ebm-papst K3G500-PA23-71 Operating Instructions Manual

Operating instructions

K3G500-PA23-71

Translation of the original operating instructions

ebm-papst Mulfingen GmbH & Co. KG

Bachmühle 2
D-74673 Mulfingen
Phone [phone]
Fax [phone]
[e-mail]
www.ebmpapst.com

CONTENTS

1. SAFETY REGULATIONS AND NOTES

11. SAFETY REGULATIONS AND NOTES

Please read these operating instructions carefully before starting to work
with the device. Observe the following warnings to prevent malfunctions
or physical damage to both property and people.
These operating instructions are to be regarded as part of this device.
If the device is sold or transferred, the operating instructions must
accompany it.
These operating instructions may be duplicated and forwarded for
information about potential dangers and their prevention.

1.1 Levels of hazard warnings

11.1 Levels of hazard warnings
These operating instructions use the following hazard levels to indicate
potentially hazardous situations and important safety regulations:

DANGER

Indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury. Compliance with
the measures is mandatory.

WARNING

Indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury. Exercise extreme
caution while working.

CAUTION

Indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury or damage of property.

NOTE

A potentially harmful situation can occur and, if not avoided, can
lead to property damage.

1.2 Staff qualification

11.2 Staff qualification

The device may only be transported, unpacked, installed, operated,
maintained and otherwise used by qualified, trained and authorised
technical staff.
Only authorised specialists are permitted to install the device, to carry
out a test run and to perform work on the electrical installation.

1.3 Basic safety rules

11.3 Basic safety rules

Any safety hazards stemming from the device must be re-evaluated
once it is installed in the end device.
Observe the following when working on the unit:

; Do not make any modifications, additions or conversions to the

device without the approval of ebm-papst.

1.4 Electrical voltage

11.4 Electrical voltage

; Check the electrical equipment of the device at regular intervals, refer

to chapter 6.3 Safety test.

; Replace loose connections and defective cables immediately.

DANGER
Electrical load on the device

Risk of electric shock

→ Stand on a rubber mat if you are working on an electrically

charged device.

WARNING
Terminals and connections have voltage even with a
unit that is shut off

Electric shock

→ Wait five minutes after disconnecting the voltage at all poles

before opening the device.

21.5 Safety and protective functions

21.6 Electromagnetic radiation

21.7 Mechanical movement

21.8 Emission

21.9 Hot surface

21.10 Transport

21.11 Storage

32. PROPER USE

43. TECHNICAL DATA

43.1 Product drawing

53.2 Nominal data

53.3 Data in accordance with ecodesign regulation EU 327/2011

53.4 Technical features

63.5 Mounting data

63.6 Transport and storage conditions

63.7 Electromagnetic compatibility

64. CONNECTION AND START-UP

64.1 Connecting the mechanical system

64.2 Connecting the electrical system

84.3 Connection in terminal box

84.4 Factory settings

94.5 Connection screen

104.6 Checking the connections

104.7 Switch on device

104.8 Switching off the device

105. INTEGRATED PROTECTIVE FUNCTIONS

106. MAINTENANCE, MALFUNCTIONS, POSSIBLE

CAUSES AND REMEDIES

116.1 Vibration test

116.2 Cleaning

126.3 Safety test

126.4 Disposal

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Operating instructions

K3G500-PA23-71

Translation of the original operating instructions

CAUTION
In the event of failure, there is electric voltage at the
rotor and impeller

The rotor and impeller are base insulated.

→ Do not touch the rotor and impeller once they are installed.

CAUTION
If control voltage is applied or a speed setpoint is stored,
the motor will restart automatically, e.g. after a mains
failure.

Risk of injury

→ Keep out of the device hazard zone.# When working on the

device, switch off the mains power and ensure that it cannot
be switched back on.

→ Wait until the device stops.

→ After working on the device, remove any tools used or

other objects from the device.

1.5 Safety and protective functions

DANGER
Protective device missing and protective device not
functioning

Without a protective device there is a risk of serious injury, for
instance if the hands reach or are sucked into the device during
operation.

