5-3 Surge absorber
In order to prevent malfunction, provide the surge absorber on the
coils of the electromagnetic contactors, relays and other devices
which are to be used adjacent of the inverter.
5-4 Cable size and length
If the inverter is connected to a distant motor (especially when low
frequency is output), motor torque decreases because of voltage
drop in the cable. Use sufficiently heavy wire.
Changing the carrier frequency reduce RF1 noise and leakage
current. (Refere to the table below)
5-5 Wiring and cautionary points
A. Main circuit
1. Don
’t connect the cables of the power supply side to the W, V and
U output terminals for the motor.
2. Don
’t connect any electromagnetic contactor between the
inverter and motor. If it is inevitable, turn on the contactor when
both the inverter and motor are both at stand still.
3. Don
’t put the advance phase capacitor between the inverter and
motor.
4. Put MCCB in the input power supply.
18
Distance
INVERTER→ MOTOR
under
25M
under
50M
under
100M
above
100M
MS2 SERIES
under
16KHZ
under
10KHZ
under
5KHZ
under
2.5KHZ
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