Levitronix BFS-i06 User manual

User Manual for BFS-i06
www.levitronix.com
PL-3502-00, Rev00, DCO# 21-249
First Release: 26-Jan-2018
Last Update: 03-Nov-2021
Bearingless Fan BFS-i06
915 Pa
8.4 m3/min
(3.68 inH2O)
(297 cfm)
Max. Speed: 13000 rpm
USER MANUAL
This manual contains information necessary for the safe and proper use of the BFS-i06 bearingless fan.
Included are specifications for the standard configurations and instructions regarding its use, installation,
operation, adjustment, inspection and maintenance. For special configurations refer to accompanying
information. Please familiarize yourself with the contents of this manual to ensure the safe and effective
use of this product. After reading this manual, please store it where the personnel responsible for operating
the bearingless fan can readily refer to it at any time.
The Levitronix®Service Software (with according manual Levitronix

Doc.# PL-4048-00) is available for
operation, troubleshooting, parameter logging or user specific configurations. For the bearingless fan the
Levitronix®Service Software version V2.0.5.0 or higher is needed.

User Manual for BFS-i06
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PL-3502-00, Rev00, DCO# 21-249
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Table of Contents
1SAFETY PRECAUTIONS........................................................................................................3
2SPECIFICATIONS...................................................................................................................4
2.1 Specification of Components............................................................................................................. 4
2.2 General Environmental Conditions.................................................................................................... 5
2.3 System Configuration ........................................................................................................................ 6
2.3.1 Standard System Configuration.....................................................................................................................6
2.3.2 System Configuration ATEX / IECEx.............................................................................................................6
2.4 Basic Dimensions of Main Components............................................................................................ 7
2.5 Pressure-Flow Curves ....................................................................................................................... 8
3ENGINEERING INFORMATION..............................................................................................9
3.1 Power Supply and Consumption ....................................................................................................... 9
3.1.1 Power Consumption......................................................................................................................................9
3.1.2 Power Supply..............................................................................................................................................10
3.1.3 Inrush Current .............................................................................................................................................10
3.2 Fan Mounting................................................................................................................................... 11
3.2.1 Flange Sealing Recommendation ...............................................................................................................11
3.2.2 Mounting Proposals.....................................................................................................................................11
3.3 Sound Pressure Level ..................................................................................................................... 12
4INSTALLATION ....................................................................................................................13
4.1 Electrical Installation........................................................................................................................ 13
4.1.1 Installation Instructions for Power Supply....................................................................................................13
4.1.2 Installation of PLC Interface Signals............................................................................................................13
4.1.3 Electrical Schematics Overview of Motor Interface .....................................................................................15
4.2 Mechanical Installation .................................................................................................................... 16
5OPERATION .........................................................................................................................17
5.1 Operation of Bearingless Fan.......................................................................................................... 17
5.2 Operation for ATEX / IECEx Application ......................................................................................... 17
6TROUBLESHOOTING AND SUPPORT................................................................................18
6.1 Troubleshooting for Operation with PLC ......................................................................................... 18
6.2 Troubleshooting with Service Software ........................................................................................... 18
6.3 Technical Support............................................................................................................................ 18
7APPENDIX ............................................................................................................................19
7.1 Regulatory Status ............................................................................................................................ 19
7.1.1 CE Marking..................................................................................................................................................19
7.1.2 ATEX / IECEx Certification and Marking .....................................................................................................19
7.1.3 Disposal of Equipment –WEEE Directive 2012/19/EU ...............................................................................19
7.2 Symbols and Signal Words.............................................................................................................. 20

User Manual for BFS-i06
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PL-3502-00, Rev00, DCO# 21-249
3
1 Safety Precautions
The BFS-i06 bearingless fan is designed to be used in industrial production machines and equipment
containing ventilation circuits. Typical applications are semiconductor and chemical manufacturing equipment.
Installation shall be done by qualified personnel only. Following safety precautions and all “CAUTION”,
“WARNING” and “DANGER” indications in the relevant sections shall be followed.
CAUTION
Do not under any circumstances open the fan. Levitronix®does not assume
responsibility for any damage occurring under such circumstances.
CAUTION
High magnetic field strength of fan rotor.
The fan rotor contains magnets with high field strength. This may alter or
damage the calibration of sensitive electronic devices and measuring
instruments in the immediate surroundings. Keep at a safe distance from
computers, monitors and all magnetic data storage media (e.g. disks, credit
cards, audio and video tapes etc.)
CAUTION
Revolving fan rotor.
The fan rotor operates at high rotational speeds. It may cause injury if fingers,
hands, hair, clothes, etc. are getting in touch with the revolving fan rotor. Do not
touch the fan rotor while it is moving.
!
WARNING
Hazardous voltage may be present.
In case of usage of an inadequate AC/DC power supply, mains voltages may be
present (even if the system is designed for 48 VDC). The usage of a galvanically
separated power supply, which is certified by a 3rd party (UL or CE), is required.
Do not under any circumstances open the powered fan.
!
WARNING
High magnetic field strength of fan rotor if removed from motor.
The fan rotor contains magnets with high field strength. If removed from motor,
pacemakers may be influenced, and magnetic forces may lead to contusions.
Only remove rotor if necessary. Keep distance to pacemakers and handle fan
rotor with care.
!
WARNING
TOXIC CHEMICALS may be present.
When using the system to ventilate chemicals, skin contact and toxic gases may
be hazardous to your health. Wear safety gloves and other appropriate safety
equipment.
!
WARNING
Bearingless fan for ATEX / IECEX applications.
Only specific types of the bearingless fan are classified for the use in Ex
classified locations. Refer to the corresponding section in the manual.