→ Operate the device only with a fixed protective device and

guard grille.# The fixed protective device must be able to
withstand the kinetic energy of a fan blade that becomes
detached at maximum speed. There must not be any gaps
which it is possible to reach into with the fingers, for example.

→ The device is a built-in component. As the operator, you

are responsible for ensuring that the device is secured
adequately.

→ Stop the device immediately if a protective device is

found to be missing or ineffective.

1.6 Electromagnetic radiation

Interference from electromagnetic radiation is possible, e.g. in conjunction
with open and closed-loop control devices.
If unacceptable emission intensities occur when the fan is installed,
appropriate shielding measures have to be taken by the user.

NOTE
Electrical or electromagnetic interferences after
integrating the device in installations on the customer's
side.

→ Verify that the entire setup is EMC compliant.

1.7 Mechanical movement

DANGER
Rotating device

Body parts that come into contact with the rotor and impeller
can be injured.

→ Secure the device against accidental contact.

→ Before working on the system/machine, wait until all

parts have come to a standstill.

DANGER
Flying parts

Missing safety devices may cause balancing weights or
broken fan blades to be ejected at high speeds, causing bodily
harm.

→ Take appropriate safety measures.

WARNING
Rotating device

Long hair, dangling items of clothing, jewellery and similar items
can become entangled and be pulled into the device. Risk of
injury.

→ Do not wear any loose-fitting or dangling clothing or jewellery

while working on rotating parts.# Protect long hair with a cap.

1.8 Emission

WARNING
Depending on the installation and operating conditions,
a sound pressure level greater than 70 dB(A) may arise.

Danger of noise-induced hearing loss

→ Take appropriate technical safety measures.

→ Protect operating personnel with appropriate safety

equipment, e.g. hearing protection.

→ Also observe the requirements of local agencies.

1.9 Hot surface

CAUTION
High temperature at the electronics housing

Risk of burns

→ Ensure sufficient contact protection.

1.10 Transport

WARNING
Transportation of fan

Injuries from tipping or slipping

→ Always transport the fan carefully and only in its original

packaging. Impact arising from setting down too hard or at an
angle can cause bearing damage or deformation at the frame
and impeller. #The fans must always be transported and
handled such that they cannot tip over. #Transport the fan
"upright", in other words with the axis horizontal. #Secure
the fan(s) with a lashing strip for example so that nothing can
slip or tip up, particularly when stacking several fans. #Also
make allowance for possible wind forces.

1.11 Storage

; Store the device, partially or fully assembled, in the original

packaging in a clean, dry and weatherproof place free of vibrations.

; Protect the device against environmental effects and dirt until final

installation.

; We recommend storing the device for no longer than one year in

order to guarantee trouble-free operation and longest possible service
life.

; Even devices explicitly intended for outdoor use are to be stored as

described prior to commissioning.

; Maintain the storage temperature, see

chapter 3.6 Transport and storage conditions.

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Operating instructions

K3G500-PA23-71

Translation of the original operating instructions

; Please make sure that all screwed cable glands are fitted with

dummy plugs.

2. PROPER USE

The device is exclusively designed as a built-in device for conveying
air according to its technical data.
Any other usage above and beyond this does not conform with the
intended purpose and constitutes misuse of the device.
Customer equipment must be capable of withstanding the mechanical
and thermal stresses that can arise from this product. This applies for the
entire service life of the equipment in which this product is installed.

Proper use also includes:

● Use the device in power systems with earthed neutral (TN/TT power

systems) only.

● Only using the device in stationary systems.

● Carrying out all maintenance.

● Conveying of air at an ambient air pressure of 800 mbar to 1050 mbar.

● Using the device in accordance with the permitted ambient

temperature, see chapter 3.6 Transport and storage conditions and
chapter 3.2 Nominal data.

● Operating the device with all protective features in place.

● Minding the operating instructions.

Improper use

Using the device in the following ways is particularly prohibited and
may cause hazards:

● Operating the device with an imbalance, e.g. caused by dirt deposits

or icing.

● Resonance mode, operation with heavy vibrations. These also

include vibrations that are transmitted from the customer system to the
fan.

● Operation in medical equipment with a life-sustaining or lifesaving

function.

● Operation with external vibrations.

