Hi All,

I need to put a Tramming hour meter on the display im going to use a pressure switch to activate when then machine is tramming please can some one help me with this

For external gauges we have an electric hourmeter counter (see Sales Bulletin http://www.fwmurphy.co.uk/products/vib_ ... run_tm.htm)
and a digital hourmeter (see Installation Instructions at [/url]http://www.murcal.com/Catalog/Tachomete ... -Hourmeter[/url]).
The mechanical counter will not reset after a job where the digital hourmeter will reset. The digital hourmeter operates off batteries so it will retain the time of a"Tramming" job. Both of these devices need to have switched power to log the time. This means that some smart device will need to switch a relay or the actual power to the hourmeters to control the on and off times to track the "Tramming" time for a job. Normally, we attach guages to the PowerVision displays to show RPMs, Pressure, Temperature, etc. iva the ModBus. So an easy solution would be to use a PowerVision Display attached to a ModBus hourmeter, but at this time I can not find a PVA guage which keeps track of hours/time other than these above hourmeters.

On the other hand, the PowerVision Displays can be configured to log the "Tramming" job times base on the pressure sensor discrete input. Then as an option you can add the external hourmeters gauges (identified above).

I will need some time to build you a sample Display Configuration which addresses your current concerns. You need to build a Display Configuration which processes the input pressure discrete. When the pressure switch is set (and the engine is running), this transition event should trigger the logging of the tramming hours. When the pressure switch is released, it should trigger an event to stop logging the tramming hours. So you'll need a state machine to monitor the tramming hours and it will need to maintain two states; STtramHoursOff and STtramHoursOn. The STtramHoursOff state is the initial state. The STtramHoursOn state allows "Tramming" hours to be logs. To know that your are operational, you'll need a variable to read the Engine Speed from the J1939 (You don't want false triggers from the pressure sensor if you are not running). You will also need a state machine to store the hours to non-volatile memory (SMmachineHourStore). You'll also need a script to read the pressure discrete
at a periodic rate. I'll start adapting some scripts we have here to log "Tramming Time" in addition to machine operating time.

Contact me via the Forum is you have other ideas or approaches.
Regards,
pcebuhar

Hello Marcell,
I talked to several people and they suggested this Machine Hours config file as a good example for adding the Tramming Time. You will need to modify the configuration to accept the pressure switch input and you may want to add a discrete that could be used to drive the relay for Hourmeter. Let me know if you still need more information.
Best Regards,
pcebuhar

thanks for all the help hope the customers wont have any other wierd requests