Dear Sir or Madam,

Our customer wants to control the engine speed via PV450 like PV101's engine speed control capability (TSC1). Is it possible for us to configure the PV450 to apply such a capability? If yes and you have sample configuration data which has a capability of engine speed control, it is very helpful for our customer and us to know how we should set up the configuration data.

Your kind support and help would be very much appreciated.

Best regards,

Toshiki Takehara

Hello Toshiki Takehara,

Here is a simple configuration that sends the TSC1 message (PGN 0), shows you the parameters, and let's you increase/decrease the Engine Requested Speed/Speed Limit parameter (SPN 898).

The first thing that we did was to add the definition og PGN 0 to the J1939 database, then we added the parameters to the transmit device, then we added the parameters to the screen to see that values we are sending. To control the requested speed we added calculation events to that variable and we programmed keys to fire those events.

You might have to change the values of the other parameters in PGN 0 to work with your specific engine.

Regards,

ksaenz

Dear ksaenz,

I apologize for my late in response.

Thank you very much for sending the sample configuration data and your kind explanation.
I will ask my customer to refer your config. data and make their own one.

Best regards,

Toshiki Takehara

Dear Ksaenz,

Our customer wants to make the capability that ramps up/down the engine RPM to defined value (e.c. 1000, 2000, 3000rpm, etc....) and assign this capability to some buttons on PV450. They also want to set up the time to ramp up/down the RPM to defined value (e.c. engine RPM changes from 1000 to 2000 in 5 sec. after pushing specified button). Is it possible for them by using PowerVision?

If yes, please kindly let us know how we should do to make such configuration. If you provide us with any sample config file that have the above capability, we would very much appreciated.

Best regards,

Toshiki Takehara

Ksaenz is out this week. I am sure you could accomplish this via scripting in a 450 i'm not sure if we have examples of this that are available. I will forward this on to see if we have anything developed that we can provide.

Dear Toshiki,

Looking at the example Kristian sent you, this can be modified simply to create what you wish.

In the Programming tab there is a variable which is labeled J1939.Transmit.Engine Requested Speed/Speed Limit (it is in the J1939 group)
This variable has 2 calculation events associated with it. These events are tied to two keys. Currently the calculation events increment or decrement the speed.

I added a calculation event that simply sets the speed to 3000 and then assigned the event to the top right key. You can use this as a guide to do the speeds requested by the customer.

To change the ramp time is a little more complicated. Basically what needs to happen is the repeat key needs to be assigned to a event in a state machine that controls the timing of the ramp for RPM. The repeat is a fixed time, but timers in state machines are very flexible. You might want to contact Murphy about doing a configuration like this if you think you or the customer can't create it yourself.

Hope this helps.

Brian McRae
FW Murphy

Attached modified configuration

Dear Brian,

Thank you very much for your kind explanations and a sample config data.
I will try to make my config data based on your sample.

Best regards,

Toshiki Takehara