GE AF-300, C11 manual

Protection

Item	Specifications	Remarks
Overload	∙ Internal electronic thermal overload relay protects drive overload.
Overvoltage	∙ Detect the excessive DC link circuit voltage to stop drive.
Overcurrent	∙ Detect overcurrent due to overload on drive output side to protect drive
Incoming surge	∙ Detect incoming surge voltage between AC power and the earth to protect
	drive.
Undervoltage	∙ Detect the DC link circuit undervoltage to stop drive
Overheating	∙ Detects the cooling fan fault or abnormal temperature rise of drive to pro-
	tect drive.
Short-circuit	∙ Detect overcurrent due to short-circuit on drive output side to protect drive.
Ground fault	∙ Detects overcorrect due to ground fault on drive output side to protect drive.
	(Detect at starting)
Motor protection	∙ Protect general-purpose motor with electronic thermal overload.
Input phase fail-	∙ The drive is protected against phase failure on the input side or over-current
ure protection	due to inter-phase imbalance.
(only for 3-phase
200V series)
Stall prevention	∙ Controls frequency to prevent OC trip in case of the output current exceeds
	the limit value during acceleration.
	∙ Lowers the frequency to hold almost constant torque in case of the output
	current exceeds the limit value during constant speed running.
	∙ Controls frequency to prevent OU trip in case of the DC link circuit voltage
	exceeds the limit value during deceleration.
Retry	∙ “Retry” function can be set for the protective functions OC1 to OC3 and
	OU1 to OU3.(No. of times of retry: 5, waiting time: 0.5s fixed.
Dielectric	∙ At 2000Vac for 1 min. between any main circuit terminals and
strength test	ground.(10mA or less)
Megger test	∙ At 500Vdc megger test between any main circuit terminals and ground
	(5MΩ or more)

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