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5.5.6 Emergency Operation
In case of an emergency, the following two kinds of operations can be made by the PI/O signal.
5.5.6.1 Emergency Operation Mode
This operation mode is used to operate the equipment regardless of the signals sent from the TOSLINE-S20 in
the system with the transmission unit (TOSLINE-S20). Normally, if a fault occurs in the host PLC of the system
operated only with TOSLINE-S20 signals from the host PLC, drives units are operated only with I/O level signals
in this mode.
•
Contact, which is closed in the emergency operation mode, is connected to the terminal on the input/output
circuit board (XIO: ARND-3120).
•
Assign this input signal to E-DRIVE signal.
•
If the E-DRIVE signal is closed, the sequence data input from TOSLINE-S20 is omitted and operation is
made only with P I/O.
In the emergency operation, the sequence input of the P I/O input is mask-processed by $MSK_DI_EMG.
Therefore, sequence input signals different from normal operation are input.
5.5.6.2 E-HOLD Mode
In this operation mode, if a fault occurs in the main system, which is being operated, the contact is input to the
input/output circuit board (XIO: ARND-3120) to continue operation at a speed, at which the fault has occurred.
•
Contact, which is closed by the HOLD operation command, is connected to the terminal on the input/output
circuit board (XIO: ARND-3120).
•
Assign this input signal to HOLD signal.
•
If the external contact input to EXT is closed, the operation is made based on the external reference
regardless of HOLD inputs.
•
If the external contact input to EXT is opened and external contact input to HOLD is closed, that speed is
kept and operation continues based on that speed reference (E-HOLD state).
When stopping operation from the E-HOLD state, the external contact input to HOLD is opened or other
operation preparation (UV) conditions are turned off.
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