Rotary Screw Compressors

BSD/CSD/CSDX T SFC Series

Air deliveries from 0.87 to 15.85 m3/min, Pressures 5.5 to 15 bar
 BSD, CSD and CSDX –

What do you look for in a

compressor with variable frequency
T SFC – Unrivalled Build Quality
The new BSD, CSD and CSDX
series compressors with energy-
drive and refrigeration dryer? Integrated Modular Design saving 1:1 drive form the basis
for the versatile modular concept.
As a user, you expect maximum efficiency, reliability and They are particularly efficient,
durable and reliable as each is
consistent air quality from your compressed air system. equipped a generously-sized
That may sound simple, but these advantages are influenced low-speed airend featuring
KAESER’s solution:
by many different factors: SIGMA PROFILE rotors.
Versatile modular design
Energy costs, for example, Available with a modular refrigeration
dryer and/ or SFC variable frequency
taken over the Compressor system investment
drive, BSD, CSD and CSDX rotary A
Maintenance costs
lifetime of a screw compressors fulfil every customer
requirement: they are highly energy
compressor, add T – Refrigeration dryer
efficient, quieter than quiet, require
up to a multiple minimal maintenance, are extremely BSD, CSD and CSDX com-
of investment reliable and deliver the very best in air pressors can be supplied with an
quality. integrated refrigeration dryer
costs. module as required. The com-
Furthermore, these turnkey C pressor and dryer are housed in
Efficient energy compressed air systems are
separate cabinets with individual
simple to install and offer
consumption Potential energy savings Energy costs cooling air apertures to increase
outstanding versatility.
operational reliability.
therefore plays a B
vital role in every compressed air system, as does reliability of
the compressor.
In addition, the compressed air should be free
from condensate and treated to provide the SFC – Sigma Frequency Control
9
required level of quality appropriate for the 6 The SFC variable frequency drive
7
module is available for all BSD,
specific application. These measures ensure 4
1
5 CSD and CSDX compressors.
enhanced system reliability and significantly The SFC module and the com-
pressor form a compact, hard-
reduce maintenance costs in the air 8
wired unit with a compact foot-
3 2
distribution network, pneumatic controls and print and short communication
all other associated compressed air powered paths between the control
electronics and drive motor.
equipment. Each package is delivered tested and ready to go.
1 Inlet valve
2 Electric motor
3 Airend
4 Separator with cartridge Versatile Modular Design C
B
5 Fluid cooler KAESER’s versatile range of modular design T SFC packages ensures A
that there is a model available to suit every compressed air
6 Fluid filter
requirement. The refrigeration dryer module (C) transforms a stan- A = BSD, CSD or CSDX
7 Compressed air aftercooler dard rotary screw compressor into a compact compressed air system screw compressor
8 Control cabinet - frequency that delivers quality dried-air in accordance with highest standards.
controller B = SFC
With the addition of the SFC module (B), the compressor speed can
9 Controller with industrial computer be automatically adjusted to meet varying air demand. All possible C = Refrigeration dryer
combinations of these three modules are available.
 Dependable centrifugal separator

BSD T – CSDX T with compact dryer A centrifugal separator with an

electronically controlled ECO-
DRAIN is installed between the
compressor and the dryer. This
ensures safe and efficient initial
separation and drainage of the
condensate even under conditions
of high ambient temperature and
humidity.

Refrigeration dryer with ECO DRAIN

The refrigeration dryer’s
electronically controlled ECO
DRAIN operates according to the
condensate level. This eliminates
the pressure losses associated with
conventional condensate drain
Innovative: systems and considerably
BSD T, CSD T enhances the reliability of the
and CSDX T series compressed air supply.

The new BSD T-, CSD T and CSDX T

rotary screw compressor packages meet
every customer requirement, as they
combine maximum reliability with Stainless steel plate heat exchanger
outstanding efficiency. The dryer`s stainless steel plate
With the addition of the integrated heat exchanger is resistant to
refrigeration dryer module, these corrosion, clogging and deposits.
high-performance units are transformed Even with a fluctuating airflow the
heat exchanger reliably separates
into complete air supply systems.
the accumulating condensate from
Easy to maintain, the dryer is contained the air. The dryer’s components
in its own separate housing within the and piping are designed to provide
unit to prevent exposure to heat from the exceptional operational safety and
compressor package, considerably Thermal insulation is omitted from the Thermal insulation omitted reliability.
CSD 102 T rear view
illustration.
increasing operational reliability and
enabling use in ambient operating
conditions of up to +45° C.

