Mitsubishi 20-L Specifications download pdf (Page 23)

Dec. 20

Mitsubishi IPM-series Application Note

9. Using IPM

9-1 Applications of IPML-series to Motor drive

(ex. 7in1 PM**RLA/RLB060, PM**RLA/RLB120)

Notes for stable and safe operation ;

Design the PCB pattern to minimize wiring length between photo-coupler and IPM's input terminal, and

also to minimize the stray capacity between the input and output wirings of photo -coupler.

Connect low impedance capacitor between the Vcc and GND terminal of each fast switching photo -coupler.

Fast switching photo -couplers : tpLH, tpHL

0.8

s, Use High CMR type.

Slow switching photo -coupler : CTR

㧪

100%

Use 3 isolated control power supplies ( V

). Also, care should be taken to minimize the instantaneous

voltage charge of the power supply.

Make inductance of DC bus line as small as possible, and minimize surge voltage using snubber capacitor

between P and N terminal.

Use line noise filter capacitor ( ex. 4.7nF ) between each input AC line and ground to reject common

-mode noise from AC line and improve noise immunity of the system.

Using IPM

(ex. 6in1 PM**CLA/CLB060, PM**CLA/CLB120)

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Mitsubishi 20-L Specifications Page 23