User Manual for BFS-i06
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2 Specifications
2.1 Specification of Components
Figure 1: Standard fan
Figure 2: Standard accessories
3
1
4
E
F
D
C
B
A
5
A
B
C
D
2a
2b

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Pos.
Component
Article Name
Article #
Characteristics
Value / Feature
1
Bearingless Fan
(ATEX / IECEx)
BFS-i06.1
100-10184
Voltage, Power Input
48 V DC ±10%, 240 W
(Option: 24 V DC ±5%, 65 W, with reduced max. speed of 8000 rpm.)
Max. Pressure, Max. Flow
915 Pa (3.68 inH2O), 8.4 m3/min (297 cfm)
Point of Max. Power
850 Pa, 7.3 m3/min, 13000 rpm
(optional 24 V supply voltage: 320 Pa, 4.4 m3/min, 8000 rpm)
ATEX / IECEx Marking
1258
II 2G Ex h mb IIC T6 Gd
II 2D Ex h mb IIIC T85 °C Db
Ambient and gas temperature range 0 to 40°C
IP Rating
IP67
Electrical Interfaces
PLC 2 analog inputs 4-20 mA
with 1 analog output 4-20 mA
2 digital inputs 0-24 V (optocoupler)
2 digital outputs 0-24 V / 100 mA (open drain)
RS485 interface, Modbus protocol (extended control or service through
fieldbus or Levitronix®Service Software).
Standard Firmware
V3.48 (with maximum rotational speed 13000 rpm).
Mechanical Interface
Flange on both motor sides with mounting holes 4 x Ø 12 mm on
diameter 138 mm. Flange inside Ø 100 mm, outside 120 mm x 120 mm.
Cable Length
5 m + 0.2 m wires with TE connectors for power and PLC signals.
Materials
Polypropylene, electrically conductive, flame retardant.
Cable: PVC jacket, PVDF bushing.
Weight
1.4 kg, 3.1 lb
Table 1: Specification of standard configuration
Pos.
Component
Article Name
Article #
Characteristics
Value / Feature
2
Cable Adapter Set
Set of ICP-5.1-03
and ICS-5.1-03
100-91510
See 2a and 2b
2a
Cable Adapter Power,
Open Wires with
TE Connector
ICP-5.1-03
190-10463
Connector
TE Connectivity D 3200 1-179553-3
Wires
0.3 m, 3 x 1.5 mm2, with wire end sleeves, PVC insulated
2b
Cable Adapter Signals,
Open Wires with
TE Connector
ICS-5.1-03
190-10464
Connector
TE Connectivity D 1200 1-1903131-6
Wires
0.3 m, 12 x 0.14 mm2, wire end sleeves on 3 RS485 bus relevant wires,
PVC insulated
3
AC/DC Power Supply
See section 3.1.2 for a list of compatible and tested power supplies.
4
RS485 to USB
Adaptor-TR Isolated
YN-485I-TR
100-30392
Structure/Design
USB connector (A) with termination resistor and cable (2m) with
connector pair (B and C) for external RS485 wire connection.
Magnetically isolated. Included is a USB space saver cable (D).
Purpose
Control or service of the fan via USB port of a PC.
5
ATEX Cable
Sealing System
ACS-A.1
(Roxtec)
100-90292
Materials
Sleeve (A) and Gasket (B): Stainless Steel, EPDM
Frame(C) and 2x Cable Module (D): Roxylon (EPDM Rubber)
Note
Lubricant (E) and measurement plates (F) are included.
Table 2: Specification of standard accessories
2.2 General Environmental Conditions
Condition
Limits
Usage
Indoor
Altitude
Up to 2000 m
Operating ambient temperature
0 to 40°C
Storage ambient temperature
(Extremes for Transportation)
-20 to 80°C
Operating humidity range (relative humidity)
15 –95% (non-condensing)
Storage humidity range (relative humidity)
(Extremes for Transportation)
15 –95% (non-condensing)
Normal storage conditions
Ambient temp.: 20 to 30°C
Relative humidity: 50% (non-condensing)
DC supply fluctuations
 10% of nominal voltage
Transient over-voltages typically present on
the mains supply
Surge immunity according to EN 61000-4-5
(tested together with certified AC/DC power supply)
Pollution degree
2
Table 3: Environmental conditions for bearingless fan

