Axis Amplifier - Common Alarms

This Service News is for common alarms being seen on Axis Amplifiers

There has been an increase in amplifiers experiencing amplifier over temperature, cable disconnect, and amplifier short circuit alarms. If you are troubleshooting an amplifier with any of these alarms, first check the part number, vendor, and manufactured date of the amplifier. Then refer to the tables at the bottom of this alert and follow the corrective action based on the alarm. Below is information on how to identify the part number, vendor, and manufactured date from the amplifier.

Note: When replacing an amplifier with a service part, check the Amplifier Oscillator type and vendor. If it matches the incorrect oscillator value then do not install the amp. Replace it with a new amplifier.

Amplifier Part Number: Can be identified through looking at the machine's BOM on HBC. If the machine has had amplifiers replaced, look at previous work orders for the machine to determine the amplifier part number.

Vendor and Manufactured Date: The vendor can be identified through the label on the amplifier. The vendor code is given by the first 2 letters on the amplifier label. The 2 vendor codes that are applicable to the issues detailed in this alert are SI and SN. The manufactured date of the amp can also be determined from the label. The first 2 digits after the vendor code give the week the amplifier was manufactured, and the next two digits give the year it was manufactured.

Oscillator Identification: The Oscillator can be identified by looking on the right side of the amplifier. The oscillator is located near the second vent on the right side as shown in the Oscillator Type Identification image. Remove the cover if needed to view the oscillator type. Look for the value on the oscillator component. The oscillator will be marked with a 40.00 [1] or 4.00 [2] (4.00 is the correct value).

Example: In the Vendor/Date Identification image the vendor label on the amplifier is SN29242042. From this label you can tell the vendor [1] the week [2] and year [3] the amplifier was manufactured. So, this amplifier would have the following information:

• Vendor: SN
• Manufactured Date: 2924 means the 29th week of the year 2024. (Date would be 07/24)

 

Vendor/Date Identification

Oscillator Type Identification PreviousNext

Alarm {axis}.991 Amplifier Over Temperature Alarm

Alarm	Amplifier Part Number	Vendor	Date	Corrective Action
{axis}.991 Amplifier Over Temperature Alarm	32-5550J - 30A BL Smart Amp 32-3551J - 45A BL Smart Amp 32-5550N - 30A BL Smart Amp 32-3551N - 45A BL Smart Amp	SI	None	Check the oscillator type on the amplifier board using the steps outlined above. If the oscillator has 40.00 on it then the amp needs to be replaced. If the oscillator has 4.00 on it then follow the standard alarm troubleshooting for the {axis}.991 alarm.

 

Alarm {axis}.993 Amplifier Short Circuit

Alarm	Amplifier Part Number	Vendor	Date	Corrective Action
{axis}.993 Amplifier Short Circuit Alarm	32-5550N - 30A BL Smart Amp 32-3551N - 45A BL Smart Amp	SN	2/24-9/24	If the amplifier matches the part number, vendor, and date code listed in this table then replace the amp. If it doesn't match all of these criteria, follow the standard troubleshooting for checking the amplifier for shorts.

 

Alarm {axis}.9911 Axis Amplifier Cable Disconnect

Alarm	Amplifier Part Number	Vendor	Date	Corrective Action
{axis}.9911 Axis Amplifier Cable Disconnect Alarm	32-5550J - 30A BL Smart Amp 32-3551J - 45A BL Smart Amp	SI	None	If the {axis}.9911 alarm is intermittent and can be reset, the amplifier needs to replaced. If the alarm cannot be reset, follow the standard alarm troubleshooting for the {axis}.9911 alarm.

 

Alarm {axis}.9911 Axis Amplifier Cable Disconnect

Alarm	Amplifier Part Number	Vendor	Date	Corrective Action
{axis}.9911 Axis Amplifier Cable Disconnect Alarm	32-5550N - 30A BL Smart Amp 32-3551N - 45A BL Smart Amp	SI SN	7/24-9/24	If the {axis}.9911 alarm is intermittent and can be reset, AND the amp meets the manufactured date range, then the amplifier should be replaced. If the alarm cannot be reset, follow the standard alarm troubleshooting for the {axis}.9911 alarm.

If parts need to be replaced, provide the information gathered from the amplifier label as well as any other issues found through troubleshooting. Refer to Servo Amplifier - TSG for troubleshooting information if the amplifier doesn't fit the categories above. The replacement parts for the amplifiers are:

• 30A BL Smart Amplifier - 93-5501
• 45A BL Smart Amplifier - 93-5502