User Manual
EM100 Mini Inverter
106
¾
Install noise filter on input and output side of inverter.
¾
Shield cable with a metal tube, and place the inverter in a metal case.
¾
Inverter and motor shall be grounded reliably. The main circuit and the control circuit
should be separated in terms of wiring. Control circuit should take shielded wire, and see
Chapter 3 for wiring.
7.2.7 Leakage Circuit Breaker for Leakage Protection
●
When inverter runs, the leakage circuit breaker is triggered for leakage protection.
Since inverter outputs high frequency PWM signal, it will generate high frequency leakage
current. Select a special leakage circuit breaker with a trigger current
≥
30mA, or a regular
leakage circuit breaker with a trigger current
≥
200mA and the action time
≥
0.1S.
7.2.8 Mechanical Vibration
●
The fixed frequency of mechanical system resonates with the carrier frequency of
inverter.
The machine resonates sharp noise due to the resonance between the fixed frequency of
mechanical system and the carrier frequency of inverter. Adjust the carrier frequency
F00.17 to avoid resonant frequency.
●
The fixed frequency of mechanical system resonates with the output frequency of
inverter.
¾
The fixed frequency of mechanic system resonates with the output frequency of inverter
which will generate mechanical noise.
¾
Adjust F05.13 oscillation suppression parameters to clear mechanical vibration.
¾
Install the anti-vibration rubber on the chassis of motor or take some other anti-vibration
measures.
●
PID Control Oscillation
Improper setting of adjusting parameters P, Ti and Td of PID controller, reset PID
parameters.
7.2.9 Inverter Stops Output While Motor Runs
●
Insufficient DC brake at stop
¾
DC brake torque at stop is too small, increase setting value of DC brake current at stop
(F04.07).
¾
DC brake time is too short at stop, increase setting value of DC brake time (F04.09).
7.3.10 Output Frequency Does Not Output as per the Setting Frequency
●
The setting frequency exceeds the upper limit frequency
When the setting frequency exceeds the setting value of upper limit frequency, output
frequency outputs as per the upper limit frequency. Reset the setting frequency to make it
within the range of upper limit frequency, or check whether F00.11 and F00.12 are proper.