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2.3 System Configuration
•Operation and Interfaces: System control is possible through analog and digital inputs or via the
RS485 interface. The latter can be used as a fieldbus or with an RS485 to USB converter from a PC
via the Levitronix®Service Software (parameterization, firmware updates and failure analysis).
•Fan control modes:
a. Speed control: Control of rotational speed in increments of 1 rpm up to 13000 rpm.
b. Pressure or flow control: Closed-loop control of pressure or flow if an according external
sensor is connected to the analog input. Sensor placement depending on control target.
2.3.1 Standard System Configuration
Figure 3: Standard system configuration.
2.3.2 System Configuration ATEX / IECEx
Figure 4: ATEX / IECEx system configuration
Integrated
Motor and
Electronics
Gas
In
Signal Interface
- 2 Digital Inputs
- 2 Digital Outputs
- 2 Analog Inputs
- 1 Analog Output
- RS485 Interface
Gas
Out
Mounting
Flange
Tubing Flow or Pressure Sensor
(optional, not included)
Cable
Bushing
DC Supply
(+VDC, GND, Shielding)
Gasket
(not included)
AC/DC
Power Supply
DC
Out AC
In
Cable Adapter Power
RS485/USB
Converter Cable
Screw type connector for
open-wires connection included in
converter cable package.
Cable Adapter Signal
Impeller
PC Connection:
- System configuration
- Firmware update
- Monitoring
Motor Cable
Chemical Resistance
and IP-67 Space
MagLev Fan
1
3
4
2a
2b
Integrated
Motor and
Electronics
Gas
In
Signal Interface
- 2 Digital Inputs
- 2 Digital Outputs
- 2 Analog Inputs
- 1 Analog Output
- RS485 Interface
Gas
Out
Mounting
Flange
Tubing Flow or Pressure Sensor
(optional, not included)
Cable
Bushing
DC Supply
(+VDC, GND, Shielding)
Gasket
(not included)
AC/DC
Power Supply
DC
Out AC
In
Cable Adapter Power
RS485/USB
Converter Cable
Screw type connector for
open-wires connection included in
converter cable package.
Cable Adapter Signal
Impeller
MagLev Fan
PC Connection:
- System configuration
- Firmware update
- Monitoring
Motor Cable
Ex conform cable
sealing system
Ex Location
Outside of Fan:
Zone 1/21 or
Zone 2/22 or
Non-Classified
Chemical Resistance
and IP-67 Space
Ex Location
Inside of Fan:
Zone 1/21 or
Zone 2/22 1
3
4
2a
2b
5

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2.4 Basic Dimensions of Main Components
Note 1: For other configurations, components or more details refer to the according drawings.
Note 2: Dimensions in millimeters [inch]. Non-tolerated dimensions are for reference only.
Figure 5: Basic dimensions in mm of bearingless fan BFS-i06.1
Figure 6: Basic dimensions of cable adapters ICP-5.1-03 and ICS-5.1-03
Standard Configuration:
A = 5.00 m = 197”
B = 0.20 m = 7.87”
Signal Wires
(PLC, RS485):
0.14 mm2, PVC
Connector Power:
TE D3200 1-178128-3
DC Supply
Power Wires:
1.5 mm2, PVC
Connector Signal:
TE D1200 1-1827864-6
Motor Cable:
PVC, gray
Cable Bushing:
PVDF with TPE-sealing
and FKM flat sealing ring
Housing and Rotor:
PP, electrically conductive,
flame retardant
Mounting Flange
Sealing Surface

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2.5 Pressure-Flow Curves
Figure 7: Pressure-flow curves of bearingless fan BFS-i06.1
Typical values measured for BFS-i06.1
•Pressure Drop Coefficient at 0 rpm: C = 0.097 (  P = C x Q2, Q = Flow [l/s],  P = Pressure Drop [Pa]).
•48 V / 24 V Supply Voltage: The maximum rotational speed is limited to 13000 rpm for 48 V supply
voltage and 8000 rpm for 24 V supply voltage.
•Negative Rotation Direction: Negative rotational speeds can be enabled in the EEPROM editor of
the Levitronix®Service Software. This feature can be used to block an existing flow, as replacement
for actively controlled valves. If negative flow needs to be avoided for safety reasons, it is
recommended to install passive check valves or a safety shutdown mechanism to deactivate the
bearingless fan in case of negative flow.
•Serial or Parallel Operation of Multiple Fans: Multiple fans can be used to achieve higher pressure
or flow levels.
a. Serial: Pressure is multiplied by up to the number of fans, while flow remains unchanged.
b. Parallel: Flow is multiplied by up to the number of fans, while pressure remains unchanged.
050 100 150 200 250 300
0
0.5
1
1.5
2
2.5
3
3.5
4
0
100
200
300
400
500
600
700
800
900
1000
0 1 2 3 4 5 6 7 8 9
Flow / cfm
Pressure / inH2O
Pressure / Pa
Flow / m3/min
Atmospheric Pressure: 950 hPa, Air Temperature: 24 C
8000 rpm
6000 rpm
12000 rpm
4000 rpm
10000 rpm
13000 rpm
Stability Limit
(Tilting)
48 V Supply Voltage,
ReleasedPerformance
24 V Supply Voltage,
ReleasedPerformance
2000 rpm
050 100 150 200 250 300
-4
-3.5
-3
-2.5
-2
-1.5
-1
-0.5
0
-1000
-900
-800
-700
-600
-500
-400
-300
-200
-100
0
0123456789
Flow / cfm
Pressure / inH2O
Pressure / Pa
Flow / m3/min
6000 rpm
-6000 rpm
4000 rpm
-10000 rpm
-13000 rpm Stability Limit
(Tilting)
0 rpm

