sepam 20 user manual - Schneider Electric

7
MT10588
MT10589
Commissioning Checking logic input and output
connections
SFT2841 "Input, output, indicator status" screen.
SFT2841 "Sepam Diagnosis - output relay test" screen.
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Checking logic input connections
Procedure
Proceed as follows for each input:
1. If the input supply voltage is present, use an electric cord to short-circuit the
contact that delivers logic data to the input.
2. If the input supply voltage is not present, apply a voltage supplied by the DC
voltage generator to the terminal of the contact linked to the chosen input, being sure
to comply with the suitable polarity and level.
3. Observe the change of status of the input using the SFT2841 software, in the
"Input, output, indicator status" screen.
4. At the end of the test, if necessary, press the SFT2841 Reset key to clear all
messages and deactivate all outputs.
Checking logic output connections
Procedure
Check carried out using the "Output relay test" function, activated via the SFT2841
software, in the "Sepam Diagnosis" screen.
Only output O4, when used for the watchdog, can be tested.
This function requires prior entry of the "Parameter setting" password.
1. Activate each output relay using the buttons in the SFT2841 software.
2. The activated output relay changes status over a period of 5 seconds.
3. Observe the change of status of the output relay through the operation of the
related switchgear (if it is ready to operate and is powered), or connect a voltmeter
to the terminals of the output contact (the voltage cancels itself out when the contact
closes).
4. At the end of the test, if necessary, press the SFT2841 Reset key to clear all
messages and deactivate all outputs.
PCRED301005EN - 06/2008