MoTeC CDL3 - Manual (Page 23)

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 refer to Input Characteristics
Expanders
If additional sensors are required, input expanders can be used, such as
MoTeC’s 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.
Communications
Communications are used to send and receive data from one device to
another. There are two communication protocols: RS232 and CAN. Generally
older devices use RS232 and newer devices use CAN.