Would you like to create a turnkey solution to do this, or do you want a turnkey solution?
If you want a turn key solution, then I recommend sending the modules in to NI. NI will run them through a 100% coverage test. There is a fee assosiated with this service.
If you want to create a turn key solution that others can use, here's an outline to create a quick tester:
Functional Test (will each relay open and close):
-Get a high channel count DIO board
-Connect a DIO pin to each 2530 relay terminal
-Configure the 2530 to its native topology using a TB-2630.
-Scan through the relays with the DIO module to verify each relay will open and close (by passing a logic low, then logic high, and verifying you read this at the correct output pin).
The functional test is optional. However, if a relay is stuck closed, a logical DIO test is much faster at determining which relay is broken than the traditional method of connecting another mux and manually scanning through to see what's broken.
Resistance Test (what is the resistance across each relay (typically after passing functional test)):
-Buy a spare matrix terminal block
-Short all the columns to DMM+
-Short all the rows to DMM-
-Connect a sense+ lead to the columns
-Connect a sense- lead to the rows
-Open all relays, then measure the resistance (it should be high because all relays should be open). If the resistance isn't above 1GΩ (or whatever your meter can measure if less than this), then you'll need to run the functional test.
-Close one relay at a time, measuring the 4-wire resistance across each closed relay. Any relay that exceeds the spec should be replaced (see the relay replacement guide in the NI-Switches Help).
Hope this helps. Happy clicking!
-John Sullivan
Problem Solver