Ready for use SIGMA CONTROL

Contained in its own separate cabinet there is more than The SIGMA CONTROL compressor
sufficient space to allow all the components in the dryer to be controller constantly monitors the
generously sized yet easily accessible for maintenance. compressor, refrigeration dryer and
This design also prevents exposure of the refrigerant dryer to condensate drains. If required,
any heat from the compressor package. messages from the dryer can be
Individual cooling air apertures and an excellent design allow defined as alarms and forwarded
safe, reliable operation in ambient temperatures of up to to a control centre.
+45°C whilst maintaining a +3°C pressure dew point.
SFC –
Perfect performance
Ultimate efficiency even at high ambient temperatures
The generously-sized SFC module
with its efficiently-cooled control
cabinet allows trouble-free
operation in ambient temperatures
up to +45 °C.

Innovative: Precise pressure control

BSD SFC, CSD SFC and Air delivery from a BSD SFC, CSD
CSDX SFC series SFC or CSDX SFC compressor
Every KAESER rotary screw compressor

Pressure in bar
can be matched to actual air
is equipped with a large, efficient airend demand according to required
featuring high performance SIGMA PRO- system pressure by continuously
Pressure
FILE rotors. The airends in BSD, CSD ± 0.1 adjusting drive motor speed (and
bar
–
and CSDX units are powered by a direct Constant pressure
therefore the airend) within its
drive system that eliminates the trans- specified control range. Depending
Time
mission losses associated with gear on the buffer capacity of the
drive systems, enabling these com- downstream air network, it is
pressors to provide significant energy therefore possible to precisely maintain working pres-
savings. sure to within ±0.1 bar and, as a result, to reduce
maximum system pressure. This can lead to significant
Considerable savings can also be
savings, as each 1 bar reduction in pressure amounts
achieved with the addition of a SIGMA
to a 7 percent reduction in energy consumption.
FREQUENCY CONTROL (SFC) module.

Depending on the size of the compressor

installation, energy consumption in
CSDX 162 T SFC front view
larger compressed air systems can be Other variable speed KAESER SFC compressors
compressors
reduced by up to 50% .

Soft start with no current spikes

Transmission losses All packages are designed to operate at Soft start allows a gradual
full load, 7 days a week, yet require 800 %
Direct start
increase in drive motor current
Star-delta start

Energy consumption no additional maintenance. 700 %

Soft start from zero to full load, enabling
600 % SFC packages
Triple savings with 1:1 drive – almost unlimited motor switching

% full load current

500 %

Significantly increasing reliability and 400 %

frequency i.e. the number of times
Maintenance costs
service life, 1:1 drive reduces the 300 % the motor can be switched on
number of components needed in 200 %
within a defined time period
100 %
comparison with gear drive and eliminates the without overheating. Current
0%
associated transmission losses. Sound levels are Time peaks that can potentially cause
BSD SFC, CSD SFC and CSDX SFC compressor packages are highly also considerably lower. The benefits speak for damage to power systems and
No interference
The electro-magnetic compatibility
efficient direct drive units featuring variable speed control. With high- themselves: efficient power transmission, equipment are reliably eliminated without the need for
(EMC) of the components and of efficiency performance throughout the entire control range, large, low optimal power consumption and reduced
the complete machine has been
expensive electronics. In addition, the continuously
tested and certified in accordance speed airends featuring the energy saving SIGMA Profile have significant servicing / downtime costs. variable acceleration and deceleration of moving parts
with all applicable regulations.
advantages over smaller, high speed airends. reduces dynamic loading.
BSD/CSD/CSDX T SFC – Eight Decisive Advantages
1 SIGMA PROFILE airend 5 Efficient stainless steel condensate separator
A specific drive power can be used to turn a smaller airend at high speed or a The separator tank in the refrigeration dryer is made of stainless steel and is
larger airend at slow speed. Larger, low speed airends are more efficient, delivering therefore completely corrosion resistant. A deflector plate forces the compressed air
more compressed air for the same drive power. That is why KAESER developed streaming into the separator into rotary motion. The air then flows through a
airends especially for the BSD, CSD and CSDX series that precisely match the indivi- stainless steel wire mesh in which 99.9 percent of the water in the air is separated.
dual drive power and motor speed of each machine in the range. The slightly higher This figure remains almost constant, despite fluctuating airflow, reliably maintaining
cost of the larger airend is quickly recovered by the energy saved during operation. the required pressure dew point. Solid particles are also washed out and eliminated
together with the condensate.

