Haltech E6X Manual Win Version - Manual (Page 155)

E6X Manual
155
Checking the Sensor
If you need to check that the Haltech Hall Effect sensor is operating correctly, then this can be
done easily with the use of a multimeter, a magnet and a 1000-Ohm resistor. By powering up
the sensor, using 12 volts (PIN F) and ground (PIN A), and connecting a 1K Ohm resistor
between 12 volts (PIN F) and the Trigger channel (PIN B) and also between 12 volts (PIN F)
and the Home channel (PIN E), so we can be checked to confirm correct operation.
12V
Trigger
1k Ohm
Resistor
Multimeter
Home
Haltech
Hall-Effect
Sensor
Pin E
Pin B
Pin F
Ground
Pin A
1k Ohm
Resistor
Connecting the multimeter between PIN B and ground, 12 volts should be present. When
either magnet face is placed in front of the sensor this value should go to 0 volts.
To test the Home output channel, connect the multimeter between PIN E and ground, 12 volts
should be present. When the South magnet face is placed in front of the sensor this value
should go to 0 volts.
Fitting the magnets
We insist that only Haltech rare earth magnets (part number REM1) be used for the purpose
of triggering the sensor. Rare earth magnets purchased from your local electronics store may
be less expensive but they are not good enough! Haltech rare earth magnets are strong with
good stability to reasonably high temperatures and which have a long service life. Some rare
earth magnets are stronger but break down under excessive temperature, or are too brittle for
the purpose, or do not have a long service life. Ordinary magnets ie not rare earth types, may
not have the strength required for satisfactory triggering at high speeds.
Haltech REM1 rare earth magnets are normally 5mm dia x 2mm depth, although other sizes
are available upon special order.
The magnets should be fitted in non-ferrous surrounds such as aluminium, stainless steel or
titanium. The trigger wheel is normally made of the chosen material but various users have
reported good results when the magnets are set in a suitable non-ferrous surround and the
surround is set into a ferrous material.
The magnets should be set flush with or slightly back from the surface of the trigger wheel or
surround. If set too far back the magnetic signal may be too weak. The magnets should be set