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14. Protective function ■
■ Cd28=2
Current MCK feedback speed search:Start searching motor speed by frequency command or
maximum output frequency, when output current is over 120% rated current in searching and start by
decreasing output frequency, after current is lower than 120% rated current, then proceed regular
operation.
■ Cd28=3
MCK disconnection start + inertial start: PCB control circuit is unable to operate when disconnection or
power voltage is too low. This function is able to automatic search speed and restore setting frequency to
operate normal when power reconnection.
Operation
command
Output
frequency
Cd78
Output
current
Cd76
Cd77
Frequency command