● Moving solids content in flow medium.

● Painting the device

● Connections (e.g. screws) coming loose during operation.

● Opening the terminal box during operation.

● Moving air that contains abrasive particles.

● Moving highly corrosive air, e.g. salt spray mist. Exceptions are

devices that are intended for salt spray mist and protected accordingly.

● Moving air that contains dust pollution, e.g. suctioning off saw dust.

● Operating the device close to flammable materials or components.

● Operating the device in an explosive atmosphere.

● Using the device as a safety component or for taking on safety-

related functions.

● Operation with completely or partially disassembled or modified

protective features.

● In addition, all application options that are not listed under proper use.

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Operating instructions

K3G500-PA23-71

Translation of the original operating instructions

3. TECHNICAL DATA

3.1 Product drawing

All measures have the unit mm.

1 Installation position: Shaft horizontal (install the support struts only vertically as shown in the illustration!) or rotor on bottom; rotor on top on

request

2 Cable diameter min. 4 mm, max. 10 mm, tightening torque 4±0.6 Nm
3 Tightening torque 3.5±0.5 Nm
4 Inlet nozzle with pressure tap (k-factor: 281)
5 Mounting holes for FlowGrid

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Operating instructions

K3G500-PA23-71

Translation of the original operating instructions

3.2 Nominal data

Motor M3G150-FF

Phase 3~
Nominal voltage / VAC 400
Nominal voltage
range / VAC

380 .. 480

Frequency / Hz 50/60

Type of data definition ml
Speed (rpm) / min

-1

1910

Power input / W 3450
Current draw / A 5.3
Min. ambient
temperature / °C

-25

Max. ambient
temperature / °C

40

ml = Max. load · me = Max. efficiency · fa = Running at free air
cs = Customer specs · cu = Customer unit

Subject to alterations

3.3 Data in accordance with ecodesign regulation EU 327/
2011

Actual Request 2015

01 Overall efficiency ηes / % 68.7 57.2
02 Measurement category A
03 Efficiency category Static
04 Efficiency grade N 73.5 62
05 Variable speed drive Yes
06 Year of manufacture

The year of manufacture is specified on the
rating plate on the product.

07 Manufacturer

ebm-papst Mulfingen GmbH & Co. KG
County court Stuttgart · HRA 590344
D-74673 Mulfingen

08 Type K3G500-PA23-71
09 Power input Ped / kW 3.46
09 Air flow qv / m³/h 8740
09 Pressure increase total psf /Pa929

10 Speed (rpm) n / min

-1

1910

11 Specific ratio

*

1.01

12 Recycling/disposal

Information on recycling and disposal is
provided in the operating instructions.

13 Maintenance

Information on installation, operation and
maintenance is provided in the operating
instructions.

14 Additional components

Components used to calculate the energy
efficiency that are not apparent from the
measurement category are detailed in the
CE declaration.

*

Specific ratio = 1 + pfs / 100 000 Pa

Data definition with optimum efficiency. The ErP data is determined using a motor-impeller
combination in a standardised measurement configuration.

3.4 Technical features

Mass 38.7 kg
Size 500 mm
Surface of rotor Coated in black
Material of electronics
housing

Die-cast aluminium

Material of impeller Aluminium sheet
Material of mounting
plate

Sheet steel, galvanised

Material of support
bracket

Steel, coated in black

Material of inlet nozzle Sheet steel, galvanised
Number of blades 5
Direction of rotation Clockwise, seen on rotor
Type of protection IP 55
Insulation class "F"
Humidity (F)/
environmental
protection class (H)

H1

Mounting position Refer to product drawing
Condensate discharge
holes

Rotor-side

Operation mode S1
Motor bearing Ball bearing
Technical features - Output 10 VDC, max. 10 mA

- Operation and alarm display

- External 24 V input (programming)

- External release input

- Integrated PID controller

- Motor current limit

- PFC, passive

- RS485 MODBUS RTU

- Soft start

-Maximum EEPROM write cycles
100,000

- Control input 0-10 VDC / PWM

- Control interface with SELV potential
safely disconnected from the mains

- Over-temperature protected
electronics / motor

- Line undervoltage / phase failure
detection

Touch current acc.
IEC 60990 (measuring
network Fig. 4, TN
system)

<= 3.5 mA

Electrical leads Via terminal box
Motor protection Reverse polarity and locked-rotor

protection

Protection class I (if protective earth is connected by

customer)

Product conforming
to standard

EN 61800-5-1; CE

Approval EAC

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Operating instructions

K3G500-PA23-71

Translation of the original operating instructions

For cyclic speed loads, note that the rotating parts of the device
are designed for maximum one million load cycles. If you have
specific questions, contact ebm-papst for support.

