Connection Example Diagram And Timing For Commercial Power Source Switching Running - Hitachi J300 Series Instruction Manual

ELBC
ELB
Mg
Mg1
ON
Mg2
CS
FWY RVY
Inverter running
start

Connection example diagram and timing for commercial power source switching running

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Mg
R(L1) (T1)U
S(L2) (T2)V
T(L3) (T3)W
H
O
L
FWY
AL1
FW
AL2
RV
RVY
AL0
CS
CSY
CM1
ON
Mg1 and Mg2 interlocking time
ON
Set time by timer 2C
(The time is generally set to 1 to 3 seconds. Error may come when the set time is 4 seconds or more.)
ON
OFF
20 ms or more
ON
[F-22] IPS WAIT
Running
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.
A-18