On Wednesday, October 30, 2019 at 12:53:20 AM UTC-4, John Robertson wrote:
On 2019/10/29 7:29 p.m., wrote:
When switched on it bleeps an error 7 code. I can find nothing technical online about it at all. It's a Rio 4 (sold under several other names, the only other one I can remember being Mercury) with a 'pg drives technology' "s drive" OR "s-drive" controller - for which no search hits.

Clues: the bleeping has been intermittent. Operating the motor disengage switch often sorted it, but no longer does. The electric friction brake has been operating inconsistently.

Checks: testing the connectors that plug into the controller /i consistently get a 50 ohm load that can only be the friction brake, so that looks ok. I can't tell how the motor disengage switch is wired up. The back end should come apart for access to motor, brake & disengage switch but it seems to be seized, making access there a mare. I've noticed that it will work once every large number of times.

I don't understand the controller at all, other than it's obviously an H bridge driver. I looked for cracked joints to the termminals, no problem found there.

Where can I go from here? I'd check the disengage switch next if I could get to it, but I can't.


NT


Manufacturers tech support via email/web site?

John

He can try, but I've found out over the years that manufacturers almost never divulge any information.

Early this summer I repaired an AC inverter module for a solar array for an old customer (and he asked nicely). The inverter is an $800 dollar item but when I contacted the manufacturer for a schematic, the engineer told me it was "proprietary". I told him AC inverters are not a unique product and all the ICs in the inverter were off the shelf sourced, but it fell on deaf ears. Fortunately, this one was stone dead and using the suggested circuits from the IC data sheets found on line, I was able to find the problem in a DC-DC circuit.

I would be very surprised if the scooter manufacturer offered anything but a rebate or exchange program.