Need help with Sevcon reverse control

romasx

1 µW
Joined
Sep 13, 2024
Messages
2
Location
Lithuania
Hi All,
Some background: I have some AVID eBear ATV. It was heavily "repaired" by someone, so one control module is missing. There are 2 SEVCON Gen4 48V 450A for front/back. It look like they was controlled by CAN from this missing module. Because control module is missing - I'm trying to reprogram SEVCON's to direct control. Firstly one motor alone. I have DVT, cable. Parameters of motors look OK, so I configured DI, AI, VPDO's by manual. Two DI as Forward/Reverse and one AI as Throttle 0-10V. In VPDO and Input Output monitor I see Forward, Reverse switches working. All safety inputs disabled. After I changed Local Motor Control to "motor drive left..." it started to react to throttle, it turns wheels to go forward in torque mode up to maximum RPM's as it should.
My problem is: It does not work in Reverse direction. Rev input wired correctly, I see it mapped correctly as Reverse switch and it works. What I am missing there?
Please share your knowledge
 
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