molex TCDEC-8B4B-D1U-G8, Original Instructions Manual

Page: 29 / 187

EtherNet/IP™ CIP Safety™ IP67 HarshIO 600
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29
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IP67 Safety Digital I/O Modules
Using a Test Output
A test output can be configured as

Pulse Test
– When the external contact of the safety device is closed, the test output pulse allows
diagnosing external wiring faults as stuck with the power supply or short with the other safety input
from the same M12 connector.
Note!
Characteristics of the pulse test

Pulse test length: 2ms

Pulse test period: 12ms
Note!
A pulse test can be configured to each safety Input of the M12 connector. It can
be also associated to the both inputs.

Power Supply
– The test output is used as a power supply to supply 24 VDC for the safety input
device.

Standard
– The test output is used as a non-safe digital output.
Note!
No status led is associated to test outputs. Test output values and status can
nevertheless be monitored via Inputs process image.

Muting Lamp
– The test output diagnoses whether the circuit and lamp are operational.
Warning!
When test outputs are configured for Power Supply or Muting Lamp , the use of
double isolation cable could be required depending on the application and on the
expected SIL/CAT to achieve.