11- 10
McHale Fusion 2 round baler wrapper technical service manual
Issue 1: 0208
11.2.11: Film monitoring — operation
Function
Film sensor monitoring can be switched on or off from the operator
set-up menu on the control box.
The film monitoring circuit consists of a pair of dispenser mounted
radio transmitters, one Even code and one Odd code, sending signals
to a machine mounted receiver which decodes the signals and
passes film status information to the control box.
The transmitters are a sealed battery powered unit with a 5 year
battery life which transmit a code when a magnet on the dispenser
gear passes over them. Each transmitter has a unique code which
must be taught to the receiver, this means that two Fusion machines
can operate in the same field without mutual interference.
One odd code (O) and one even (E) code transmitter must be fitted.
The receiver decodes the signals and sends a high frequency ( 1100
Hz) to the control box when both dispensers are feeding film, a low
frequency ( 550 Hz) when only one dispenser is feeding film and no
signal when pulses are absent.
If one dispenser stops feeding film the control box displays ‘1
Dispenser Only’ and switches to 50/50 mode where the bypass valve
is switched on and off every half rotation, bypassing oil around the
bale rotation motors, effectively wrapping the bale with one film roll.
If film pulses are absent the control box displays ‘Out of Film symbol’
and brings the dispensers to a halt in the loading position where film
can be loaded and wrapping resumed.
Testing
Transmitters
With the control box switched on, and hydraulic oil off and access
door open, rotating either dispenser roller should cause the receiver
Light Emitting Diode to flash.
If the LED does not flash an attempt to teach the codes to the
receiver should be tried and the dispenser gear magnets should be
inspected.
Receiver
There are no serviceable parts inside the receiver, it’s 12 Volt supply
can be checked but flashing of the LED on power up will show that it
is getting a supply. The film signal can be monitored from the Input/
Output test menu, see Input/Output test section 11.8.
Blue = ground, brown = 12V, green/yellow = signal
Teaching
This is detailed in the section on film sensor replacing (next page).
E
O
LED
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