chuyskywalker
10 kW
I'm trying to make sure I've got the right understanding before I drop some cash.
I'm building up a 72v based bike and would like to add a PAS sensor. Right now, I'm happy to try out the "lower end" cadence sensor from Grin. Maybe in the future I'll consider a torque spindle, but I don't think I need that for now.
Reading up on things, however, the manual states:
From what I've gathered in other threads, I understand that the dc/dc into the CA just gets overworked pulling 72 (really, 84v) down to 10v and can cause it to fail. Pulling up the un/official guide shows that at 84, there's only 10ma and a PAS alone could potentially pull that -- no bueno.
In this other post, it's alluded that if you have a 12v system in place (I've got a 90v->12v dc/dc that can handle 26A for accessories), you can instead just power it directly, instead of from the CA.
So; should I buy the PAS above, I would need to remove the +10v pin from the connector and wire it into my 12v dc instead, right?
The device doesn't claim to accept 12v (instead 5-10v), so would I need to add another step down?
I'm building up a 72v based bike and would like to add a PAS sensor. Right now, I'm happy to try out the "lower end" cadence sensor from Grin. Maybe in the future I'll consider a torque spindle, but I don't think I need that for now.
Reading up on things, however, the manual states:
PAS and torque sensors are only compatible with battery voltages lower than 52V nominal when the Cycle Analyst is providing power for the device. Connecting a PAS or torque sensor to the CA3 above 52V nominal voltage may cause damage.
From what I've gathered in other threads, I understand that the dc/dc into the CA just gets overworked pulling 72 (really, 84v) down to 10v and can cause it to fail. Pulling up the un/official guide shows that at 84, there's only 10ma and a PAS alone could potentially pull that -- no bueno.
In this other post, it's alluded that if you have a 12v system in place (I've got a 90v->12v dc/dc that can handle 26A for accessories), you can instead just power it directly, instead of from the CA.
So; should I buy the PAS above, I would need to remove the +10v pin from the connector and wire it into my 12v dc instead, right?
The device doesn't claim to accept 12v (instead 5-10v), so would I need to add another step down?