Phaserunner cutting out.

[ferret]

I posted this question on the Phaserunner thread, but since it is located in the Items for Sale section, I reposted here in the Technical section, hoping more user will see it.

I have an issue with my V1 Phaserunner.
It is cutting out after a few minutes of high load. Phaserunner suddenly stops, not a gradual rollback. After some time, it starts working again (but continues to shut down when loaded). Seems to be a thermal issue, but it never happened previously when riding in high temperatures.
I saw in V2's description that:
"...switch to a lower durometer potting resin that would put less thermal stresses on the components."

Could the V1 resin be related to the problem?

Any ideas how to troubleshoot?

Thanks,
Avner.

 

[goatman]

id check the mosfet screws on the heatsink. on the v2 i took apart, those screws go into plastic threads not metal, be very gentle on the torque

 

[E-HP]

I've seen a post or two on the V1 thermal cutout, and custom heatsinks. How many amps are you seeing?

 

[ferret]

id check the mosfet screws on the heatsink. on the v2 i took apart, those screws go into plastic threads not metal, be very gentle on the torque

Thanks Goatman, I'll check them out.

I've seen a post or two on the V1 thermal cutout, and custom heatsinks. How many amps are you seeing?

E-HP, I don't think the issue is a software initiated thermal cutout because the controller cuts out sharply, not reduces power gradually. It's configured to max battery amps and max phase amps and never had cutouts before (I've had cutouts because of motor temperatures (initiated by Cycle Analyst) but never controller initiated cutouts).

Avner.

 

[E-HP]

Here's one of the posts I saw. I don't think in the thread that it's thermal rollback. It seems to cut out when getting hot.

https://endless-sphere.com/forums/viewtopic.php?f=3&t=82196

I think Justin said, 70A with a heat sink, 50A without, continuous.

 

[ferret]

Reached out to Green Technologies and got this info from Peter, it may be helpful for someone else with this issue:

"This will be a tricky one. I've encountered PRs which would lose their 5V bus when hot, if this is the case with yours there is no remedy aside from improved heatsinking to keep it cooler.

Confirm my suspicion by observing the PR led, if it goes dim, or shuts off entirely, during the outage the speaks to the 5V issue. If the light instead begins flashing a code, make note of the pattern and we will find the corresponding fault code in the manual."

Avner.

 

[E-HP]

Reached out to Green Technologies and got this info from Peter, it may be helpful for someone else with this issue:

"This will be a tricky one. I've encountered PRs which would lose their 5V bus when hot, if this is the case with yours there is no remedy aside from improved heatsinking to keep it cooler.

Confirm my suspicion by observing the PR led, if it goes dim, or shuts off entirely, during the outage the speaks to the 5V issue. If the light instead begins flashing a code, make note of the pattern and we will find the corresponding fault code in the manual."

Avner.

Are you replacing it, or adding a heat sink?

 

[ZeroEm]

Would like to know the out come of this.

by ferret » Sep 03 2021 3:44am

Reached out to Green Technologies and got this info from Peter, it may be helpful for someone else with this issue:

"This will be a tricky one. I've encountered PRs which would lose their 5V bus when hot, if this is the case with yours there is no remedy aside from improved heatsinking to keep it cooler.

Confirm my suspicion by observing the PR led, if it goes dim, or shuts off entirely, during the outage the speaks to the 5V issue. If the light instead begins flashing a code, make note of the pattern and we will find the corresponding fault code in the manual."

Avner.