SINAMICS G120 troubleshooting answers
7 questions with answers cited from the manufacturer manuals.
- 0SINAMICS G120 A07910: Motor overtemperature alarm, what to check?
The SINAMICS G120 A07910 alarm indicates that the motor's measured temperature (KTY sensor) or thermal model has exceeded the alarm threshold (p0604), or a PTC/bimetal contact has responded. This is an alarm, not a fault…
- 0SINAMICS G120 F07900: Motor blocked on start, what to check?
The F07900 fault on a SINAMICS G120 indicates the motor has operated at its torque limit for longer than the configured delay time (p2177) while remaining below the speed threshold (p2175). This often points to a mechani…
- 0SINAMICS G120 CU240E-2 F07801 at start, what to check first?
The F07801 fault on a SINAMICS G120 drive indicates that the permissible motor limit current was exceeded. This often occurs at start, during acceleration, or on a load step. Common causes include switching onto a rotati…
- 0SINAMICS G120 trips F30005 after running a while, what to check?
Fault F30005 on a SINAMICS G120 indicates that the Power Module has been overloaded, meaning its I2t value (r0036) reached 100%. This typically happens when the permissible rated current is exceeded for too long or the l…
- 0SINAMICS G120 CU240E-2 F30003 during running, what to check?
Fault F30003 on a SINAMICS G120 indicates that the Power Module has detected an undervoltage condition in the DC link and has shut down. This can occur during operation if the supply voltage dips or fails, during brownou…
- 0SINAMICS G120 F30002 during ramp-down, what to check?
A SINAMICS G120 F30002 fault indicates a DC link overvoltage, meaning the Power Module detected too much voltage and tripped. This often happens during ramp-down, especially with high-inertia loads, due to regenerated en…
- 0SINAMICS G120 F30001 instantly at power-on, r0949=1: what to check?
Fault F30001 on a SINAMICS G120 indicates an overcurrent detected by the Power Module, causing an OFF2 trip. The fault value r0949 helps identify the phase involved, with bit 0 corresponding to phase U. An instant trip a…