Hitachi NEXT Series User Manual

77
8. STANDARD COMPONENTS AND SUBSYSTEMS [Capacity Control System]
Starting and
Pressure
Raising
Loading Unloading Loading
Air Receiver Pressure
Air discharge pressure
after aftercooler
Pressure
Time
100
87
15
psi
⑵ Optional AUTO Operation
（1） Stop Delay
(10 minutes)
（2） Stop Delay
(30% load)
（3） Start Delay
(15 seconds)
Starting
and
Pressure
Raising
Loading
Repeated
Loading/Unloading
Automatic
Motor Stop
Air Receiver Pressure
Air discharge pressure
after aftercooler
Pressure
Time
Automatic
Motor Restart
Indications on LCD
100
87
15
psi
⑴ Stop Delay Time-Requires 15 seconds
of motor operation to sufficiently cool
down the motor.
If the third stop is done after 70
minutes or more has passed after
the first stop, the motor continues
to operate for 20 minutes after
restart of the air compressor, and
then return to the initial cycle.
⑵
Stop Delay Time – The air compressor
is continually calculating a load ratio.
If the load ratio is 30% and the motor
has stopped/restarted maximum 3
times for the past 90 minutes, then
the motor stops.
⑶
Stop Delay Time – Requires 10 seconds
to completely exhaust internal
compressed air and prepare to restart.
Starting
and
Pressure
Raising
Loading Unloading
Power Save Operation
load/unload cycling interval
（standard 30 seconds）
Loading Unloading
Air Receiver
Pressure
Air discharge pressure
after aftercooler
Pressure
Time
Loading Unloading
Loading Unloading
100
87
15
psi
 ＊ 90（ minimum ）
⑶ ECOMODE Operation
(Note)
ECOMODE setting
Target pressure: 90psi (0.62 MPa)
Toad/unload cycling interval: 30 sec
The pressure with asterisk may vary
depending on the air receiver’s capacity
and the amount of air consumption.
8.4.3 Typical Change of Pressure
⑴ Standard Offline-or-Online, 0%-or-100%-Capacity, 2-Step Control


Hitachi NEXT Series Specifications

General

Brand	Hitachi
Model	NEXT Series
Category	Air Compressor
Language	English