Standard Specification (55-75kW)

Hitachi Rotary Screw Compressors

Model
OSP-55VA(R)N2 OSP-75VA(R)N2 OSP-55VW(R)N2 OSP-75VW(R)N2
Item Unit
Cooling Method - Air-Cooled Water-Cooled
kW 55 75 55 75
Nominal Output
HP 75 100 75 100
MPa 0.7
Discharge Pressure
PSI 102
Rated
m3/min 10.1 13.3 10.1 13.3
Discharge Capacity
CFM 357 470 357 470
MPa 0.6 0.85 0.6 0.85 0.6 0.85 0.6 0.85
PQ Discharge Pressure
PSI 87 123 87 123 87 123 87 123
WIDE
MODE Discharge Capacity
m3/min
CFM
10.6
374
9.1
321
14.0
494
12.0
424
10.6
374
9.1
321
14.0
494
12.0
424
(7.5-75kW)
Intake Air Pressure/Temperature - Atmospheric Pressure / 0-45 (2-45 )
Discharge Temperature Ambient Temperature +15 or below Water Temperature +13 or lower
Driving Method - DCBL Direct Drive
Starting Type - Soft Start
Lubricating Oil - NEW HISCREW OIL NEXT
Lubricating Oil Quantity L 28 (Not filled) 39 (Not filled) 17 (Not filled) 22 (Not filled)
P.D.P [10 (Under Pressure)]
[Dryer] Refrigerator Nominal Output kW [2.2] [3.0] [2.2] [3.0]
Refrigerant - [R410A]
Temperature - 35 or below
Cooling
Quantity - 100 125
Water
Discharge Pipe Diameter - Rc 2
Discharge Pipe Diameter Rc 2
Dimension (W×D×H) mm 2,000×1,200×1,800
Weight kg 1,230 (1,350) 1,405 (1,555) 1,070 (1,190) 1,240 (1,390)
Sound Level dB [A] 64 66 63 65

Model OSP-55M5A(R)N2 OSP-75M5A(R)N2 OSP-55M5W(R)N2 OSP-75M5W(R)N2

Item Unit OSP-55M6A(R)N2 OSP-75M6A(R)N2 OSP-55M6W(R)N2 OSP-75M6W(R)N2
Cooling Method - Air-Cooled Water-Cooled
kW 55 75 55 75
Nominal Output
HP 75 100 75 100
MPa 0.7<0.85>[1.0]
Discharge Pressure
PSI 102<123>[145]
Rated
m3/min 10.0<9.0>[8.3] 13.2<11.9>[10.9] 10.0<9.0>[8.3] 13.2<11.9>[10.9]
Discharge Capacity
CFM 353<318>[293] 466<420>[385] 353<318>[293] 466<420>[385]
Intake Air Pressure/Temperature - Atmospheric Pressure / 0-45 (2-45 )
Discharge Temperature Ambient Temperature +15 or below Water Temperature +13 or lower
Driving Method - 2-Pole TEFC Motor with Gear Driving
Starting Type - Star-Delta
Lubricating Oil - NEW HISCREW OIL NEXT
Lubricating Oil Quantity L 29 (Not filled) 40 (Not filled) 17 (Not filled) 22 (Not filled)
P.D.P [10 (Under Pressure)]
[Dryer] Refrigerator Nominal Output kW [2.2] [3.0] [2.2] [3.0]
Refrigerant - [R410A]
Temperature - 35 or below
Cooling
Quantity - 100 125
Water
Discharge Pipe Diameter - Rc 2
Discharge Pipe Diameter Rc 2
Dimension (W×D×H) mm 2,000×1,200×1,800
Weight kg 1,500 (1,620) 1,755 (1,905) 1,340 (1,460) 1,590 (1,740)
Sound Level dB [A] 65 67 64 66
Notes:
1. Capacity is measured according to ISO 1217, Third Edition, Annex C. 5. Contact the supplier for the dryer and filters selection at PQ wide mode ON .
Capacity after the built-in dryer is decreased by 3%. 6. The transformer installation space is required for the built-in dryer for the model
2. Pressures are indicated as the gauge pressure. other than 200V/50Hz, 200-220V/60Hz.
3. Sound Level is the converted value under the condition of 1.5m in front and 1m height in an 7. Do NOT use any oil other than “NEW HISCREW OIL NEXT” .
anechoic room. It may vary in different operating conditions and/or different environments with echo 8. Install the proper size air receiver tank and the earth leakage circuit breaker which
of actual field installations. are out of scope of supply from Hitachi.
Sound level may be increased by 3dB at PQ WIDEMODE ON. 9. Install the air compressor indoors and avoid flammable and corrosive environment,
4. P.D.P is measured at 30 degree C of the ambient temperature, 45 degree C of the dryer inlet moisture and dust.
temperature and rated discharge pressure.
55/75kW P.D.P may be 13 degree C at PQ WIDEMODE ON and 0.6MPa of discharge pressure.
P.D.P may be worth at the lower discharge pressure than above conditions at PQ WIDEMODE ON .

