HMI & peripherals
Line Filter
Suppresses electrical noise generated by the drive system from feeding back into the plant power supply.
The line filter suppresses high-frequency electrical noise generated by the servo amplifier's switching action, preventing that noise from feeding back into the plant power supply and interfering with other equipment on the same circuit.
This is largely a passive component, but its effectiveness degrades if internal components drift out of tolerance with age or if it is undersized relative to the drive system's actual switching noise output.
A missing or failed line filter often shows up as unexplained interference on other nearby equipment rather than as a fault on the robot itself, which can make it a tricky root cause to trace.
Related components
Common questions
- What does the Line Filter do?
- Suppresses electrical noise generated by the drive system from feeding back into the plant power supply.
- How does the Line Filter fail?
- Common failure modes: Component drift reducing filtering effectiveness with age, Internal component failure from a voltage surge, Undersized filter allowing noise to affect nearby equipment, Loose terminal connections reducing filter performance.