Multiple MGS1600GY Powered with Multiple SDC2160

1 month 5 days ago #29535122 by Chris_ENG
We're working on an application where two SDC2160 motor controllers networked over RoboCAN receives input into the master motor controller from x4 MGS1600GY magnetic sensors.

We tried to power all four of these sensors from the master motor controller, but found that the SDC2160 could only power three before running into issues. If we unplugged any one sensor or plugged any one sensor into a laptop (so it was also powered by the laptop) the system would work as intended.

My question is, since we have two motor controllers, can we wire the 5V power supplies and grounds respectively from each motor controller in parallel to get the current requirements needed?

Both motor controllers draw 24V power from the same power source.

If not, should we look at powering the magnetic sensors separately, and if they are powered separately, can we still connect their MultiPWM outputs directly to the master motor controller's PWM Inputs?
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1 month 4 days ago #29535123 by Athanasios
Hi Chris,
from the datashees I see that 
1 the consumption of the sensor at 5V is around 120mA
2 the max current that the 5V of the controller can provide is 100mA  
So more than one sensor is not advisable 
What you can do is use the 24V to supply everything.
Connect the PWM to the Dsub. This should work.
Try to use short cables.
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1 month 4 days ago #29535127 by Chris_ENG
Thank you for the help!

So just to be clear, all I need to do is wire the Vin and Ground on the MGS1600GY sensors to the 24V power supply, wire the MultiPWM outputs for each sensor to the main SDC2160 Motor Controller's inputs, and nothing else?

Basically, I just want to make sure I don't need to wire Ground between the sensors and the motor controllers on the DSUB for the motor controllers to read the MultiPWM or something like that.

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1 month 4 days ago #29535128 by Athanasios
You do not need to ground at t he Dsub because it is already done internaly.
all you have to do is what you described
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