MPC20 Timer_Crank_Speed_Signal_Wait

Hamsteh
Posts: 42
Joined: Wed Sep 21, 2011 3:31 am

MPC20 Timer_Crank_Speed_Signal_Wait

Post by Hamsteh » Sun May 31, 2015 8:11 pm

Good morning,

I have discovered a crank cycle bug present in both the public release of PowerVision 2.7.10475 and the MPC-20 release of PowerVision 2.7.10475 - present in the standard MPC20 configuration.

In Crank_Rest_ECS, the variable Timer_Crank_Speed_Signal_Wait is not reset to 12 each cycle.
As such the speed loss error will comeon after a number of cycles (usually >3)

The fix is simply adding a Set Variable after the Preheat? condition that sets Timer_Crank_Speed_Signal_Wait to 12 prior to setting state back to Crank or to Prestart 2.

Regards,
Attachments
Speed Loss.PNG
Crank_Rest_ECS
Speed Loss.PNG (78.99 KiB) Viewed 37 times
www.ajbarry.com.au Bespoke Control Systems
BEng (Robotics and Mechatronics) & BSci (Computer Software Engineering)
Melbourne, Australia