ISO14001 ISO9001
EC97J1107 JQA-QM3443
Hitachi Screw Compressor is manufactured at a factory approved by Environmental Standard
(ISO 14001) and Quality Standard (ISO9001) of International Organization for Standardization.

E188P 0516
 IPC Control (Intelligent Pressure Control) (22-75kW)
By estimating use point pressure in accordance with air consumption, IPC control decreases discharge pressure during low load
operation, which enables Energy-Saving.
Patent JP4425768 and others
Example of effect by IPC

Conditions Air compressor: OSP-37VAN2 Control pressure setting: 0.70MPa Use point pressure during full load: 0.55MPa
Piping pressure loss during full load: 0.15MPa

Graph of pressure change (Theoretical values)

More Efficiency IPC-OFF (Conventional inverter control model) IPC-ON (NEXT II series)

Fit to Improve Productivity Control the air compressor discharge pressure at 0.70MPa
0.75
Air Compressor Discharge Pressure
Control the use point pressure at 0.55MPa
0.75
Effect by Energy Air Compressor 100

Higher Level of User-friendly

Energy Consumption Ratio (%)

Saving Discharge Pressure Condition:
0.70 0.70 98 Air Consumption
Approx. 0.05MPa Ratio 60%

Pressure (MPa)

Pressure (MPa)
∆P 0.15MPa

∆P 0.15MPa
96
0.65 0.65 Approx. 0.10MPa Energy
Decrease possible 94
Use Point Pressure Saving by 7.5%
0.60 0.60 92

90
0.55 0.55
Unnecessary Pressure Use Point 0
0 0
Pressure
0 20 40 60 80 100 0 20 40 60 80 100

Full Range Loaded with High Efficiency Motor Air Consumption Ratio (%) Air Consumption Ratio (%)
*Due to estimation control, use point pressure varies in accordance with use conditions.
*IPC control range of the constant speed unit is air consumption ratio of 50% or more.

New Developed Air-End Multi-Function Touch Panel (22-75kW)

Hitachi Latest Innovation of Air-End Technology Significant Improvement of User-friendly Various Functions Available Operation Data Logging
Menu

Main Functions
(22/37kW)

Schedule Operation (Weekly Timer)

Conventional Instantaneous Power Interruption
Conventional (IPI) Restart Function
Alternate Operation (Option)
Multi-unit Control (Option)
15kW 2.1 2.1 2.5%up 2.15 2.15 AUTO Operation
55kW 10.0 9.8 2%up 10.1 10.0 Communication Function
*The image described above has been modified. Web Server Function
Display/Store of Operation Data
22kW 4.0 3.9 2.5%up 4.1 4.0 Monitor Indication Notice Indication E-MODE Store/Load of Settings
Maintenance Time Notification
Operation Data Memory, Display in
75kW 13.2 13.0 1.5%up 13.3 13.2 Graph
37kW 6.6 6.5 3.0%up 6.8 6.7 Display of Shutdown and Alarm
History

IT Communication Functions (22-75kW)

High Efficiency Capacity Control
USB Flash Memory Possible for Data Logging
USB flash memory (data retrieving)
*Necessary to prepare a USB flash memory device (5.5 cm or smaller) on user’s side. (Standard) pressure/temperature/current/history/time
*Operation data for one day is approximately 400kB. (For reference)

Color Touch Panel

Web Server Function via Bluetooth®
Since Constant Pressure Control allows highly precise pressure On M type models, I+P control (purge + motor auto START/STOP) *Necessary to prepare a Bluetooth® USB dongle on your side.
control within range of ±0.01MPa, supply of compressed air at is applicable during partial load operation. Also, Energy-Saving can *For setting changes, part of the items are applicable.
necessary pressure is possible with high efficiency. be achieved by loading High-Efficiency motor.
Modbus® Communication
Example of Annual Power Consumption (75kW) Open network serial communication Modbus®/RTU is
Bluetooth® Dongle Tablet terminal device
supported as standard
500 Approx. 9.5MWh *Modbus®/TCP support is optional.
Energy-Saving Effect Reduction
479MWh
0.69 469MWh
USB connector
Pressure (MPa)

