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Provide mechanical interlocks for MC1 and MC2. The inverter will be damaged if the power supply is input to the
inverter output section.
When automatic restart after instantaneous power failure has been selected, the motor and machine will start
suddenly (after the reset time has elapsed) after occurrence of an instantaneous power failure. Stay away from
the motor and machine. When you have selected automatic restart after instantaneous power failure function,
apply in easily visible places the CAUTION stickers supplied to the installation guideline.
♦ Parameters referred to ♦
Pr. 7 Acceleration time, Pr. 21 Acceleration/deceleration time increments
Pr. 13 Starting frequency
Refer to page 104
Pr. 65, Pr. 67 to Pr. 69 Retry function
Pr. 78 Reverse rotation prevention selection
Pr. 178 to Pr. 189 (input terminal function selection)
4.12.2 Power failure signal (Y67 signal)
When output is shutoff due to a power failure or undervoltage, the Y67 signal turns ON regardless of the automatic
restart after instantaneous power failure function setting.
Y67 signal turns OFF at power failure recovery or undervoltage recovery.
To use Y67 signal, set "67 (positive logic) or 167 (negative logic)" in any of Pr. 190 to Pr. 192 (Output terminal function
selection) to assign the function.
Recovery after power failure
Power supply
ON
Output frequency
Y67
OFF
CAUTION
⋅ Changing the terminal assignment using Pr.190 to Pr.196 (Output terminal function selection) may affect the other functions. Set
parameters after confirming the function of each terminal.
♦ Parameters referred to ♦
Pr. 190 to Pr. 196 (output terminal function selection)
CAUTION
Refer to page 161
Refer to page 192
Refer to page 124
OFF
ON
Time
ON
OFF
Refer to page 130
Operation selection at power failure
and instantaneous power failure
Refer to page 101
Converter voltage recovery after E.UVT
Power supply
ON
Output frequency
Y67
OFF
ON
E.UVT occurrence
Time
Converter voltage recovery
OFF
157
4
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