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6.5.15 Emergency stop command (network input SNVT_hvac_emerg
nviEmergOverride)
You can give an emergency stop command during inverter operation.
If "EMERG_SHUTDOWN" is requested during inverter operation, the inverter decelerates to a stop
independently of the operation mode.
Data Name
nviEmergOverride
⋅ Data acceptance timing ........... At network variable receive (nv_update_occurs event)
(1) Emergency Stop
⋅ The deceleration time depends on the Pr. 8, Pr. 44 and
other settings.
⋅ When the inverter starts decelerating under the
emergency stop command, "
display section of the operation panel (FR-DU07) and
the inverter is put in an emergency stop status.
⋅ An emergency stop status cannot be canceled unless
emergency stop cancel operation is performed.
⋅ During occurrence of a communication line error, an
emergency stop command is not accepted.
⋅ During an inverter stop, an emergency stop command is
invalid.
Initial Value
Range
H0
H0
H4
HFF
" appears in the
Description
EMERG_NORMAL
Emergency stop cancel
EMERG_SHUTDOWN
Emergency stop
EMERG_NUL
Invalid (no operation)
(2) Emergency Stop Cancel
⋅ During an inverter stop, turn OFF all start commands
(forward rotation command, reverse rotation command)
and request "EMERG_NORMAL".
When the inverter recognizes this status, it cancels the
emergency stop and also "
section disappears.
⋅ During deceleration made under an emergency stop
command, performing emergency stop cancel operation
will not cancel an emergency stop immediately. Perform
emergency stop cancel operation during an inverter
stop.
NETWORK VARIABLES
" shown in the display
6
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