Noise Killer - Toshiba TOSNUC 92 Connection Manual

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3.6.3

Noise Killer

In the machine and power drive panel, AC/DC solenoid valves, AC/DC relays and

motors are used. At the time of ON/OFF, these can generate pulse voltage of large

energy through inductance of coil, and cause dielectric in cables, etc., giving

disturbance to the electronic circuit.

To reduce this pulse voltage, use a spark killer for AC or a diode for DC.

(1)

(2)

AC relay, contactor coil

(3)

3-phase AC induction motor

Diode

Fig. 3.6.2

Spark killer

Fig. 3.6.3

3-phase spark killer

Fig. 3.6.4

– 47 –

–

Motor

STE 73843

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