M170 Wiring

Discussion and Support for MoTeC's M1 series ECUs

M170 Wiring

Postby 951driver on Fri Feb 14, 2020 9:32 am

Am I correct in understanding that the battery pins are on a connected bus, but that the sensor A and B busses are not connected? And if that’s the case, I presume sensors must be on the same bus, both 5v and 0v?
Thanks for helping a noob!
Julian Allen
Tennessee, USA
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Re: M170 Wiring

Postby SDean on Fri Feb 14, 2020 10:43 am

Hi Julian,

It is recommended that the sensors are wired to the same 5V+ and 0V rails, as this allows for the M1 to apply a ratiometric correction to the signal if the the 5V+ rail is pulled down or the 0V rail is pulled up. The AT pins are internally connected to their respective 5V+ rails through a 1K pullup resistor internally, so they need to be wired to the correct 0V rail, this is specified in the Package Help under Sensor Voltage Reference.
Stephen Dean
MoTeC Research Centre Melbourne, Australia
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Re: M170 Wiring

Postby jallenmd on Sat Feb 15, 2020 12:21 pm

Thanks for the assistance!
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