ON delay
OFF delay
Input filters
Test output terminal short detection
I/O power supply monitoring
Single channel
Dual-channel equivalent input
Dual-channel complementary input
For safety mat/safety edge
For safety mat/safety edge
Dual channel evaluation
Test Pulse Evaluation
Without test pulse
Mechanical contacts
Single-beam safety sensors
Non-contact door switches
Safety CPU UnitSafety Input Unit Safety Output Unit
Safety input terminals
Safety input
function
Safety I/O
communications
Safety program
execution
Safety I/O
communications
Safety output data
Safety input data
Safety output
function
Safety output terminals
There is no redundancy.
Make sure that the two inputs have the same value.
Make sure that the two inputs have different values.
Self-diagnosis
Other Functions
A function that detects ground faults of external wirings that are connected to the test output terminals
A two-input logic check is made for a safety mat.
This function monitors the voltage range of the I/O power supply to ensure the operation of the internal
circuits.
ON delays and OFF delays can be set to prevent malfunctions caused by noise or by chattering of
externally connected devices.
When safety terminal inputs are
used as dual channels, the two
inputs are checked for
consistency.
A pulse is output at a specific
interval to detect failure of or
wiring errors in the externally
connected device. The test pulse
that is used depends on the
safety device.
The following pages describe the details of the individual safety input functions.
A test pulse with a specific period is output on the 24-VDC power line from a test output terminal to
detect wiring errors and failure of the externally connected device. The following parameters are also
used.
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General