Notes on surface quality

The surfaces of the products conform to the generally applicable industrial
standard. The surface quality may vary during the production period.
Strength, dimensional stability and dimensional accuracy are not affected
by this.
The colour pigments of the paints used react perceptibly to UV light over
the course of time. This does not however have any influence on the
technical properties of the products. To prevent the formation of patches
and fading, the product is to be protected against UV radiation. Changes
in colour are not a reason for complaint and are not covered by the
warranty.

3.5 Mounting data

; Secure the mounting screws against accidentally coming loose (e.g.

by using self-locking screws).

Strength class for
mounting screws

8.8

You can obtain additional mounting data from the product drawing if
necessary.

3.6 Transport and storage conditions

; Use the device in accordance with its protection type.

Max. permissible
ambient motor temp.
(transp./ storage)

+80 °C

Min. permissible
ambient motor temp.
(transp./storage)

-40 °C

3.7 Electromagnetic compatibility

EMC interference
immunity

Acc. to EN 61000-6-2 (industrial
environment)

EMC interference
emission

Acc. to EN 61000-6-4 (industrial
environment)

If several devices are switched in parallel on the mains side so
that the line current of the arrangement is in the range of 16 - 75
A, then this arrangement conforms to IEC 61000-3-12 provided
that the short-circuit power Ssc at the connection point of the
customer system to the public power system is greater than or
equal to 120 times the rated output of the arrangement.
It is the responsibility of the installation engineer or operator/
owner of the device to ensure, if necessary after consultation
with the network operator, that this device is only connected to
a connection point with a Ssc value that is greater than or equal
to 120 times the rated output of the arrangement.

4. CONNECTION AND START-UP

4.1 Connecting the mechanical system

CAUTION
Cutting and crushing hazard when removing device
from packaging

→ Carefully remove the device from its packaging, only

touching the housing. Strictly avoid shocks.# Wear safety
shoes and cut-resistant safety gloves.

CAUTION
Device weighs more than 25 kg! Heavy load when
removing the device!

Risk of physical injury, such as back injuries.

→ Use suitable hoisting equipment to remove the device from

the packaging.

NOTE
Damage to device from vibration

Bearing damage, reduced service life

→ Forces or impermissibly high vibration levels must not be

transmitted to the fan from system components. #If the fan is
connected to air ducts, it should isolated from vibrations, for
example using compensators or similar elements. #Fasten
the fan to the substructure without distorting it.

; The fan may not be handled in the area around the inlet nozzle during

transport and installation.
There is a risk of damage to the impeller.

; Check the device for transport damage. Damaged devices must no

longer be installed.

; Install the undamaged device according to your application.

CAUTION
Possibility of damage to the device

Serious damage may result if the device slips during assembly.

→ Keep the device fixed in position at the installation location

until all attachment screws have been tightened.

4.2 Connecting the electrical system

DANGER
Electric voltage on the device

Electric shock

→ Always install a protective earth first.

→ Check the protective earth.

DANGER
Incorrect insulation

Risk of fatal injury from electric shock

→ Use only cables that meet the specified installation

requirements for voltage, current, insulation material, load etc.

→ Route cables such that they cannot be touched by any

rotating parts.

DANGER
Electrical load (>50 µC) between mains wire and
protective earth connection after switching of the supply
when switching multiple devices in parallel.

Electric shock, risk of injury

→ Make sure that sufficient protection against accidental contact

is provided.

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Operating instructions

K3G500-PA23-71

Translation of the original operating instructions

Before working on the electrical connection, the
connections to the mains supply and PE must be shorted.