450
Calculation Condition: LAN Modbus®/TCP
0.59
415V/50Hz,
±0.01MPa Air Compressor Load Ratio at 90%,
Constant Pressure Control 0
6,000h/year Operation Time,
Model loaded with Model loaded with
conventional motor High-efficiency motor Bluetooth is the registered trademark of Bluetooth SIG, Inc (US).
Time Except auxiliary equipment Modbus is the registered trademark of Schneider Automation Inc.
 Versatility in Hitachi Original Technology Standard Specification (7.5-37kW)

PQ WIDE MODE
MPa Pressure Increase
0.9 Model
PQ WIDE MODE, by automatically adjusting the maximum OSP-7.5VA(R)N2 OSP-11VA(R)N2 OSP-15VA(R)N2 OSP-22VA(R)N2 OSP-37VA(R)N2
Item Unit I
rotation speed of the compressor, enables to increase the Cooling Method - Air-Cooled C
discharge FAD in case that the pressure declines. Compared to 0.7
Nominal Output
kW 7.5 11 15 22 37
N
HP 10 15 20 30 50
conventional VSD, compressor is possible to operate at a wider

FAD Increase
Pressure
MPa 0.83 0.7
range of pressure (P) and FAD (Q). 0.6 Conventional VSD Discharge Pressure
PSI 120 102
Rated R
m3/min 1.05 1.63 2.15 4.1 6.8
Discharge Capacity
CFM 37 58 76 145 240
0.5
MPa 0.7 0.9 0.7 0.9 0.7 0.9 0.6 0.85 0.6 0.85
0.45 PQ Discharge Pressure P
PSI 102 131 102 131 102 131 87 123 87 123
Pressure Decline WIDE
m3/min 1.17 0.96 1.79 1.53 2.4 2.04 4.3 3.6 7.1 6.2
W
Conventional MODE Discharge Capacity M
CFM 41 34 63 54 85 72 152 127 251 219
0 VSD
100 105 Intake Air Pressure/Temperature - Atmospheric Pressure / 0-45 (2-45 ) In
Air Consumption Ratio Ambient Temperature/ +15 or below
Discharge Temperature D
FAD at PQ WIDE MODE Driving Method - Inverter + 4-Pole TEFC Motor with V-Belt Drive DCBL Direct Drive D
7.5-15kW 22/ 37kW 55/75kW Starting Type - Soft Start S
% Discharge Pressure
MPa 0.5 0.6 0.7 0.85 0.9
Discharge Pressure
MPa 0.45 0.50 0.60 0.70 0.85
Discharge Pressure
MPa 0.45 0.50 0.60 0.70 0.85
Lubricating Oil - NEW HISCREW OIL NEXT L
Model Model Model Lubricating Oil Quantity L 5 6 7 10 15 L
7.5kW 1.17 1.17 1.17 1.05 0.96 22kW 4.3 4.3 4.3 4.1 3.6 55kW 10.6 10.6 10.6 10.1 9.1 P.D.P [10 (Under Pressure)]
[Dryer] Refrigerator Nominal Output kW/HP [0.3/0.4] [0.5/0.7] [1.3/1.8] [1.5/2.0] [D
11kW 1.79 1.79 1.79 1.63 1.53 37kW 7.1 7.1 7.1 6.8 6.2 75kW 14.0 14.0 14.0 13.3 12.0 Refrigerant - [R407C] [R410A]
15kW 2.4 2.4 2.4 2.15 2.04 Unit: m3/min. Discharge Pipe Diameter - Rc 3/4 Rc 1 Rc 1-1/2
C
Dimension (W×D×H) mm 860×770×1,175 950×780×1,250 1,000×1,050×1,550 1,200×1,150×1,650
W
Weight kg 300 (320) 360 (385) 390 (415) 450 (510) 670 (740)
ons. Sound Level dB [A] 53 55 56 56 60 D
e. D
Various System Combinations with W
S
Model OSP-7.5M5A(R)N2 OSP-11M5A(R)N2 OSP-15M5A(R)N2 OSP-22M5A(R)N2 OSP-37M5A(R)N2
To respond to the change of air use, Hitachi provides various system combinations with VSD for further Energy-Saving.
Item Unit OSP-7.5M6A(R)N2 OSP-11M6A(R)N2 OSP-15M6A(R)N2 OSP-22M6A(R)N2 OSP-37M6A(R)N2
Cooling Method - Air-Cooled
V-M Combination System Single-V System/Multi-V System kW 7.5 11 15 22 37
Nominal Output I
If 2 or 3 compressors are necessary, Hitachi V-M combination Besides V-M Combination System, Energy-Saving is also HP 10 15 20 30 50
MPa 0.83 0.7 <0.85> [1.0] C
system is your excellent choice. There is great merit on Hitachi possible with any combination such as Single-V multi-unit Discharge Pressure
PSI 120 102 <123> [145]
Rated N
V-M combination system which divides 1 compressor into 2. control system, or Multi-V multi-unit control system etc. m3/min 1.05 1.63 2.15 4.0 <3.5> [3.2] 6.7 <6.0> [5.4]
Discharge Capacity
CFM 37 58 76 141 <124> [113] 237 <212> [191]
Intake Air Pressure/Temperature - Atmospheric Pressure / 0-45 (2-45 ) R
Discharge Temperature Ambient Temperature/ +15 or below
Example Effect of V-M Combination System Driving Method - 4-Pole TEFC Motor with V-Belt Drive
Starting Type - Direct-on-line Star-Delta In
1 Energy consumption is similar to the one of 75kW V plus. 200 Lubricating Oil - NEW HISCREW OIL NEXT D
D
2 Power consumption is saved by 39% or 164MWh/year, Lubricating Oil Quantity L 5 6 7 10 15
P.D.P [10 Under Pressure)] S
when the air consumption ratio is 60% at pressure of 0.6MPa.
Power Consumption Ratio

