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Chapter 16: Load Controllers
PWM Current Load Controller Wiring
Wiring PWM controller wiring (basic- no accessories)
Power the Load control unit from a separate 12VDC power supply, separate, not the vehicles. It then in-turn supplies the
DYNertia3 control unit with power.
A spare battery is ideal or a mains adapter that can deliver > 500mA, if you plan on running an AFR meter from the
same supply then you will need >3A.
Low supply voltage can cause poor operation of the Load control unit and therefore the brake.
If you use a battery for supply then do not use a battery charger connect whilst you operate, being connected can effect
operation.
WARNING: The PWM output has maximum ‘sink’ or ‘source’ current of 30mA, it must be used to drive the brake load
via suitable interface circuitry, and this is the customer’s responsibility to acquire/design so as to prevent damage to the
DTec Load controller unit. ‘Flyback’ (back EMF) protection must also be incorporated into your design, YOU HAVE
BEEN WARNED!
KEY POINTS- Provide suitable circuitry for PWM to drive your brake load (<30mA current draw and include ‘Flyback’
protection), keep the wiring simple initially.
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