Frequenty Asked Questions

(1) The harmonic interference between input side of AC drive grid system:
a: Add input filter capacitors absorb board to the input side of AC drive.
b: Add a magnetic ring on the power cable (220V power supply)add single-phase filter isolating transformer.
c: AC drive should be independently grounded.

(2) The interference between output side of AC drive delicate instrument:
a: Add magnetic rings to the three-phase cables of output side of AC drive. Please put more rings add filters.
b: Add magnetic rings to test output signal cables before they are connected to signal processing board signal collecting system.
c: On the signal processing board, please connect ceramic capacitor in parallel between two disturbed signal cables.
d: Separate signal cables power cables,please adopt shielding cable for signal cable.
e: Please decrease carrier-wave value correctly.