Acquire generated signal with this hardware ?

[blackburnite]

Is there a way to trigger a one shot with a duration greater than 5 ms?

[AndrewPolk]

The 9751 RevF device driver is limited internally to a 5ms pulsewidth for all conditions to protect the module.  In special cases, this limit can be extended if the method of operation is deemed acceptable by NI Powertrain Controls.  Please contact NI Applications Engineering for more information.

[VB05]

HI,

I have done it however not getting anything. 

[VB05]

HI, 

Did you find a way to trigger more than 5 ms? 

[adam.jungkunz]

Please generate a service request with NI Applications Engineering. After submitting your request, please have answers to the following questions ready at your disposal:

What are the current and voltage profiles you are trying to command from the NI 9751?

At what frequency do you want to run the module?

At what duty cycle do you want to run the module?

How many channels do you plan to use per module?

How many pulses per engine revolution do you plan to use?

[VB05]

Hello,

Thank you for your reply, however, how could I generate a service request to NI engineers. I have been contacting to the local NI engineers, where we have purchased several NI modules and two NI CRIOs, but not much help getting from them. 

[adam.jungkunz]

Can you post the answers to the questions I asked? Also, you can email powertraincontrolsinfo@ni.com for more information.

[VB05]

Hi,

At first, I would like to thank you for your reply and interest. 

The thing is, I do not have certain requirements yet. 

However, I am going to use one channel per module with Frequency up to 100 Hz, most probably 50% duty cycle and I know that per engine cycle (considering the fact that engine cycle in the simulation can be 2 or 4 strokes) I can have up to 5 pulses with max 5 ms each. I would like to learn how to change the duration up to 50 ms. What are the current and voltage profiles I could command from the NI 9751? 

[alhikami24]

Hi @Andrewpolk

Continues your above message.

If I want to monitor the injection profile in a real-time event. we could use typically a differential voltage probes and current probes and connect to a NI 9222 or NI9223. 

My questions: Do I need a DC/DC converter from high voltage to low voltage for connecting to NI? since the solenoid injector output voltage may achieve 190 V and NI input voltage is +- 10 V.

In addition, if I just want to capture injector voltage. do I need to use a current probe also?

Thank you in advance.

[APolk@BW]

For voltage, use something like this:

https://www.fluke.com/en-us/product/accessories/probes/fluke-dp120

For current, use something like this:

https://www.fluke.com/en-us/product/accessories/current-clamps/fluke-80i-110s