2 Energy-saving one-to-one drive 6 SFC module

Motor speed = Airend speed
The advantage of this drive is not just the elimination of transmission losses. Siemens frequency inverters are used exclusively in KAESER’s speed
The motor and airend are joined by the coupling and its housing to form a compact controlled compressors for several reasons: Siemens manufacture the industrial
and durable unit that, apart from greasing of the motor bearings, requires no regular PC-based SIGMA CONTROL compressor controller, which enables seamless
maintenance. Should the coupling ever need to be replaced it takes just a few communication with the SFC control cabinet. Furthermore, the worldwide presence
minutes without any disassembly of the unit; the opening in the coupling housing is of Siemens ensures dependable service. The SFC control cabinet and SIGMA
more than large enough to replace the two coupling sections. CONTROL are tested and certified in accordance with all applicable electromagnetic
Drive motor compatibility regulations, both as individual components and as an integrated
Coupling
system.
Airend

3 Large, low speed airends 7 Flexible pressure adjustment

Each BSD SFC, CSD SFC und CSDX SFC compressor has exactly the same The wide range of 1:1 drive airends makes it possible to select the one that

Pressure in bar
13 bar
mechanical components as those used in KAESER’s fixed speed compressors. works most efficiently within the pressure and performance range required. This 0.1 bar steps
Others up This not only ensures unrivalled reliability and compressed air availability, but also ensures that every BSD/CSD/CSDX SFC compressor operates with the most efficient
to 7
0 00
r pm guarantees optimum energy efficiency. The most efficient method of producing com- pressure-frequency profile. In addition, the SIGMA CONTROL compressor
10 bar
pressed air is by using large, low speed airends – airends in BSD/CSD/CSDX SFC controller is equipped with a pressure-to-frequency profile that guarantees maximum 0.1 bar steps
to appr ox. 3600 rpm
T up compressors have a typical maximum rotation speed of approximately 3600 rpm. flexibility for air delivery and pressure whilst providing best possible efficiency.
SFC
DX Further advantages include long service life and reduced maintenance requirement.
CS 7.5 bar
D/

The use of standardised drive motors also contributes to long-lasting compressed air
/CS

0.1 bar steps

BS D

availability.
15 50 100 Hz

4 SIGMA CONTROL 8 Specific energy requirement is the key

Based on robust PC architecture, the SIGMA Control offers the possibility of
Dual, Quadro, Vario and Continuous control. Clearly marked navigation and input
keys on the user interface are used to move around within the menu options of the
Large, low speed airends are more efficient than small high speed airends
because they supply more air for the same drive power. This is not just the case at
full load, but also applies throughout the entire control range, which is particularly
6.4
kW/m3/min
four line alpha-numeric display. This powerful compressor controller can also display important for variable speed machines. The specific energy requirement of 6.4 kW at 7.5 bar
information in any 1 of 30 selectable languages at just the press of a button. The per m³/min for a KAESER SFC compressor operating at 7.5 bar can be considered
SIGMA CONTROL automatically controls and monitors the compressor package. The as an excellent indication of the machine’s efficiency. Variable frequency controlled
Profibus interface enables exchange of data and operational parameters allowing compressors are only truly efficient if they have low energy consumption throughout
the SIGMA Control to communicate with other air management systems such as their entire control range.
www.kaeser.com
the SIGMA Air Manager. Connection of a modem even allows maintenance and
alarm messages to be sent via SMS to relevant service locations.
Equipment
Complete unit Electric motor Cooling
Ergonomic control panel
Red, yellow and green
Dimensions:
Ready for operation, fully automatic, Premium efficiency electric motor The standard version
super silenced, vibration damped, all LEDs show the opera-
of quality German make to IP 55 is air cooled,
panels powder coated tional state of the
and Insulation Class F for additional separate aluminium
machine at a glance.
reserve coolers for com-
Sound insulation Also features a four-line
pressed air and fluid, radial fan driven by
Panels lined with laminated plain text display, 30

2025 CSDX
Connection from motor to airend

1700 BSD
1865 CSD
its own motor www.kaeser.com
mineral wool Airend with integral coupling flange selectable languages,
Refrigeration dryer touch keys with icons and a duty cycle
Vibration damping Electrical components
CFC-free, R 134a refrigerant, indicator.
Dual antivibration mountings using Control cabinet to IP
fully insulated, hermetically sealed
rubber bonded metal elements 54, control trans- Prime functions
refrigerant circuit, hot-gas bypass control,
former, Siemens Fully automatic monitoring and regulation
Airend electronic condensate drain and cen- 2080 BSD
Masterdrive with con- of airend discharge temperature; 2200 CSD
Genuine KAESER rotary screw, single trifugal separator upstream 2600 CSDX
trol unit, volt-free monitoring of motor current, direction of
stage airend with
contacts for SIGMA CONTROL airend rotation, air filter, fluid filter and

