Pressure Setting Switching Function; Ecomode Function; Setting Of Ecomode; Energy Saving Effect - Hitachi NEXT Series Instruction Manual

3.4.7 Pressure Setting Switching Function

Two different combinations of cut-out pressure and cut-
in pressures can be used: Pressure combination 1 and
2. The Combination 1 is used as the standard daily
settings. The Combination 2 is used for a limited time
period where different settings may be required, and
can be set for a certain time
( and 3.4.2)
3.3.5
Load light turns on (glowing) during load and turns off
during unload when pressure combination 1 is
selected. Load light turns on (blinking) during load and
turns off during unload when pressure combination 2 is
selected. ECOMODE and PQ wide mode is invalid
during pressure combination 2 is activated.
Exter nal selection of Cut-in/Cut-out pressure
combination 1 or 2 is an option. (F018-2). Contact the
local HITACHI distributor/master dealer or
representative office.
3.4.8 ECOMODE Function (only for Fixed speed type)
(1) Setting of ECOMODE (Energy Saving Mode)
ECOMODE is set OFF on factor y setting. See
SELECT/WIDE button in page 13 to be activated.
This function enables a power saving operation by
reducing the cut-out pressure to a preset target
value, based on if the load/unload cycling interval is
longer than the set interval. If the cycling interval
time is longer than set interval, the system reduces
the cut-out pressure to a target so as to make the
cycling interval closer to the set value. Minimum
cut-out pressure is cut-in pressure + 7 psi (0.05
MPa). Minimum cycle time is 30 seconds.
If the cycle time is 30 seconds or more, SELECT/
WIDE light tur ns on (blinking) to indicate
ECOMODE is effective. By setting the ECOMODE
to ON, the display's TYPE field shows SAVE for a
power saving operation. (
(2) Caution for using ECOMODE
Larger than standard air receiver tank is required to
keep the ECOMODE effective. (
3. OPERATING PROCEDURE [How to Use the Digital Monitor]
3.3.2)
5.4.4).

Energy Saving Effect

Cut-out
press.1
Cut-out
press.2
Cut-in
press.1
Load Unload
Cut-in
press. 2
Glow OFF Glow
Load light
OFF
External contact (option)
Ｒ ＵＮＮ Ｉ ＮＧ ＣＯＮ Ｔ Ｒ Ｏ Ｌ
Ａ Ｌ Ａ ＲＭ
Ｒ Ｅ Ｓ Ｅ Ｔ
Ｆ ＵＮＣ
Ｒ ＥＭＯ Ｔ Ｅ Ｓ Ｅ Ｌ Ｅ Ｃ Ｔ／Ｗ Ｉ Ｄ Ｅ
１
Ｓ Ｔ Ｒ
Energy Saving Effect
Cut-out
pressure
Cut-in
pressure
Load Unload
Factory setting
Pressure differential between cut-in and cut-out pressure: 15 psi (0.1MPa)
Allowable pressure differential for ECOMODE: 7 psi (0.05MPa) (unable to change)
Minimum cycle time: 30 seconds
OFF Glow OFF Blink OFF
Blink Blink
ON
Time
SELECT/WIDE
１
ON : The light blinks.
OFF : The light turns off.
SELECT/WIDE
Press the button for 7 sec-
onds or more to set.
Cut-out is
automatically
reduced.
Time
31