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Chapter 16: Load Controllers
Load Cell Connection
Wiring of the load cell (including pressure sensor style)
Only input channel 5 can be used as Torque input from a load cell (preset in software when ‘brake’ type dyno is
selected). If the input is greater than 5V then set the voltage range switch to 0-15V.
Load cells produce only tiny voltage changes so will need an additional amplifier (transmitter) to create a usable voltage
output.
The sensor must be calibrated properly and this is done via the guided menu steps that will be shown later that assist in
adjusting the load cell amplifier.
Note: If a hydraulic load cell with pressure sensor is used, this will connect into Channel 5 of DYNertia3 in place of the
load cell amplifier output. This will require a manual setup as there is no amplifier to adjust so the guided calibration will
not be of value.
For manual setup please see ‘brake dyno setup’ in the main DYNertia3 manual and check the settings in the ‘Setup’
menu under ‘Sensor Configuration’ in the main manual.
Please refer to the manual of your Load Cell amplifier and Load cell for details on colours and connections.
Note: With a DTec load cell amplifier use the “V Out filtered” output connection to connect to DYNertia3
Load cell to amplifier connections will depend on your chosen load cell and amplifier. Generally the following is a guide:
Red = excitation +ve, Black = excitation –ve
Green = signal +ve, White = signal –ve
Tip- If you wish to reverse the operation of the load cell (perhaps you will operate brake system in the reverse
direction) then you can wire in a simple switch to reverse either the load cells excitation wires or output signal wires.
Note: Applying load to the sensor in the operating direction should make the load cell amplifiers output voltage rise!
‘V Out filtered’
from amplifier
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