Compressor
SIGMA PROFILE and

cooling air
cooling air
ventilation control Interfaces for data communication com- fluid separator cartridge, display of per-
cooling fluid

outlet
outlet

Dryer
prising RS 232 for a modem or printer, formance data, service intervals of
injection Fluid and air flow
RS 485 for a slave compressor in base primary components, operating hours,
Dry air intake filter with pre-filtration, status data and event memory data. Dryer SFC
load sequencing mode and a Profibus DP
pneumatic inlet and venting valves, fluid cooling air cooling air
Drive interface for data networks. Prepared for Selection of Dual, Quadro, Vario and outlet Cooler
inlet
Direct, torsional-elastic coupling, without reservoir with three-stage separator Continuous control modes as required. cooling air
Teleservice
system, pressure relief valve, minimum inlet
gearing (For further information refer to SIGMA
pressure / check valve, thermostatic CONTROL/SIGMA CONTROL BASIC brochure P-780)
valve and fluid microfilter, all fully piped Motor
SFC
cooling air
using flexible couplings cooling air
inlet
inlet
1005 BSD
1041 CSD
BSD/CSD/CSDX T SFC Technical Specifications 1285 CSDX Compressed Air Connection
T - version with integrated refrigeration dryer (refrigerant R134a) SFC module with variable speed drive T SFC - Version with variable speed drive and integrated refrigeration dryer
Rated Working FAD* Max. Dryer power Sound Weight Working FAD* Max. Sound Weight Working FAD* Pressure- Dryer power Sound Weight Dimensions
motor power pressure at pres- consumption level** Model pressure at pressure level** Model pressure at range consumption level**
Model working pressure sure working pressure working pressure
kW bar m3/min bar kW dB(A) kg bar m3/min bar dB(A) kg bar m3/min bar kW dB(A) kg LxWxH
7.5 5.65 8
30 BSD 62 T 10 4.45 11 0.8 68 1200 2080 x 1005 x 1700
13 3.60 15
7.5 7.00 8 7.5 1.57 - 6.25 6- 8.5 7.5 1.57 - 6.25 6 -8.5
37 BSD 72 T 10 6.50 11 0.8 68 1245 BSD 72 SFC 10 1.16 - 5.34 9-11 70 1220 BSD 72 T SFC 10 1.16 - 5.34 9 - 11 0.8 70 1340 2080 x 1005 x 1700
13 4.40 15 13 0.87 - 4.45 12-15 13 0.87 - 4.45 12-15
7.5 8.15 8
45 BSD 81 T 10 6.8 11 1.1 70 1350 2080 x 1005 x 1700
13 5.43 15
7.5 8.25 8 7.5 1.92 - 8.20 6- 8.5 7.5 1.92 - 8.20 6 -8.5
45 CSD 82 T 10 6.90 11 1.1 69 1460 CSD 82 SFC 10 1.49 - 6.90 9-11 71 1350 CSD 82 T SFC 10 1.49 - 6.90 9 -11 1.1 71 1580 2200 x 1041 x 1865
13 5.50 15 13 1.10 - 5.80 12-15 13 1.10 - 5.80 12-15
7.5 10.15 8 7.5 2.33 - 9.90 6- 8.5 7.5 2.33 - 9.90 6 -8.5
55 CSD 102 T 10 8.20 11 1.1 69 1510 CSD 102 SFC 10 1.87 - 8.95 9-11 71 1560 CSD 102 T SFC 10 1.87 - 8.95 9 -11 1.1 71 1700 2200 x 1041 x 1865
13 6.75 15 13 1.40 - 7.30 12-15 13 1.40 - 7.30 12-15
7.5 12.00 8 7.5 2.89-12.28 6- 8.5 7.5 2.89-12.28 6 -8.5
75 CSD 122 T 10 10.05 11 1.4 71 1540 CSD 122 SFC 10 2.18-10.50 9-11 73 1610 CSD 122 T SFC 10 2.18-10.50 9 -11 1.4 73 1770 2200 x 1041 x 1865
13 8.07 15 13 1.86 - 8.90 12-15 13 1.86 - 8.90 12-15
7.5 13.70 8 7.5 3.39 -13.25 6- 8.5 7.5 3.39-13.25 6 -8.5
75 CSDX 137 T 10 11.86 11 2.2 72 2250 CSDX 137 SFC 10 2.82 -11.84 9-11 74 2200 CSDX 137 T SFC 10 2.82-11.84 9 -11 2.2 74 2400 2600 x 1285 x 2025
13 9.88 15 13 2.12 - 9.60 12-15 13 2.12 - 9.60 12-15
7.5 16.10 8 7.5 3.93-15.85 6- 8.5 7.5 3.93-15.85 6 -8.5
90 CSDX 162 T 10 13.50 11 2.2 73 2350 CSDX 162 SFC 10 3.36-14.03 9-11 75 2400 CSDX 162 T SFC 10 3.36-14.03 9 -11 2.2 75 2600 2600 x 1285 x 2025
13 11.70 15 13 2.60-12.00 12-15 13 2.60-12.00 12-15
* FAD to ISO 1217: 1996, Annex C; **) Sound level to PN8NTC 2.3 at 1m distance, free-field measurement
Different fields of application require different grades of air treatment
Explanation:
Choose the required grade of treatment according to your field of application: THNF = bag filter
cleans dusty and highly contaminated intake air
Air treatment using a refrigeration dryer (+3 °C pressure dew point) ZK = centrifugal separator
separates accumulating condensate
ED = ECO Drain
Examples: selection of treatment classes to ISO 8573-1 electronic level-controlled condensate drain

