6-5
H Protection Functions
Motor protection Electronic thermal protection
Instantaneous
overcurrent protection
When 250% of the rated output amperage is exceeded
Overload protection When 150% of the rated output amperage is exceeded for one
minute
Overvoltage protection Stops the system when DC voltage of the main circuit exceeds
approximately 410 V (400-VAC Class approximately 820 V)
Voltage drop protection
3G3EV-A2jjjM: Stops the system when voltage drops
below approximately 200 V
3G3EV-ABjjjM: Stops the system when voltage drops
below approximately 160 V
3G3EV-A4jjjM: Stops the system when voltage drops
below approximately 400 V
Protection from
instantaneous power
interruption
Stops the system when a power interruption lasts for 15 ms or
more.
Operation can be continued by setting constant No. 36 as
follows:
•Operation is continued if a power interruption only lasts for
approximately 0.5 second or less.
•Operation is continued unconditionally.
Radiation fin overheat
protection
Detects a fin temperature of 110 ±10°C
Ground protection Overcurrent level protection
Specifications Chapter 6
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