topic Re: relay recommands in Instrument Control (GPIB, Serial, VISA, IVI)

relay recommands

jetfire — Thu, 07 Mar 2013 15:19:02 GMT

Hi,

i plan to buy relay for controlling mit labview two dc Power supply output on/off,one DC Power Supply （HP E3631A）enable one chanel output 3.5 V,and relay set output on/off,another DC Power Supply （HP E3631A) enable three chanels 1v,+18V,－18V,relay set them on/off.

i am really new to relay switch, i have writed Email to NI service,und waiting for answer,if anyone recommands relay to complete this Switching function that would be appreciated.

Re: relay recommands

K C — Fri, 08 Mar 2013 08:02:33 GMT

Hi,

Why do you want to switch a power supply output with a relay ? You can interface with the power supply (GPIB) and switch the output on and off.

Kees

Re: relay recommands

jetfire — Fri, 08 Mar 2013 08:27:34 GMT

@K C wrote:

Hi,

Why do you want to switch a power supply output with a relay ? You can interface with the power supply (GPIB) and switch the output on and off.

Kees

because i want to deterministic timing controll for switching between two power supply output,interface with the power supply (GPIB) have kommucationsoverhead

Re: relay recommands

K C — Fri, 08 Mar 2013 08:53:32 GMT

Hi,

In that case I would use a solid state relay. No contact bounce and better timing.

I think you are from Germany. Look a 'Schuricht' for 'solid state relay'.

Kees

Re: relay recommands

jetfire — Fri, 08 Mar 2013 09:02:11 GMT

thanks for your recommands, can this Schuricht solid state relay kontroll direct mit labview ？ i need to a relay that can talk to labview.

Re: relay recommands

K C — Fri, 08 Mar 2013 09:11:46 GMT

Hi,

No, you need a (low) voltage source to drive the Solid State relay. Maybe a cheap digital output module can do this depending on the type a soldis state relay you need and choose.

Take a look at the datasheet of a solid state relay.

Kees

Re: relay recommands

jetfire — Fri, 08 Mar 2013 09:25:57 GMT

@K C wrote:

Hi,

No, you need a (low) voltage source to drive the Solid State relay. Maybe a cheap digital output module can do this depending on the type a soldis state relay you need and choose.

Take a look at the datasheet of a solid state relay.

Kees

where can i choose cheap digital output module？

Re: relay recommands

K C — Fri, 08 Mar 2013 11:56:30 GMT

At NI or cheaper an Arduino UNO

Re: relay recommands

Dennis_Knutson — Fri, 08 Mar 2013 15:51:08 GMT

@jetfire wrote:

@K C wrote:

Hi,

Why do you want to switch a power supply output with a relay ? You can interface with the power supply (GPIB) and switch the output on and off.

Kees

because i want to deterministic timing controll for switching between two power supply output,interface with the power supply (GPIB) have kommucationsoverhead

You have overhead with communicating to a relay as well. You didn't even try software triggering both of the supplies at once, did you?

Re: relay recommands

jetfire — Fri, 08 Mar 2013 16:16:14 GMT

@Dennis_Knutson wrote:

@jetfire wrote:

@K C wrote:

Hi,

Why do you want to switch a power supply output with a relay ? You can interface with the power supply (GPIB) and switch the output on and off.

Kees

because i want to deterministic timing controll for switching between two power supply output,interface with the power supply (GPIB) have kommucationsoverhead

You have overhead with communicating to a relay as well. You didn't even try software triggering both of the supplies at once, did you?

Hallo, i have read about im attachment Triggered example,but i do not understand,how to use software triggering both of the supplies at once,i have little experience about it

Re: relay recommands

Dennis_Knutson — Fri, 08 Mar 2013 16:28:02 GMT

As I mentioned earlier, with the low level GPIB function, you can generate a GET to multiple instruments. With the VISA GPIB Command function, you might be able to send the command GET and they'll both switch to the programmed output voltage. I don't have access to a 363x supply or manual right now and I am unsure if you can actually program it for that type of trigger. I'm suggesting that you study the manual and experiment with the trigger options before going out and investing in more hardware. There is the VISA Interactive Control and the lower level GPIB Interactive Control. Both provide a convient means of testing commands. What you need is not really provided in the driver so if anything works, you'll need to write some custom code.

Re: relay recommands

jetfire — Fri, 08 Mar 2013 16:52:13 GMT

@Dennis_Knutson wrote:

As I mentioned earlier, with the low level GPIB function, you can generate a GET to multiple instruments. With the VISA GPIB Command function, you might be able to send the command GET and they'll both switch to the programmed output voltage. I don't have access to a 363x supply or manual right now and I am unsure if you can actually program it for that type of trigger. I'm suggesting that you study the manual and experiment with the trigger options before going out and investing in more hardware. There is the VISA Interactive Control and the lower level GPIB Interactive Control. Both provide a convient means of testing commands. What you need is not really provided in the driver so if anything works, you'll need to write some custom code.

thanks for your suggestion,i will try it if i have enough time，because it is my last task,my professor hope me to as quickly as possible get results, so i do not know if i have so many time to write some custom code.

Re: relay recommands

jetfire — Sat, 09 Mar 2013 13:33:36 GMT

@Dennis_Knutson wrote:

As I mentioned earlier, with the low level GPIB function, you can generate a GET to multiple instruments. With the VISA GPIB Command function, you might be able to send the command GET and they'll both switch to the programmed output voltage. I don't have access to a 363x supply or manual right now and I am unsure if you can actually program it for that type of trigger. I'm suggesting that you study the manual and experiment with the trigger options before going out and investing in more hardware. There is the VISA Interactive Control and the lower level GPIB Interactive Control. Both provide a convient means of testing commands. What you need is not really provided in the driver so if anything works, you'll need to write some custom code.

hallo , as your suggestion i wanted to try writing some custom code ,in Hp e3631a manual i found the command GET ,how should i begin to write this comand or code？ i have no experience about GPIB programing ,can you recommand some tutorials about GPIB programing like programing tools und language..... thanks in Advanced

Re: relay recommands

Dennis_Knutson — Sat, 09 Mar 2013 14:42:07 GMT

I already mentioned the tools you can use. Go into MAX and select Help for either NI-488.2 or NI-VISA.