Panasonic A4P Series Protective Error Causes Measures Function, Over-heat, Over-load, 166

When in Trouble

	Protective￿	Error￿	Causes	Measures
	function	code No.
*Over-		14	Current through the converter portion has exceeded	￿
current			the specified value.￿	￿
protection			1)Failure of servo driver (failure of the circuit, IGBT or	1)Turn to Servo-ON, while disconnecting the motor. If
			other components)￿	error occurs immediately, replace with a new driver.￿
			2)Short of the motor wire (U, V and W)￿	2)Check that the motor wire (U, V and W) is not
			￿	shorted, and check the branched out wire out of the
			￿	connector. Make a correct wiring connection. ￿
			3)Earth fault of the motor wire￿	3)Measure the insulation resistance between motor
			￿	wires, U, V and W and earth wire. In case of poor
			￿	insulation, replace the motor.￿
			4)Burnout of the motor ￿	4)Check the balance of resister between each motor
			￿	line, and if unbalance is found, replace the motor.￿
			5)Poor contact of the motor wire.￿	5)Check the loose connectors. If they are, or pulled
			￿	out, fix them securely. ￿
			6)Melting of the relays for dynamic brake due to	6)Replace the driver. Prohibit the run/stop operation
			frequent Servo-ON/OFF operation ￿	with Servo-ON/OFF.￿
			7)The motor is not applicable to the driver.	7)Check the name plate and capacity of the motor and
				driver, and replace with motor applicable to the driver.
*Over-heat		15	Temperature of the heat sink or power device has been	￿
protection			risen over the specified temperature. ￿	￿
			1)Ambient temperature has risen over the specified	1)Improve the ambient temperature and cooling
			temperature.￿	condition.￿
			2)Over-load	2)Increase the capacity of the driver and motor.￿
				Set up longer acceleration/deceleration time.￿
				Lower the load.
Over-load		16	Torque command value has exceeded the over-load	Check that the torque (current) does not oscillates nor
protection￿			level set with SV.Pr72 (Overload level) and resulted in	fluctuate up an down very much on the graphic screen
			overload protection according to the time	of the PANATERM®. Check the over-load alarm display
			characteristics (described later)￿	and load factor with the PANATERM®.￿
			1)Load was heavy and actual torque has exceeded the	1)Increase the capacity of the driver and motor. Set up
			rated torque and kept running for a long time. ￿	longer acceleration/deceleration time. Lower the load.￿
			2)Oscillation and hunching action due to poor	2)Make a re-adjustment.￿
			adjustment. Motor vibration, abnormal noise. Inertia	￿
			ratio (SV.Pr20) setup error. ￿	￿
			3)Miswiring, disconnection of the motor. ￿	3)Make a wiring as per the wiring diagram. Replace the
			￿	cables. Connect the black (W phase), ￿
			￿	white (V phase) and red (U phase) cables in
			￿	sequence from the bottom at the CN X2 connector.￿
			4)Machine has collided or the load has gotten heavy.	4)Remove the cause of distortion. Lower the load.￿
			Machine has been distorted. ￿	￿
			5)Electromagnetic brake has been kept engaged.￿	5)Measure the voltage between brake terminals.
			￿	Release the brake ￿
			6)While wiring multiple axes, miswiring has occurred by	6)Make a correct wiring by matching the correct motor
			connecting the motor cable to other axis.￿	and encoder wires.￿
			7)SV.Pr72 setup has been low.	7)Set up SV.Pr72 to 0. (Set up to max. value of 115%
				of the driver)
*Over-		18	Regenerative energy has exceeded the capacity of	Check the load factor of the regenerative resistor on
regeneration			regenerative resistor. ￿	the monitor screen of the PANATERM®. Do not use in
load			￿	the continuous regenerative brake application.￿
protection			1)Due to the regenerative energy during deceleration caused	1) Improve the regenerative processing capability, e.g.,
			by a large load inertia, converter voltage has risen, and the	increase the motor and driver capacity, put external
			voltage is risen further due to the lack of capacity of	regenerative resistor, etc.￿
			absorbing this energy of the regeneration discharge resistor.￿	￿
			2)Regenerative energy has not been absorbed in the	2) Reduce the regenerative energy at deceleration,
			specified time due to a high motor rotational speed. ￿	e.g., lower the motor rotation speed, make the
			￿	deceleration time longer, etc.￿
			3)Active limit of the external regenerative resistor has	3) If SV.Pr6C (External regenerative resistor set up) is
			been limited to 10% duty.	“0” and an internal regenerative resistor is used, and
				if SV.Pr6C is “3” and an external regenerative
				resistor is not used, use the external regenerative
	<Remarks>￿			resistor and try to set SV.Pr6C to “1”.￿
	Install an external protection such as thermal fuse without fail when you			If the external regenerative resistor is used and
	set up SV.Pr6C to 2. Otherwise, regenerative resistor loses the protection			SV.Pr6C is set to “1”, secure any external over-
	and it may be heated up extremely and may burn out.			regeneration load protection measures and try to set
				SV.Pr6C to “2”.

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