Capacity Control Pressure Setting Conditions - Hitachi NEXT Series Instruction Manual

3. OPERATING PROCEDURE [How to Use the Digital Monitor]
7 segment
Function
display
F022
F023
Pressure
setting 1
※ 2
F024
F025
V type
F031
F032
Pressure
setting 2
※ 2
F033
F034
F023
Pressure
setting 1 F024
※ 2
F025
Fixed
speed
type
F032
Pressure
setting 2 F033
※ 2
F034
Shutdown history clear F041 (＊1)
Note:
※ Setting of the items without ※ in remarks can be memorized while the air compressor is stopped.
＊1: When set to "1", history is cleared. After clearing, the value is automatically reset to "0".
＊2: Refer to the below table about the Capacity control pressure setting conditions.
Do not change the setting of F items that are not specified in the table above.
● Capacity control pressure setting conditions
Type
Fixed-speed
① F023 shall be set F024 +3 psi (0.02 MPa) or higher, and F025+3 psi (0.02 MPa) or higher.
① F023 shall be set F022+3 psi (0.02 MPa) or higher.
Variable-speed
② F024 and F025 shall be set F022 or lower.
Note 1: The same setting condition is applied for Pressure Setting 2 (F031 to F034).
IMPORTANT
1. Pressure setting when minimum air receiver tank is installed (
Vtype : Pressure differential between cut-out and cut-in shall be 7 psi (0.05 MPa) or more, and pressure differential between
cut-out and target shall be 3 psi (0.02 MPa) or more.
Fixed speed type : Pressure differential between cut-out and cut-in shall be 15 psi (0.1 MPa) or more.
2. External selection of Cut-in/Cut-out pressure combination 1 or 2 is an option. (F018-2)
28
Item
Control pressure 71 〜 125
setting 1 psi (MPa) (0.5 〜 0.86)
Cut-out pressure 1 71 〜 128
psi (MPa) (0.5 〜 0.88)
71 〜 122
Cut-in pressure 1
psi (MPa) (0.5 〜 0.84)
71 〜 122
Restart pressure 1
psi (MPa) (0.5 〜 0.84)
71 〜 125
Control pressure2
(0.5 〜 0.86)
psi (MPa)
Cut-out pressure 2 71 〜 128
(0.5 〜 0.88)
psi (MPa)
Cut-in pressure 2 71 〜 122
(0.5 〜 0.84)
psi (MPa)
Restart pressure 2 71 〜 122
psi (MPa) (0.5 〜 0.84)
Cut-out pressure 1 71 〜 100 [125]
psi (MPa) (0.5 〜 0.69 [0.86])
Cut-in pressure 1 73 〜 86 [110]
psi (MPa) (0.5 〜 0.59 [0.76])
Restart pressure 1 73 〜 86 [110]
psi (MPa) (0.5 〜 0.59 [0.76])
Cut-out pressure 2 73 〜 100 [125]
psi (MPa) (0.5 〜 0.69 [0.86])
Cut-in pressure 2 73 〜 86 [110]
psi (MPa) (0.5 〜 0.59 [0.76])
Restart pressure 2 73 〜 86 [110]
psi (MPa) (0.5 〜 0.59 [0.76])
History clear
Setting conditions (Example of Pressure setting 1)
Precision/
Range
unit
1psi
(0.01MPa)
1psi
(0.01MPa)
1psi
(0.01MPa)
1psi
(0.01MPa)
1psi
(0.01MPa)
1psi
(0.01MPa)
1psi
(0.01MPa)
1psi
(0.01MPa)
1psi
(0.01MPa)
1psi
(0.01MPa)
1psi
(0.01MPa)
1psi
(0.01MPa)
1psi
(0.01MPa)
1psi
(0.01MPa)
0 〜 1 1
5.4.4)
Default Remarks
125
(0.86)
128
(0.88)
120
(0.83)
120
(0.83)
※ S etting can be altered at
any time.
125
(0.86)
128
(0.88)
120
(0.83)
120
(0.83)
100 [125]
(0.69 [0.86])
85 [110]
(0.59 [0.76])
85 [110]
(0.59 [0.76])
※ S etting can be altered at
any time.
100 [125]
(0.69 [0.86])
85 [110]
(0.59 [0.76])
85 [110]
(0.59 [0.76])
0 0：Enter, 1：History clear