Fanuc Alpha Power Supply Module Alarms
CNC has put to together a simple alarm list. If an alarm / error occurred on your Fanuc alpha power module or later aiPS module. Then check the front of the unit looking at its 2 digit 7-bit displays which should indicate an alarm number / code. Once you have these details look below, then contact us and we will see if we can assist you either with a testing, repair or exchange part if it seems the Fanuc PSM, PSMi, PSMC, aiPS, aiR module is faulty.
|Alarm Code||PSM alarm description|
|1||Overcurrent flowed into the input of the main circuit.|
|2||A cooling fan for the control circuit has stopped.|
|3||The temperature of the main circuit heat sink has risen abnormally.|
|4||In the main circuit the DC voltage (DC link) has dropped.|
|5||The main circuit capacitor was not charged with the specific time.|
|6||The control power supply voltage decreases.|
|7||In the main circuit the DC voltage at the DC link is abnormally high.|
|8||There is excessive short-term regenerative power|
|A||A cooling fan of external cooling has stopped.|
|H||Temperature of the regenerative resistor has risen abnormally.|
Certain alarms can be in combination with alarms on the SPM or aiSP module such as 1 & 30; 4 & 51, 5 & 33, 7 & 11; there are others but these are the most common. Refer too the decscriptions above. We do not offer the advice that an on site Fanuc trained maintenance engineer can.
|Alarm Code||aiPS Alarm Description|
|1||Over current flowed into the input of the main circuit.|
|2||Cooling fan for the control circuit has stopped.|
|4||Main circuit the DC voltage (DC link) has dropped.|
|5||a. Input power supply is abnormal.|
b. Main circuit capacitor was not recharged within the specified time.
|6||Control power supply voltage decreases.|
|7||Main circuit the DC voltage at the DC link is abnormally high.|
|A||Cooling fan of external cooling has stopped.|