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3 Engineering Information
3.1 Power Supply and Consumption
3.1.1 Power Consumption
Figure 8: Steady state power consumption vs flow and speed (DC input)
Typical values measured for BFS-i06.1
Figure 9: Peak power consumption during acceleration (DC input)
Typical values measured for BFS-i06.1 at operating point with maximum power consumption
Dashed line: example of optional input power limitation
•Steady State Power Consumption: Depends on the actual speed, pressure, and flow. Figure 8
visualizes the steady state power consumption for different operating points.
•Peak Power Consumption (short time): Occurs during acceleration and depends on the rotational
speed and the acceleration rate. Figure 9 visualizes the peak power consumption.
•Power Supply Rating: Depending on the operating point, one power supply may be used to power
several bearingless fans simultaneously, or a supply with lower power rating may be used (see also
section 3.1.2).
050 100 150 200 250 300
0
20
40
60
80
100
120
140
160
180
200
220
240
0 1 2 3 4 5 6 7 8 9
Flow / cfm
Power Consumption / W
Flow / m3/min
Atmospheric Pressure: 950hPa, Air Temperature: 24
8000 rpm
6000 rpm
12000 rpm
10000 rpm
13000 rpm
Stability Limit
(Tilting)
48 V Supply Voltage,
ReleasedPerformance
24 V Supply Voltage,
ReleasedPerformance
Atmospheric Pressure: 950hPa, Air Temperature: 24
8000 rpm
6000 rpm
12000 rpm
10000 rpm
13000 rpm
Stability Limit
(Tilting)
48 V Supply Voltage,
ReleasedPerformance
24 V Supply Voltage,
ReleasedPerformance
Atmospheric Pressure: 950hPa, Air Temperature: 24
8000 rpm
6000 rpm
12000 rpm
10000 rpm
13000 rpm
Stability Limit
(Tilting)
48 V Supply Voltage,
ReleasedPerformance
24 V Supply Voltage,
ReleasedPerformance
Atmospheric Pressure: 950hPa, Air Temperature: 24
8000 rpm
6000 rpm
12000 rpm
10000 rpm
13000 rpm
Stability Limit
(Tilting)
48 V Supply Voltage,
ReleasedPerformance
24 V Supply Voltage,
ReleasedPerformance
0
25
50
75
100
125
150
175
200
225
250
275
300
325
0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000
Power Consumption / W
Rotational Speed / rpm
48 V Supply Voltage,
Released Performance
24 V Supply Voltage,
Released Performance
8000 rpm/s
3000 rpm/s

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•Input Power Limitation: An optional input power limit may be set via Levitronix®Service Software or
Modbus protocol. If set, actual acceleration rate and/or maximum speed are reduced dynamically such
that the specified limit is not exceeded (±10 W tolerance). The extent to which they are reduced
depends on the power limit as well as the operating point. The dashed line in Figure 9 shows an
example for 120 W at operating point with maximum power consumption. The fan accelerates with
8000 rpm / s up to 5000 rpm, then gradually reduces the acceleration rate to prevent further increase
in input power. The maximum reachable speed in this operating point at 120 W input power is around
10500 rpm (see also steady state consumption, Figure 8).
3.1.2 Power Supply
It is highly recommended to evaluate used power supplies under demanding operating situations like fast
braking from maximum speed and during power on and take-off of the fan rotor.
The power rating of the supply may be chosen according to the desired operating point / maximum speed /
number of fans per supply –see Figure 8, Figure 9.
Table 4 shows a selection of power supplies tested at Levitronix®with according speed and/or input power
limitations. Please note that only the general functionality of the BFS-i06in combination with the given supplies
was tested, and no recommendations in terms of reliability, efficiency, certifications, cost effectiveness or
similar are given.
Manufacturer
Article Name
Characteristics
Value / Feature
Recommended Limits
Traco Power
TIB 480-148
Voltage Input / Output
85 –264 V AC (auto. detection) / 48 V DC
- No limit required (up to 2 fans per power supply)
- Example limits for 3 fans per power supply:
Input power limit 230 W (peak)
Speed limit 11000 rpm (continuous)
Power Output continuous / peak
480 W / 720 W for 4 s
Certification / Standards
CB, UL, CSA, Semi F47
TDK Lambda
HWS300-48
Voltage Input / Output
85 –265 V AC (auto. detection) / 48 V DC
- No limit required (1 fan per power supply)
- Example limits for 2 fans per power supply:
Input power limit 150 W (peak & continuous)
Speed limit 11000 rpm (continuous)
Power Output
336 W
Certification / Standards
CB, UL, CSA, Semi F47
Traco Power
TIB 240-148
Voltage Input / Output
85 –264 V AC (auto. detection) / 48 V DC
- No limit required (1 fan per power supply)
- Example limits for 2 fans per power supply:
Input power limit 170 W (peak)
Speed limit 10000 rpm (continuous)
Power Output continuous / peak
240 W / 360 W for 4 s
Certification / Standards
CB, UL, CSA, Semi F47
Traco Power
TSP-600-148-M
Voltage Input / Output
85 –264 V AC (auto. detection) / 48 V DC
- No limit required (1 fan per power supply)
- Example limits for 2 fans per power supply:
Input power limit 290 W (peak & continuous)
No Speed limit
Power Output
600 W
Certification / Standards
CB, UL, CSA, Semi F47
TDK Lambda
RWS600B-48
Voltage Input / Output
85 –265 V AC (auto. detection) / 48 V DC
- No limit required (1 fan per power supply)
- Example limits for 2 fans per power supply:
Input power limit 290 W (peak & continuous)
No Speed limit
Power Output
600 W
Certification / Standards
CB, UL, CSA, Semi F47
Cosel
PJA1000F-48
Voltage Input / Output
85 –264 V AC (auto. detection) / 48 V DC
- No limit required (up to 3 fans per power supply)
- Example limits for 4 fans per power supply:
Input power limit 250 W (peak & continuous)
No Speed limit
Power Output
1008 W
Certification / Standards
CB, UL, CSA
Traco Power
TIB 240-124
Voltage Input / Output
85 –264 V AC (auto. detection) / 24 V DC
- No limit required (1 fan per power supply)
(Auto. limit 8000 rpm, if 24 V DC is detected)
- Example limits for 2 fans per power supply:
Input power limit 170 W (peak)
No Speed limit (auto. limit 8000 rpm)
Power Output continuous / peak
240 W / 360 W for 4 s
Certification / Standards
CB, UL, CSA, Semi F47
Table 4: Specification of tested power supplies
Additionally tested and passed, but discontinued by manufacturer: Cosel PLA600F-48 (600 W)
The following power supplies were tested but failed to recover the DC voltage quick enough during fast braking
and accelerating tests, triggering a shutdown to error state on the fan:
TDK-Lambda RWS300B-48 / Cosel PJA300F-48
3.1.3 Inrush Current
The BFS-i06 bearingless fan relies on the inrush current limiter of the power supply and does not have a built-
in inrush current limiter. Therefore, high inrush currents may occur if the fan is directly connected to an already
powered DC socket. These high inrush currents might disturb certain power supplies.
A peak value of 150 A with an I2t value of 2.9 A2s was measured by hot-plugging the BFS-i06 with 5 m cable
length to a 480 W power supply. It is therefore recommended to connect the bearingless fan to the power
supply BEFORE powering up the supply.