CAUTION
Electrical voltage

The fan is a built-in component and features no electrically
isolating switch.

→ Only connect the fan to circuits that can be switched off with

an all-pole separating switch.

→ When working on the fan, you must switch off the

installation/machine in which the fan is installed and secure it
from being switched on again.

NOTE
Interferences and failures are possible

Maintain a distance to the power supply line when routing the
control lines of the device.

→ Ensure a sufficiently large clearance.

Recommendation: clearance > 10 cm (separate cable
routing)

NOTE
Water penetration into leads or wires

Water enters at the cable end on the customers side and can
damage the device.

→ Make sure that the cable end is connected in a dry

environment.

Connect the device only to circuits that can be switched off
using an all-pole disconnecting switch.

4.2.1 Prerequisites

; Check that the data on the type plate match the connection data.

; Before connecting the device, ensure that the supply voltage matches

the operating voltage of the device.

; Only use cables designed for current according to the type plate.

For determining the cross-section, follow the basic principles in
accordance with EN 61800-5-1. The protective earth must have a
cross-section equal to or greater than the outer conductor cross­section.
We recommend the use of 105°C cables. Ensure that the minimum
cable cross-section is at least
AWG26/0.13 mm².

Protective earth contact resistance as per EN 61800-5-1

Compliance with the resistance specifications as per EN 61800-5-1 for
the protective earth connection circuit must be verified in the application.
Depending on the installation situation, it may be necessary to connect
an additional protective earth conductor by way of the extra protective
earth terminal provided on the device. The protective earth terminal is
located on the housing and provided with a protective earth symbol and
a hole.

4.2.2 Power supply connection, fuse protection

Assignment of conductor cross-sections and the fuse protection required
for them (overload protection only, no device protection).

Nominal
voltage

Safety
fuse

Automatic
circuit
breaker

Wire
cross­section

Wire
cross­section

VDE UL VDE mm² *AWG
3/PE AC
380 - 480
VAC

16 A 15 A C16A 1.5 16

3/PE AC
380 - 480
VAC

20 A 20 A C20A 2.5 14

3/PE AC
380 - 480
VAC

25 A 25 A C25A 4.0 12

3/PE AC
380 - 480
VAC

32 A 30 A C32A 6.0 10

* AWG = American Wire Gauge

4.2.3 Idle current

Because of the EMC filter integrated for compliance with EMC
limits (interference emission and interference immunity), idle
currents in the mains cable can be measured even when the
motor is at a standstill and the mains voltage is switched on.

● The values are typically in the range < 250 mA

● At the same time, the effective power in this operating state

(operational readiness) is typically < 5 W.

4.2.4 Residual current operated device

If the use of a residual current device (RCD) is required in your
installation, only universal residual current devices (type B or
B+) are permissible. Residual current devices (RCD) cannot
provide personal safety while operating the device, as is also
the case with frequency converters. When the device power
supply is switched on, charging current pulses from the
capacitors in the integrated EMC filter can lead to the instant
triggering of residual current devices. We recommend residual
current circuit breakers (RCCB) with an activation threshold of
300 mA and delayed tripping (super-resistant, characteristic K).

4.2.5 Leakage current

For asymmetrical power systems or if a phase fails, the
leakage current can increase to a multiple of the nominal value.

4.2.6 Locked-rotor protection

Due to the locked-rotor protection, the start-up current (LRA) is
equal to or less than the nominal current (FLA).

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Operating instructions

K3G500-PA23-71

Translation of the original operating instructions

4.3 Connection in terminal box

4.3.1 Preparing connection lines for the connection

Strip the cable just enough so that the screwed cable gland is tight and
the terminals are relieved of strain. Tightening torque, see chapter 3.1
Product drawing.

NOTE
Tightness and strain relief depend on the cable used.

→ The user must check this.

Fig. 1: Recommended stripping lengths in mm (inside the terminal box)
Legend: CL = control lines

4.3.2 Connecting cables with terminals

WARNING
Terminals and connections have voltage even with a
unit that is shut off

Electric shock

→ Wait five minutes after disconnecting the voltage at all poles

before opening the device.

; Remove the cap from the screwed cable gland.

Remove the cap only in those places where cables are inserted.

