ELBC

ELBMg

FWY

RVY

CSY

R(L1)

 

(T1)U

S(L2)

 

(T2)V

T(L3)

(T3)W

H

 

 

 

 

O

 

 

 

 

L

 

 

 

 

FW

 

 

 

AL1

RV

 

 

 

AL2

 

 

 

CS

 

 

 

AL0

 

 

CM1

 

 

 

 

 

 

 

 

 

Mg1

THRY

IM

Mg2

NOTE 1: When the ELB trips due to a ground-fault, the commercial power source circuit will not operate. Therefore, when a backup is necessary, take a commercial power source circuit from the ELBC.

NOTE 2: Use weak current relays for FWY, RVY, and CSY. Separate AC relays from DC relays. The above sequence is a reference drawing for timing.

Mg

Mg1 ON

Mg2

CS

FWY RVY

Inverter running start

ON

➤ ➤

Mg1 and Mg2 interlocking time

 

 

ON

Set time by timer 2C

ON

(The time is generally set to 1 to 3 seconds. Error may come when the set time is 4 seconds or more.)

OFF

20 ms or more

 

 

ON

 

[F-22] IPS WAIT

 

Running

Connection example diagram and timing for commercial power source switching running

A-18

Page 130
Image 130
Hitachi J300U Series instruction manual Elbc