Operation Setting Function At Detection Of External Power Supply Voltage Error - Mitsubishi Electric NZ2GFSS2 32D S1 User Manual

8.7
Operation Setting Function at Detection of
External Power Supply Voltage Error
Users can select whether to continue safety communication or stop it when an external power supply voltage error occurs.
Restoration
The following table shows how the module operation will be restored from the external power supply voltage error.
Item
Stop safety communication
Continue safety communication
(Without output interlock)
Continue safety communication
(With output interlock)
*1 To prevent unintended restart, configure an external interlock circuit for the safety outputs.
• The interlock is applied to the test pulse output terminals (T) as well.
• If an external power supply voltage error occurs, the output of the power supply current terminal for input
device (COM+) is forcedly turned off.
• The output of the power supply current terminal for input device (COM+) momently turns on at the following
timing: at the occurrence of an external power supply voltage error (minor error); at the checking whether
the external power supply voltage has returned to normal after the minor error. If this becomes a problem for
the safety system, configure an interlock circuit to ensure that the entire system will always operate safely.
8 FUNCTIONS
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8.7 Operation Setting Function at Detection of External Power Supply Voltage Error

Restoration
The safety inputs and safety outputs will restart by turning off and
on the module power supply.
Safety communications continue, but safety outputs are turned off.
*1
After the error causes are eliminated, a minor error in the module
will be cleared and the safety outputs will restart. The control will
restart at the canceling of the safety output interlock by the external
circuit.
Safety communications continue, but safety outputs are turned off
and the outputs are interlocked.
At the canceling of the interlock by the CPU module, a minor error
will be cleared and the safety outputs will restart.
Operation at the error Error status of the
module
• Safety communications Moderate error
are stopped.
• Safety inputs and safety
outputs are OFF.
• Safety communications Minor error
are continued.
• Safety outputs are OFF.
(interlock by the external
circuit)
• Safety communications Minor error
are continued.
• Safety outputs are OFF.
(interlock by the module)