WEG CFW900 Serie Manual De Seguridad página 26

Maintenance and Troubleshooting
F160 - STO90 FAULT
Description:
It indicates to the user that STO90 is in a fault state.
Possible Causes:
Incorrect installation of the safety inputs circuit (STO1 and STO2).
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Actuation time between the safety inputs (STO1 and STO2) greater than 1 s.
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Incorrect setting of the safety input type (dry contact or OSSD) on DIP switches S1.
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DIP switches S2 activated in a state other than the STO state.
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Incorrect programming of the safety function or programming timeout (2 min).
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Damage in the electronic circuit of STO90.
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F161 - STO90 OFF-LINE
Description:
It indicates to the user that CFW900 central control has lost communication with STO90.
Possible Causes:
Poor contact between STO90 and CFW900 central control.
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Damage in the electronic circuit of STO90 or CFW900 central control.
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26 | CFW900