MoTeC C125 - Manual (Page 24)

MoTeC Installation 23
Speed Inputs
Speed Inputs are identical to Digital Inputs except that they can also be
configured to suit Variable Reluctance (Magnetic) sensors, such as some
wheel speed sensors. Because the amplitude of the signal from these
sensors changes with speed of rotation, variable trigger levels are
required, which must vary with the frequency of the input signal.
The Speed Inputs can also be used with Hall Effect type wheel speed
sensors.
The Pulse Width method measures the high time of the pulse rather than
the low time as measured by the Digital Inputs.
Input Specifications
For full specifications see Input Characteristics .
Expanders
If additional sensors are required, input expanders can be used, such as
MoTeC’s E816 and E888. Sensors can be connected to the expander inputs
and communicate via either RS232 or CAN. See
Configuring
Communications .
Outputs – Requires I/O Upgrade
Auxiliary Outputs are used to control various vehicle functions, for example:
o
Gear Change Lights
o
Warning Lights
o
Relays controlling Thermatic Fans and Pumps etc.
Note
: Devices that consume more than the maximum current (e.g. motors)
should be driven via a relay or a MoTeC PDM (Power Distribution Module).
Output Specifications
Full specifications can be found in Output Characteristics .
Expanders
If additional outputs are required, output expanders can be used, e.g. PDM.
Expander outputs can perform the same tasks as the device outputs and can
be driven by communication via either RS232 or CAN. See
Configuring
Communications .