The FANUC 7115 alarm can be triggered by a variety of factors, including:
Many high-torque FANUC motors use two contactors (often designated KM1 and KM2) to switch between Star and Delta configurations.
Once the cause of the alarm has been identified and addressed, the alarm can be reset. The procedure for resetting the FANUC 7115 alarm varies depending on the specific machine model and control system. Typically, the alarm can be reset by:
The FANUC 7115 alarm is a common error code encountered on FANUC-controlled CNC machines. By understanding the causes and symptoms of the alarm, machine operators and maintenance personnel can quickly troubleshoot and resolve the issue. Regular maintenance and checks can help prevent the alarm from occurring, ensuring optimal machine performance and extending the lifespan of the spindle motor and other components.
The printed on the front of the malfunctioning amplifier module. fanuc 7115 alarm
Check for physical debris, dried coolant, or weld slag jamming the switch mechanism.
: Another device on the network is using the same IP address as the robot or the target device.
Instead, slow down, look at the specific line number, and check for typos or unsupported features. 9 times out of 10, you’ll find an extra period, a stray letter, or a missing decimal.
Locate the battery housing. This is usually found behind a plastic door on the FANUC servo amplifier module inside the main electrical cabinet, or in a separate external battery box. Use a digital multimeter to test the DC voltage of the battery pack. If it reads below the specified threshold (e.g., below 5.5V for a 6V pack), it must be replaced. Step 2: Replace the Battery Safely The FANUC 7115 alarm can be triggered by
The internal circuitry or the control printed circuit board (PCB) on the servo amplifier is failing.
: This is the most frequent culprit. If the 24VDC power supply (often manufactured by brands like Izumi) that powers the relay and contactor coils fails, the switching circuit cannot operate.
: This alarm often appears alongside others, such as EX0099 (Panel Alarm) or SV449 (High Current) . Solving the primary power issue (like the 24V supply) often clears these concurrent alarms simultaneously.
Here is where I find the problem 99% of the time: Typically, the alarm can be reset by: The
Verify the output of the 24VDC power supply units in the cabinet. Fluctuating or low voltage can trigger intermittent 7115 errors. Inspect Contactors: Manually check and test the high/low gear or winding contactors
Internal circuitry failures within the servo drive can prevent the battery voltage from reaching the pulse coder.
The , specifically displayed as "7115 SPN 1: SP SWITCH CONTROL ALARM," indicates a failure in the spindle speed switching sequence. It primarily occurs when the spindle speed switching contactors fail to pull in or engage correctly during power-on or operation. Meaning of the 7115 Alarm