11 Safety Function
11.3 Safety Logic Circuit
11-40
HW1485509
HW1485509
11.3.7 General-Purpose Safety Output Monitoring Signal
General-Purpose Safety Output Monitoring Signal is used for detecting
error (e.g. wire sticking, etc.) by monitoring the feedback signal of the
devices (safety relay, contactor, etc.) driven by the General Purpose
Safety output signal (GSOUT, FSBOUT).
When feedback signal is not monitored, error (wire sticking, etc.) of the
devices (safety relay, contactor, etc.) driven by the General Purpose
Safety output signal (GSOUT, FSBOUT) is not detected. Perform the error
detection (signal mismatch) with the receiving peripheral devices (Safety
PLC, etc.).
Supports the monitoring signal by using the safety logic circuit instead of
the dedicated connection terminal.
11.3.7.1 Activate Signals
To activate General Purpose Safety Output Monitoring signals, Software
Pendant is required.
For more information on the Software Pendant, refer to chapter 12
“Software Pendant”.
For more information to set the General Purpose Safety Output Monitoring
signals, refer to chapter 11.3.7.2.
If the values of the functional safety general-purpose output
signal and the general-purpose safety output monitoring
signal are judged as NG for 500 ms or more, the following
alarm occurs:
• When the GSOUT signal is NG
Alarm 4767: M-SAF GENERAL OUT FB DIAG. ERROR
• When the FSBOUT signal is NG
Alarm 4768: M-SAF GENERAL OUT FB DIAG. ERROR2
For monitoring of the contact point B, the judgment is made
as follows.
Output value of the
general-purpose
safety output
signal
(GSOUT, FSBOUT)
Input value of the
general-purpose
safety output
monitoring signal
(GSEDM, XEDM)
Judgement
OFF Close Ok
OFF Open NG
ON Close NG
ON Open OK
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