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3.2 Fan Mounting
3.2.1 Flange Sealing Recommendation
The pressure tightness of the fan flange was successfully tested at Levitronix® with the following reference
setup:
•Flat Gasket: Material FKM, thickness 3 mm, dimensions see Figure 10.
•Flange Counter Part: Material PVC, thickness min. 10 mm, recommended 15 mm.
•Screws: M10 screws, tightening torque 1.5 –3.5 Nm.
Figure 10: Flat Gasket Dimensions, used by Levitronix®
Note: Dimensions in mm
3.2.2 Mounting Proposals
BFS-i06 fans can be adapted into many different duct systems and may be operated in parallel or series to
achieve higher flow or pressure. This section describes a few of many possible mounting scenarios. For more
in-depth information contact Levitronix® technical support (chapter 6).
Figure 11: Possible mountings of BFS-i06 in different duct systems
(Stated dimensions are outer duct dimension)
110 mm x 110 mm 110 mm 150 mm
110 mm x 110 mm
Series operation
Up to 2x pressure
230 mm x 110 mm
Parallel operation
Up to 2x flow rate
350 mm x 110 mm
Parallel operation
Up to 3x flow rate

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Figure 12: Examples of mounting with self-cutting thread inserts (left) and through holes (right)
3.3 Sound Pressure Level
The sound pressure level emitted by the BFS-i06 depends strongly on the installation, operating point, and
rotational speed. It is recommended that customers measure the sound pressure level after installation of the
fan in their setup during typical operation.
Figure 13 shows the sound pressure levels measured at Levitronix®. The fan was installed at a height of about
2 m above ground into a closed duct system. Measurements were taken based on Semi S2 guidelines, i.e.
1 m traversed from the setup at a height of 1.2 m and 1.5 m above ground.
Figure 13: Sound pressure level vs rotational speed and measurement height
Typical measured values of BFS-i06.1 installed in a closed duct system
50
52
54
56
58
60
62
64
66
68
70
8000 8500 9000 9500 10000 10500 11000 11500 12000 12500 13000
Sound Pressure Level / dBA
Rotational Speed / rpm
48 V Supply Voltage,
Released Performance
24 V Supply Voltage,
Released Performance
1.5 m above
ground
1.2 m above
ground

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4 Installation
4.1 Electrical Installation
!
WARNING
Protective Earth on Ex-Model
Bearingless Fans placed in Ex classified locations must be connected to
protective earth, which must be done with the earth wire according to Table 5.
4.1.1 Installation Instructions for Power Supply
!
WARNING
Hazardous voltage may be present.
Always isolate the electrical power supply before making or changing
connections to the unit.
In case of usage of an inadequate AC/DC power supply, mains voltages
may be present (even if the system is designed for 48 VDC). The usage
of a galvanically separated power supply, which is certified by a 3rd party
(UL or CE), is required.
•Power requirement: See section 3.1 for the power consumption of the bearingless fan. Depending
on the operating point, one power supply may be used to power several bearingless fans
simultaneously, or a supply with a lower power rating may be used. If other power supplies are used
than the ones tested by Levitronix®, it is highly recommended to test these under dynamic conditions
(acceleration and deceleration of the fan up to maximum rotational speed).
•Connection: Make sure the AD/DC power supply is off before connecting the fan (see also
section 3.1.2). Connector type TE D3200 1-178128-3 is used as the power connector of the fan. Use
TE D3200 1-179553-3 to connect the power supply (cable adapter available as accessory). Make sure
pin allocation is according to Table 5 and connect the cable shield to earth.
Pin
Wire Color
Description
Levels
Notes
1
Red
Power +
+ 48 VDC ± 10 %
Option + 24 VDC ± 5 % (reduced performance)
2
Black
Power -
GND / earth
Internally connected to cable shield
3
Yellow-green
Cable shield
GND / earth
To be connected to earth
Table 5: Configuration of power connector
Connector type: TE D3200 1-178128-3
4.1.2 Installation of PLC Interface Signals
To operate the bearingless fan with a PLC, a minimum set of one digital input and one analog input is needed
for speed control, or a set of two digital inputs and two analog inputs for process (pressure or flow) control.
The digital and analog outputs can be used to monitor system status and operating parameters (see Table 6).
CAUTION
The analog inputs and analog and digital outputs are not
galvanically isolated from the motor electronics.
•Connection: Connector type TE D1200 1-1827864-6 is used as the PLC connector of the fan. Use
TE D1200 1-1903131-6 to connect the tool control (cable adapter available as accessory). Connect
the desired interfaces to the respective pins according to Table 6. Figure 14 provides a reference for
hardware configuration of the PLC inputs and outputs.

