What should be the extra circuitry for this??

[42113]

I am an undergraduate student working on project for measurement of automotive relay parameter measurement using LabVIEW. The parameters to be measured are:
1)Operating time 2)Release time 3)Pull up voltage 4)Drop off voltage 5)Coil Resistance 6)mV drop across contacts.

For this, I am using NI PXI 1052, SCXI 1125 and SCXI 1313 attenuator with LabVIEW.The relay to be tested is of 12V-15A.

I want to know what extra electronic circuitry will be required to measure the above parameters?

[K C]

Hi,

I made a test for a relay module last year. It's a Safety relay module with 3 relay in series. The test I made measures the Pull-in-, Drop-out voltage, Pull-in-, Drop-out time, Bounce time (not in your list), contact resistance plus some other test specific for this module.

What I don't see a power supply in your list is. Do you want to measure the contact resistance with full load ?

Things I added (beside the PSU):

1 relay to reverse the power connection to the relay module

1 relay to connect a extra load to the PSU (explained later)

A few resistor and MosFet to drive the relay.

The power reversal depends on your relay.

The extra PSU load was needed in my case for the drop-out test. Otherwise the voltage from the PSU drops to slow for a good Drop-out test.

How is that for a start