KAESER
Solids Water Oil Bacteria FD = particulate filter 1 µm
FST separates dust particles (attrition) 1 µm
Dairies, breweries A 1 4
<
1 FE = microfilter 0.01 ppm
separates aerosol oils and solid particles

KAESER
>0.01 µm, oil content ≤0.01 mg/m3
Food and semi-luxury food
B < <

KAESER
KAESER

KAESER
production 1 4 1 FD FF = microfilter 0.001 ppm
AMCS ACT FF
separates aerosol oils and solid particles >0.01 µm,
oil content ≤0.001 mg/m3
Very clean conveying air, che-
C 2 4
<
1
FE Air receiver FG = activated carbon filter
mical plant AMCS

KAESER
for adsorption of oil vapours, oil vapour content

KAESER
≤0.003 mg/m3

KAESER
A < <

KAESER
Pharmaceuticals 1 4 1 SFC CSD 102T FFG = combination filter
FFG
comprising FF and FG
FST rotary screw compressor SFC T
Weaving machines, B <
1 4
<
1 ED Compressor THNF rotary screw compressor with attached refrigeration
photo labs, Pharmaceuticals AMCS dryer; pressure dew point down to +3 °C;
compressor available with variable frequency drive

KAESER
FF
Paint spraying, powder coating D <
1 4
<
1 FST = sterile filter for bacteria-free air
AMCS Aquamat = condensate treatment system
FE

KAESER
Packaging, control and < AMCS = air-main charging system
Instrument air
E 1 4 2
AMCS
Degree of filtration:
General works air, G 2 4 3 Solid particles
Overall
quality sandblasting Humidity

ISO 8573-1
AMCS Aquamat oil content
Max. no. of particles per m3 with size d (µm)
Pressure dew

0.1<d<0.5

1.0<d<5.0
0.5<d<1.0
point

mg/m3
(x=liquid water mg/m3

<0.1
Class

µm
in mg/m3 )
A Oil vapour content ≤ 0.003 mg/m3, particle retention > 0.01 µm,
sterile, odourless and tasteless 0 as specified by user

B 1 – 100 1 0 – – <- 70 °C <0.01

Oil vapour content ≤ 0.003 mg/m3, particle retention > 0.01 µm
2 – 100000 1000 10 – – <- 40 °C <0.1
C Oil vapour content ≤ 0.003 mg/m3, particle retention > 1 µm 3 – – 10000 500 – – <- 20 °C <1.0
D Aerosol oil≤ 0.001 mg/m3 particle retention > 0.01 µm Contaminants: 4 – – – 1000 – – < + 3 °C <5.0

E Aerosol oil ≤ 0.01 mg/m3, particle retention > 0.01 µm + solids - 5 – – – 20000 – – < + 7 °C –
6 – < 5 < 5 < + 10 °C –
G Aerosol oil ≤ 1 mg/m particle retention > 1 µm
3 + water -
7 – < 40 < 10 x <0.5 –
+ oil - 8 – – – 0.5<x < 5.0 –
+ bacteria - 9 – – – 5.0<x <10.0 –

P-651/20ED.3/05 Specifications are subject to change without notice

KAESER KOMPRESSOREN GmbH
P. O. Box 2143 – 96410 Coburg – GERMANY – Tel: +49 9561 640-0 – Fax: +49 9561 640130
www.kaeser.com – e-mail: productinfo@kaeser.com