Hi,
I have a question about, the utilization of multiplexing relay, for example, i want to test contact relay with external V/I meter through ASRU ext1/ext2 or with source s and detector i.
But, i must control the relay, i want to put a PSU on a pin of coil and connect to ground via connect g the second pin of coil.
The question is limitation V and I for this multiplexing:
connect g to pins "7"
connect g to ground
Example:
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
subtest "Contact_Travail2"
disconnect all
connect i to pins 1
connect l to ground
connect s to pins 6
connect g to pins "7" ! the second pin coil
connect g to ground !
detector dcv, expect 5
measure 5.2, 4.8
end subtest
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Best regards
I have a question about, the utilization of multiplexing relay, for example, i want to test contact relay with external V/I meter through ASRU ext1/ext2 or with source s and detector i.
But, i must control the relay, i want to put a PSU on a pin of coil and connect to ground via connect g the second pin of coil.
The question is limitation V and I for this multiplexing:
connect g to pins "7"
connect g to ground
Example:
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
subtest "Contact_Travail2"
disconnect all
connect i to pins 1
connect l to ground
connect s to pins 6
connect g to pins "7" ! the second pin coil
connect g to ground !
detector dcv, expect 5
measure 5.2, 4.8
end subtest
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Best regards
Is the relay that you are testing on the UUT itself?
When energizing relay coils, I typically try to utilize relay-drive circuitry on the UUT itself to energize the coil.
The voltage spike from the coil when it de-energizes can damage tester relays, DC sources and digital drivers.
Is there a relay driver such as a transistor or opto-isolator on the UUT?
I would suggest using this to energize the coil to prevent tester damage.
Thanks,
Mark