Code SV0430: Servo motor overheat

Also shown as: SV0430 (15i), SV0430 (30i/31i/32i), SV0430 (0i-D) Cause: (Alarm identification method) #7 #6 #5 #4 #3 #2 #1 #0 <1> Alarm 1 OVL LVA OVC HCA HVA DCA FBA OFA <2> Alarm 2 ALD EXP OVL ALD EXP Alarm description Action 1 1 0 Motor overheat 1 1 0 0 Amplifier overheat 1 (Action) (1) Motor overheat First, check whether the motor temperature is high immediately after the alarm is issued. If the alarm is issued when the motor temperature is not high, the temperature detection circuit may be abnormal. Contact your FANUC service staff. When the motor temperature is high immediately after the alarm is issued, check the following items: (a) Check the cooling state of the motor. <1> If the cooling state is abnormal, for example, when the cooling fan stops, check the power specification (voltage, phase sequence, and so on) of the cooling fan. If there is no problem with the power specification, replace the fan unit. <2> When a liquid-cooled motor is used, check the cooling system. <3> When the motor ambient temperature is higher than the specified temperature, lower the ambient temperature to satisfy the specification. (b) Increase the time constant or stop time in the program to ease the cutting conditions. Motor temperature information is displayed on the diagnosis screen. Motor temperature: Diagnosis information No. 308 (Series 16i, 30i, and others), diagnosis information No. 3520 (Series 15i) Pulsecoder temperature: Diagnosis information No. 309 (Series 16i, 30i, and others), diagnosis information No. 3521 (Series 15i) If an overheat alarm is issued when the temperature is not high, contact your FANUC service staff. (2) Amplifier overheat See the description about inverter overheat in Subsection 3.2.4.