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do not make a knot and then solder. This will prevent the
heatshrinks to go over the open piece of wire.
-
To nicely seal the open wires, heat the heatshrink with a heat
gun or carefully with a lighter, also shortly touching the heat
shrink with a soldering iron will do.
Do this for the Y and Z axes and try to follow the loops. The extruder
motor however needs extra care.
The loop must be small enough that the cable doesn't get stuck around
the far edge of the top beam, when the extruder is at its end position in x-
direction.
The rest of the cables which run to the extruder carriage need to follow
this just created loop.
10.6 Connect the rest of the wires
After connecting the motor wires the only wires left are the following:
-
Wires for the hot-end
-
The 3 fans
-
Power supply wire, power on/off wire
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10.6.1
Wires for the hot-end.
The supplied hot-end contains all the wiring. The pre-crimped wire need
elongation in order for it to reach the ramps electronics. It can be
elongated with the wires which were cut off for the motors. The power
resistor wires are long enough to directly connect to the ramps
electronics. Please check the schematics
10.6.2
The 3 fans
1.
The fan which is connected to the air duct underneath the extruder
motor needs to be connected to the ramps board. It is a switchable
fan and should be connected next to the heated bed power resistor
connection. Make sure the polarity is the same as in the schematics,
because otherwise the fan will be damaged/unusable.
2.
The fan which blows cool air to the top part of the hot-end is a non-
switchable fan and needs to be connected to a +5 Volt (dark red)
cable and a black cable directly from the power supply.. Again
watch the polarity, when wrongly connected the fan will be
damaged beyond repair.
Note: The fans are rated for 12V, but when connected to 12V it
makes a significant amount of noise. Since the cooling capacity at
5V is more than enough. Another benefit is that the fans make
virtually no sound at 5V
3.
The fan in the ramps electronics case, this is the same as the 2
It constantly blows cool air and therefore must be connected to a 5V
and a 0V cable of the power supply
10.6.3
Power supply wire, power on/off wire
Connect the green wire of the power supply with a black wire. This
is required to make the power supply turn on.
10.7 Clean it up.
nd
fan.
Page 37 of 65
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