Hitachi hitachi series inverter 사용자 설명서
96
Inverter doesn’t block the current flowing into itself when it is not powered.
This may cause
the closed circuit when two or more inverters are connected to common I/O wiring as
shown below to result in unexpected turning the on the input. This may lead to
dangerous situation. To avoid this closed circuit, please put the diode (rated:50V/0.1A)
in the path as described below.
shown below to result in unexpected turning the on the input. This may lead to
dangerous situation. To avoid this closed circuit, please put the diode (rated:50V/0.1A)
in the path as described below.
Power ON
Power ON
In case of Source logic
Jumper
wire
Inserting
diode
P24
PLC
PLC
L
1
P24
PLC
L
PLC
L
1
Switch
OFF
Power OFF
Input
ON
P24
PLC
L
PLC
L
1
P24
PLC
L
PLC
L
1
Switch
OFF
Power OFF
Input
OFF
Jumper
wire
1
Switch
OFF
Switch
OFF
Input
OFF
Input
ON
P24
PLC
L
P24
PLC
L
P24
PLC
L
P24
PLC
L
1
1
1
Jumper
wire
Jumper
wire