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•RS485 interface: To use RS485 as a control or service interface, an initialization resistor network
according to Figure 14 should be used to ensure stable communication and avoid disturbance effects.
For service and debugging purposes with the Levitronix®Service Software an RS485 to USB converter
cable (initialization network included) can be ordered according to Table 2. Do not use multiple master
devices at the same time.
•RS485 Fieldbus Multi-System Arrays: Several systems can be directly connected to the same
RS485 master. Following points and information shall be considered:
a. Address setting of the fan units can be done with the Levitronix®Service Software and a PC.
b. A termination resistor is recommended for long bus lengths. Do not use closed ring
arrangements. Contact Levitronix®Technical Service department (see Section 6.3) for further
details and support.
Pin
Wire Color
Description
Levels
Notes
B4
Pink
Digital input 1
Enable / reset
5…24 V (min. 30 ms, edge triggered)
SPEED or PROCESS
or RESET
0 V (min. 30 ms, edge triggered)
STANDBY
Positive edge:
- Turns the system ON from state STANDBY
(PROCESS if digital input 2 is on, else SPEED)
- Resets the system from state ERROR
Recommended delay between reset and enable-on
positive edges: 500 ms
Negative edge:
- Turns the system OFF, if it was started by digital in 1
- Else no effect
Input logic may be inverted via Service Software or
Modbus protocol.
B5
Gray
Digital input 2
Process mode
5…24 V (min. 30 ms, edge triggered)
PROCESS Control
0 V (min. 30 ms, edge triggered)
SPEED Control
Switch between process control (closed loop pressure
or flow control) and speed control if system was
started by digital in 1.
Input logic may be inverted via Service Software or
Modbus protocol.
B3
Yellow
Digital input ground
Reference for digital inputs
B6
Violet
Analog input 1
Setpoint speed or
setpoint process value
Speed mode:
4…20 mA * = 0…13000 rpm *
Process mode:
4…20 mA * = 0…100 % *
Analog input 1 is enabled if the system was started by
a positive edge on digital input 1 and disabled as soon
as the power output is deactivated. Message 80h “PLC
analog input active” indicates that the input is active.
Setpoint speed or process requests over Modbus or
Service Software will be overridden when analog input
1 is active.
B1
Gray-pink
Analog input 2
Actual process value
(pressure or flow sensor)
4...20 mA * = 0…100% *
Connect to an external pressure or flow sensor to use
process control mode.
B2
Blue
Analog input ground
Reference for analog inputs
A2
Brown
Digital output 1
System state signal
Circuit closed
Power output ACTIVE
Circuit open
Power output NOT active
Indicates if the system’s power output is ON or OFF.
Ground (A4) is reference.
A3
White
Digital output 2
Error signal
Circuit closed
NO error present
Circuit open
ERROR(s) present
Indicates if errors are present.
Ground (A4) is reference.
A1
Blue-red
Analog output
Actual speed or
actual process value
Speed:
4...20 mA * = 0…13000 rpm *
Process value:
4…20 mA * = 0…100 % *
Assignment (speed / process / mode dependent) can
be changed via Service Software or Modbus protocol.
Ground (A4) is reference.
A5
Brown-green
RS485 +
Modbus protocol
Termination resistors recommended
A6
White-yellow
RS485 -
A4
White-green
Ground
GND / earth
Internally connected to power - and cable shield
Table 6: Configuration of PLC connector for standard firmware
For other PLC configurations refer to alternate firmware documentation.
* Levels configurable in EEPROM editor of Levitronix®Service Software or through Modbus protocol.