[Dryer] Refrigerator Nominal Output kW/HP [0.3/0.4] [0.5/0.7] [1.3/1.8] [1.5/2.0] L

Refrigerant - [R407C] [R410A] L
Calculation condition: 6,000h/year running Conventional
Suction Throttle Discharge Pipe Diameter - Rc 3/4 Rc 1 Rc 1-1/2
Dimension (W×D×H) mm 860×770×1,175 950×780×1,250 1,000×1,050×1,550 1,200×1,150×1,650 [D
Control
100 Weight kg 295 [315] 355 [380] 375 [400] 670 [730] 970 [1,040]
Sound Level dB [A] 53 55 56 57 60 C
Notes: W
1. Capacity is measured according to ISO 1217, Third Edition, Annex C.
D
Capacity after the built-in dryer is decreased by 3%.
2. Pressures are indicated as the gauge pressure. D
3. Sound Level is the converted value under the condition of 1.5m in front and 1m height in an anechoic room. W
0 It may vary in different operating conditions and/or different environments with echo of actual field installations. S
100 200 Sound level may be increased by 3dB at PQ WIDEMODE ON. No
37kW 37kW Air Consumption Ratio 4. P.D.P is measured at 30 degree C of the ambient temperature, 45 degree C of the dryer inlet temperature and rated 1.
discharge pressure.
7.5/11/15kW P.D.P may be 13 degree C at PQ WIDEMODE ON and 0.7MPa of discharge pressure. 2.
22/37kW P.D.P may be 13 degree C at PQ WIDEMODE ON and 0.6MPa of discharge pressure. 3.
P.D.P may be worth at the lower discharge pressure than above conditions at PQ WIDEMODE ON .
High Reliability 5. Contact the supplier for the dryer and filters selection at PQ WIDEMODE ON .
6. The transformer installation space is required for the built-in dryer for the model other than 200V/50Hz, 200-220V/60Hz.
7. Do NOT use any oil other than “NEW HISCREW OIL NEXT” . 4.
8. Install the proper size air receiver tank and the earth leakage circuit breaker which are out of scope of supply from Hitachi.
Up to 50 Package Filter as Standard NEW HISCREW OIL NEXT 9. Install the air compressor indoors and avoid flammable and corrosive environment, moisture and dust.

Standard up to 45 Easy maintenance Designed for screw air compressor.

Operation is possible under 50 Maintenanse information is indicated Oil change cycle is every 2 years
on the touch panel periodically. or 12,000hr which comes first.

vice Operation Alarm Trip

Conventional
Model Operation Alarm Trip

40 45 50
Ambient Temperature

* Ambient temperature alarm will be indicated when ambient

temperature is over 45 .
S). Continuous operation at higher than 45 may shorten lifetime
Inc. of lubricating oil and electric parts.