
6
Installation
and Operation
EDBC250SIO | 2.0
212
6.6.2
Safety I/O-module Module Faults
The cyclic system test will duly detect all faults in the module within the minimum safe failover
time specified in section Technical Data in conformity with the requirements of the standards
listed in the certificate. The module will change to its fail-safe state.
This is indicated by LED "Safe Status" lighting up red.
DANGER
Use of devices in a fail-safe state
The following faults may provoke a hazard
Whenever a fault occurs, initiate all the required repairs or replacements.
6.6.3
Wrong Wiring
Wiring faults such as
•
a cross-fault between the inputs,
•
external power supplied to the inputs,
•
wrong test pulse output allocation to a specific input,
•
external power supplied to the outputs, or
•
a cross-fault between the outputs,
•
wrong allocation of SOX+ to the associated SOX- connector of the outputs,
•
a short at the outputs
will change the Safety I/O-module to its safe state. The red Diagnosis LED of the affected chan-
nel lights up.
Error messages may also be provoked by badly adjusted loads. Please refer to sections
►
4.5.4 Safe Digital Outputs and
►
6.3.9 Actuator Connection.
6.6.4
Temperature Faults
CAUTION
Do not operate the Safety I/O-module module out of the specified range
Faults due to overloading of components due to over- or undertemperature
Operate the module under the ambient conditions listed in section Technical
Data only while observing the derating of the outputs – see
►
section 6.3.10.
The module is designed for ambient temperatures between 0 °C and max. 55 °C and for being
installed in a control cabinet. The Safety I/O-module module features an extra internal temper-
ature sensor. Excess temperature will change the module to its safe state. You cannot start the
module at temperatures below 0 °C.
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