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4.1.3 Electrical Schematics Overview of Motor Interface
Figure 14: Electrical schematics of motor interface
RS485 to USB converter cable with termination resistors to be ordered according to Table 2.
Do not use multiple master devices on the RS485 at the same time.
Bearingless fan
interface circuit Example of user interface circuit
240 W
240 W
2.2 kW
A2 / Brown:
Digital output 1
A3 / White:
Digital output 2
B3 / Yellow:
Digital input ground
B5 / Gray:
Digital input 2
B4 / Pink:
Digital input 1
B2 / Blue:
Analog input ground
B6 / Violet:
Analog input 1
B1 / Gray-pink:
Analog input 2
A4 / White-green:
Ground (GND)
A1 / Blue-red:
Analog output
A5 / Brown-green:
RS485+
A6 / White-yellow:
RS485-
3 / Yellow-green:
Cable Shield
GND
4..20 mA
4...20 mA
Personal
Computer
(Service)
5..24 V
≤ 200 mA
5..24 V
4..20 mA
Analog inputs not galvanically isolated
Max. pin voltage to GND = 10 V
Pin numbers, wire colors
and wire name
510 W
1 / Red:
48 VDC
2 / Black:
Ground/Earth
120 W
+5 V
56 V 10 A
Analog output not galvanically isolated
Digital outputs not galvanically isolated
2.2 kW
PLC connector
≤450 W
Tool
Control
510 W
RS485 - USB
Converter
with
Termination
+5 V
Power connector
AC/DC
Supply
48 VDC

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4.2 Mechanical Installation
CAUTION
High magnetic field strength of fan rotor.
The fan rotor contains magnets with high field strength. This may alter
or damage the calibration of sensitive electronic devices and measuring
instruments in the immediate surroundings. Keep at a safe distance from
computers, monitors and all magnetic data storage media (e.g. disks,
credit cards, audio and video tapes etc.)
!
WARNING
High magnetic field strength of fan rotor if removed from motor.
The fan rotor contains magnets with high field strength. If removed from
motor, pacemakers may be influenced, and magnetic forces may lead
to contusions. Only remove rotor if necessary. Keep distance to
pacemakers and handle fan rotor with care.
!
WARNING
Only specific BFS-i06 bearingless fans are classified for the use in Ex
classified locations. Refer to the corresponding section in the manual.
!
WARNING
In case separation of Ex classified locations is needed at installation, the
relevant safety precautions to fulfill the relevant regulatory requirements
must be considered.
•Ex cable sealing system: An Ex conform solution is needed for the motor cable to leave the Ex area.
One option is an Ex certified cable sealing system as listed in Table 2.
•Rotor handling: The rotor contains permanent magnets which can attract ferromagnetic parts.
Therefore, any ferromagnetic tools and tools with sharp edges should be kept away from the rotor to
avoid injury to personnel and damage to the rotor surface. Do not remove rotor from fan unless
necessary.
•Motor fixation before operation: The motor must be mounted rigidly before operation. The magnetic
bearing is not designed for movement of the fan during operation. Any movement (especially tilting) of
the fan during rotation may lead to a touch-down of the magnetic bearing with potential mechanical
damage to the system.
•Motor fixation, resonances: It should be avoided that the mounting construction can resonate with
the motor. Such resonances will lead to excessive motor currents, heat-up of the system and may lead
to malfunction of the magnetic bearing.
•Mounting holes: The fan can be mounted with four M10 screws on the inlet flange and four M10
screws on the outlet flange. (see Figure 5).
•Cable bending radius: Minimum cable bending radius according to Figure 5 must be ensured.

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5 Operation
CAUTION
Revolving fan rotor.
The fan rotor operates at high rotational speeds. It may cause injury if fingers,
hands, hair, clothes, etc. are getting in touch with the revolving fan rotor. Do not
touch the fan rotor while it is moving.
Please consider the following notes for safe and successful operation of the bearingless fan BFS-i06 to prevent
injury to personnel or damage to equipment:
•Mounting: Only activate the bearingless fan if it is firmly mounted to a rigid non-movable structure.
•Mechanical Protection: Only activate the bearingless fan if the rotor is mechanically protected from
reaching into it. Operating the fan without protection might lead to serious personnel injury or damage
to equipment as a result of objects being pulled into the rotor blades.
5.1 Operation of Bearingless Fan
The following options are available to control the system:
•PLC:Analog and digital inputs and outputs.
•RS485, Service Software: Control through a PC. Service Software is available from Levitronix®
Technical Service Dep. (see Section 6.3). Connection cable available as accessory (see section 2.1).
•RS485, Modbus commands: Digital control through superordinate customer control unit.
The following control modes are available:
•Closed loop speed control: Internal sensors are used to measure the actual rotational speed to
assure accurate control of the setpoint speed.
•Closed loop process (pressure or flow) control: An external pressure or flow sensor must be
connected to the analog input of the PLC. Control parameters need to be adapted according to the
used sensor (response time, delay, scaling), the placement of the sensor (before/after, distance to fan)
and the setup of the hydraulic circuit. Contact Levitronix®Technical Service Department for assistance
(see Section 6.3).
Please refer to the firmware specification document for complete details about the operation of the bearingless
fan BFS-i06. The document can be requested from Levitronix®Technical Service Department (Section 6.3).
5.2 Operation for ATEX / IECEx Application
Specific precautions may be considered while using the bearingless fan in potentially explosive gas
atmospheres according to ATEX / IECEx category 2G/2D (Zone 1 and 21) or 3G/3D (Zone 2 and 22).
!
WARNING
Operational Temperature 85°C T6
Maximum allowed gas temperature is 40°C / 104°F for the use in Ex
classified applications.
!
WARNING
Do not operate the fan against closed valves
Operation against closed valves might lead to increased gas
temperature.

