Hitachi SJ Series, User Manual

Page: 372 / 786

12-17-11
Chapter 12 Inverter Functions
Example of Energy Saving on the Primary Side
Contactor
(AF120 = 01: Enabled (Primary Side)
• Reduce standby power in combination with the
control power supply DC24V input.
• Connecting the auxiliary contact MC for the main
circuit power supply to the setting terminal of the
output terminal function [CON] shuts off the power
input to the inverter main circuit while the inverter
output is suspended to implement the operation
sequence for energy saving.
The inverter waits for the output until the start
waiting time passes.
It turns on the contactor control signal 039[CON]
at the same time.
The operation varies depending on whether the
contactor check signal 112[COK] is set to the
input terminal function.
With
[COK]
setting
If the 112[COK] is not turned on during the
contactor check time, the inverter trips with the
[E110] contactor error.
Without
[COK]
setting
After the contactor control signal 039[CON] is
turned on, there is a waiting time for the start
waiting time to pass.
After the start waiting time passes, there is an
acceleration.
After the inverter stops the output, there is a
waiting time for the contactor release delay time
to pass.
After the contactor release delay time passes,
the contactor control signal 039[CON] is turned
off.
The operation varies depending on whether the
contactor check signal 112[COK] is set to the
input terminal function.
With
[COK]
setting
If the 112[COK] is not turned off during the
contactor check time, the inverter trips with the
[E110] contactor error.
Without
[COK]
setting
The inverter still does nothing.
▼
(1)
(2)
(3)
(4)
(5)
(6)
Operation
command
Output
frequency
Contactor control signal
039[CON]
Contactor check time
Contactor check signal
112[COK]
(2)
(1)
Start
waiting
time
Contactor check time
(4)
Contactor release delay time
Inverter outputting
(5)
(3)
(6)
M
R
S
T
U
V
W
[FW]
[RV]
COM
FW
RV
P+
P-
DC24
V
[CON]
MC