WAGO -I/O-SYSTEM 750 Series Manual page 66

66 Connect Devices
Use the WAGO parameterization tool to set the parameters. For more information
about configuring the PROFIsafe I/O module, read section "Parameterization of
the PROFIsafe I/O Module with the WAGO Parameterization Tool".
Set the Dual channel evaluation parameter to "yes" for the digital inputs used
and the Valence evaluation parameter to "equivalent". In addition, set the
Discrepancy time parameter to the discrepancy time required for the two
switching elements.
You can set the Short circuit test parameter of both inputs used to "active" or
"not active". Please note that the Short circuit test parameter must be set the
same for both digital inputs.
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If you connect the digital inputs via the switching elements directly to the field
voltage of _24 V or to two semiconductor outputs of a sensor, then you have to set
the Short circuit test parameter to "not active" because otherwise the PROFIsafe
I/O module detects a short circuit and outputs the "Short circuit" diagnostic
message.
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WAGO-I/O-SYSTEM 750
753-661/000-003 4FDI 24V PROFIsafe V2 iPar
Version 1.4.0, valid from HW/SW Version 01/02
Manual