I've found a couple posts with vaguely similar issues, but nothing specifically describing what I'm seeing. If someone can find a discussion of these symptoms somewhere, please redirect me. I wanted to try to see if I could figure this out without having to contact Grin directly, they've already been so much help, I will reach out to them pronto if no one here has ideas for me.
I'm working on a new build from Grin tech. I had a simple cheap motor setup about 10 years ago, but I'm essentially new to all of this.
Gmac 10t
CA3 WP
Baserunner L10
E rider Torque Sensing BB
UPP 52V 28Ah Li ion
tripwire installed and regen braking enabled.
I have read the manuals, zeroed the amps, and double checked all the PAS setup and PAS config screens that grin tech set before shipping. Everything looked correct to me there.
Human watts seems to be largely accurate until motor runs. It reads between 160-230 when I'm giving it some mustard.
If I turn the PAS on, then as the motor starts to engage, then the Human Watts reading goes haywire, jumping to 300, down to 160, flipping negative, and back, as the assistance tries to adjust to garbage input. On the diagnostics page, the W limit flag comes on as soon as I start pedaling, before I can even feel the motor kick in.
I get a similar effect if I use the thumb throttle, although the Human watts will flip as far as -800, back to positive, all over the place, but as long as the motor is in use, it tends towards negative territory, such that over her maiden 30 mile journey, CA showed a negative total and negative average HWatts.
However, on diagnostic page the W limiter does not activate when I use the throttle whether I'm pedaling or not (even when PAS is still turned on).
If I ride throttle without pedaling, the human watts reads 0.
Thanks for the help!
Ben
Info from setup screens to facilitate assistance:
Throttle mode: Thru
Power limits:
Plim 9900W
Wgain 15.0 (I could not find documentation on this number?)
PAS Setup:
homepage with no torque on pedals: V1.51 1.1 n/m responsive to stepping on pedals
Custom Trq 18 poles, 1 wire, 5V = FWD (Left pedal indicator activates for forward pedaling)
Trq scale = +70.0 Nm/v
Zero trq 1.49 (1.51) [changes appropriately when I step on pedal]
PAS Config (some of these I altered slightly before I noticed the negative human watts from the 30 mile ride, I just gave up on PAS for the ride and used throttle. I thought maybe PAS was just not being responsive, so my changes aren't the only problem if they are part of the problem at all)
PAS Mode: Torque
Start level: 15 Hwatts
Scale 5.0 W/HW (with digital PAS Level adjuster, I get same issue at all PAS scales)
Assist Avg: 6 poles (was 9 before I changed it, negative HW at both 6 and 9)
Start Thresh .6s/pole
stop thresh: .45s/pole
I'm working on a new build from Grin tech. I had a simple cheap motor setup about 10 years ago, but I'm essentially new to all of this.
Gmac 10t
CA3 WP
Baserunner L10
E rider Torque Sensing BB
UPP 52V 28Ah Li ion
tripwire installed and regen braking enabled.
I have read the manuals, zeroed the amps, and double checked all the PAS setup and PAS config screens that grin tech set before shipping. Everything looked correct to me there.
Human watts seems to be largely accurate until motor runs. It reads between 160-230 when I'm giving it some mustard.
If I turn the PAS on, then as the motor starts to engage, then the Human Watts reading goes haywire, jumping to 300, down to 160, flipping negative, and back, as the assistance tries to adjust to garbage input. On the diagnostics page, the W limit flag comes on as soon as I start pedaling, before I can even feel the motor kick in.
I get a similar effect if I use the thumb throttle, although the Human watts will flip as far as -800, back to positive, all over the place, but as long as the motor is in use, it tends towards negative territory, such that over her maiden 30 mile journey, CA showed a negative total and negative average HWatts.
However, on diagnostic page the W limiter does not activate when I use the throttle whether I'm pedaling or not (even when PAS is still turned on).
If I ride throttle without pedaling, the human watts reads 0.
Thanks for the help!
Ben
Info from setup screens to facilitate assistance:
Throttle mode: Thru
Power limits:
Plim 9900W
Wgain 15.0 (I could not find documentation on this number?)
PAS Setup:
homepage with no torque on pedals: V1.51 1.1 n/m responsive to stepping on pedals
Custom Trq 18 poles, 1 wire, 5V = FWD (Left pedal indicator activates for forward pedaling)
Trq scale = +70.0 Nm/v
Zero trq 1.49 (1.51) [changes appropriately when I step on pedal]
PAS Config (some of these I altered slightly before I noticed the negative human watts from the 30 mile ride, I just gave up on PAS for the ride and used throttle. I thought maybe PAS was just not being responsive, so my changes aren't the only problem if they are part of the problem at all)
PAS Mode: Torque
Start level: 15 Hwatts
Scale 5.0 W/HW (with digital PAS Level adjuster, I get same issue at all PAS scales)
Assist Avg: 6 poles (was 9 before I changed it, negative HW at both 6 and 9)
Start Thresh .6s/pole
stop thresh: .45s/pole