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6 Troubleshooting and Support
6.1 Troubleshooting for Operation with PLC
The integrated PLC provides status and error signals. However, the source of error cannot be identified by
these signals. For detailed analysis and debugging it is recommended to use the Levitronix

Service Software
(see below). Alternatively, the Status, Error, Warning and Message bytes can be read using Modbus
commands on the RS485 interface. The firmware specification document, available at the Levitronix®
Technical Service Department (see Section 6.3), contains all details for configuration and interpretation of
these commands.
6.2 Troubleshooting with Service Software
The Levitronix

Service Software allows communication with the bearingless fan in connection with a PC and
a RS485 to USB converter (see Table 2).
The Service Software can be used to operate the system, for troubleshooting, parameter logging and user
specific system configuration. For usage of the Service Software contact the Technical Service Department
(see Section 6.3).
6.3 Technical Support
For troubleshooting, support and detailed technical information contact Levitronix

Technical Service
Department:
Levitronix

Technical Service Department
Technoparkstr. 1
CH-8005 Zurich
Switzerland
Phone for US: 888-569 07 18
Phone for outside US: [phone]
E-Mail: [e-mail]

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7 Appendix
7.1 Regulatory Status
7.1.1 CE Marking
We herewith declare that the bearingless fan BFS-i06, in its various configurations, is in conformity with the
below mentioned European Directives.
Machinery Directive 2006/42/EC:
The machinery directive essentially has been followed by a risk analysis, according mitigation actions and a
user manual for safe operation. For the design and testing the following standards are used as a guideline:
ISO12100
Safety for machinery –principles for risk assessments: used for system risk analysis.
EMC Directive 2014/30/EC:
The following standards of the EMC directive are tested and confirmed at a certified laboratory:
EN61000-6-2
Generic standards, Immunity for industrial environments
EN61000-6-4
Generic standards, Emission standard for industrial environments
7.1.2 ATEX / IECEx Certification and Marking
Specific BFS-i06 bearingless fans together with specific accessories are in conformity with the requirements
of the Directive 2014/34/EU and the applicable IEC standards. The following standards are tested and
confirmed at a certified laboratory.
IEC / EN 60079-0:2018
Explosive atmospheres - General requirements
IEC / EN 60079-18:2015
Explosive atmospheres - Equipment protection by encapsulation “m”
IEC / EN 80079-36:2016
Explosive atmospheres - Non-electrical equipment for explosive atmospheres - Basic method and
requirements
IEC / EN 80079-37:2016
Explosive atmospheres - Non-electrical equipment for explosive atmospheres - Non electrical type of
protection constructional safety "c", control of ignition source "b", liquid immersion "k"
The Levitronix® Ex-conform bearingless fans are marked clearly and in accordance to the ATEX Directive and
the relevant IECEx standards.
1258
II 2G Ex h mb IIC T6 Gd
II 2D Ex h mb IIIC T85 °C Db
Classification:
Category 2GD (Zone 1 for Gas and Zone 21 for Dust)
Explosion Groups:
Group IIA: Propane (IPA), Methane, Acetone, Acetaldehyde
Group IIB: Ethylene, Ethylene-glycol
Group IIC: Acetylene, Hydrogen (not carbon disulfide)
Group IIIC: conductive dust
Thermal Classification:
Thermal classification of motor is T6 85°C / 185°F for maximum full-load operating temperature at a
maximum gas temperature of 40°C / 104°F.
UL Correspondence:
ATEX / IECEx listing corresponds to UL hazardous location Class 1 Division 2.
7.1.3 Disposal of Equipment –WEEE Directive 2012/19/EU
Follow local legislation for disposal of equipment. In the European Union (EU) marked ( ) devices are
governed by the European WEEE Directive 2012/19/EU. Do not dispose with normal waste.

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7.2 Symbols and Signal Words
Symbol /
Signal Word
Description
Type
Source
DANGER
Indication of an imminently hazardous situation that, if not
avoided, will result in death or severe injury. Limited to the
most extreme situation.
Signal word
SEMI S1-0701
WARNING
Indication of a potentially hazardous situation which, if not
avoided, could result in death or severe injury.
Signal word
SEMI S1-0701
CAUTION
Indication of potentially hazardous situations which, if not
avoided, could result in moderate or minor injury. Also alert
against unsafe practice.
Signal word
SEMI S1-0701
!
Safety alert for “Warning” and “Caution”
Safety alert
SEMI S1-0701
!
Safety alert for “Danger”
Safety alert
SEMI S1-0701
Caution (refer to accompanying documents)
(is used on article labels for reference to manual)
Refer to manual
ISO 3864
General warning
Hazard identification
ISO 3864
Toxic material, poison
Hazard identification
IEC 61310
Corrosive material, corrosion
Hazard identification
IEC 61310
Cut/sever hand, sharp object
Hazard identification
ANSI Z535.3
Strong magnetic field
Hazard identification
SEMI S1-0701
Danger: electricity, electrical hazard
Hazard identification
IEC 61310,
ISO 3864
Wear safety gloves
Hazard avoidance
Mandatory action
IEC 61310
Wear face shield
Hazard avoidance
Mandatory action
SEMI S1-0701
Unplug power line
Hazard avoidance
Mandatory action
SEMI S1-0701
Do not touch
Hazard avoidance
Prohibition
ANSI Z535.4
ISO 3864
No pacemakers
Hazard avoidance
Prohibition
SEMI S1-0701
ATEX Logo
Used for hazard
identification in
warnings
--
Table 7: Safety symbols and signal words