; Mount the screwed cable glands with the seal inserts provided in the

terminal box.

; Insert the line(s) (not included in the standard scope of delivery) into

the terminal box.

; First connect the "PE" (protective earth) connection.

; Connect the lines to the corresponding terminals.

Use a screwdriver to do so.
During the connection work, ensure that no cables splice off.

Fig. 2: Connecting the wires to terminals

; Seal the terminal box.

4.3.3 Cable routing

No water may penetrate along the cable in the direction of the cable gland.

4.4 Factory settings

Factory settings with which the device is pre-set by ebm-papst.

Control mode
parameter set 1

PWM controlling

Control mode
parameter set 2

PWM controlling

Fan / device adress 01
Max. PWM / % 100
Min. PWM / % 5
Save set value to
EEPROM

Yes

Set value control Analogue (linear)
Control function
parameter set 1

Positive (heating)

Control function
parameter set 2

Positive (heating)

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Operating instructions

K3G500-PA23-71

Translation of the original operating instructions

4.5 Connection screen

No. Conn. Designation Function / assignment
KL 1 1 L1 Mains supply connection, supply voltage 3~380-480 VAC; 50/60 Hz
KL 1 2 L2 Mains supply connection, supply voltage 3~380-480 VAC; 50/60 Hz
KL 1 3 L3 Mains supply connection, supply voltage 3~380-480 VAC; 50/60 Hz
PE PE Earth connection, PE connection
KL 2 1 RSA Bus connection RS-485, RSA, MODBUS RTU; SELV
KL 2 2 RSB Bus connection RS-485, RSB, MODBUS RTU; SELV
KL 2 3 GND Signal ground for control interface; SELV
KL2 4 C Status relay; floating status contact; changeover contact; common connection;

contact rating 250 VAC / 2 A (AC1)

KL 2 5 Din1 Digital input 1 enabling of electronics,

enabling: open pin or applied voltage 5-50 VDC
disabling: bridge to GND or applied voltage <1 VDC
reset function: triggers software reset after a level change to <1 V; SELV

KL 2 6 + 10 V Fixed voltage output 10 VDC; +10 V -3 %, max. 10 mA, short-circuit-proof, power supply for external

devices (e.g. potentiometer); SELV
Alternative: +24 VDC input for parametrisation via MODBUS without mains power

KL 2 7 Ain1 U Analogue input 1 (set value) 0-10 V, Ri=100 kΩ, parametrisable curve; SELV
KL2 8 NC Status relay, floating status contact; break for failure

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Operating instructions

K3G500-PA23-71

Translation of the original operating instructions

4.6 Checking the connections

; Make sure that the power is off (all phases).

; Secure it from being switched on again.

; Check the correct fit of the connection lines.

; Screw the terminal box cover closed again. Terminal box tightening

torque, see chapter 3.1 Product drawing.

; Route the connecting cables in the terminal box so that the terminal

box cover closes without resistance.

; Use all plug screws (the entire number). In doing so, insert the

screws manually to avoid damage to the thread.

; Make sure that the terminal box is correctly closed and sealed and

that all screws and screwed cable glands are properly tightened.

4.7 Switch on device

The device is not to be switched on until it has been installed properly
and in accordance with its intended use, including the required protective
devices and professional electrical connection. This also applies to
devices which have already been equipped with plugs and terminals or
similar connectors by the customer.

WARNING
Hot motor housing

Fire hazard

→ Ensure that no combustible or flammable materials are

located close to the fan.

; Inspect the device for visible external damage and the proper function

of the protective features before switching it on.

; Check the air flow paths of the fan for foreign objects and remove any

that are found.

; Apply the nominal voltage to the voltage supply.

; Start the device by changing the input signal.

NOTE
Damage to device by vibrations

Bearing damage, reduced service life

→ The fan must operate free of vibrations throughout its speed

control range. #Strong vibrations can result from improper
handling, imbalance resulting from damage during transport,
or component-induced or structural resonances. #When
putting the fan into service, determine the speed ranges with
excessive vibration levels and also any resonance
frequencies that may be present. #When regulating the
speed, pass through resonance ranges as quickly as
possible or find another remedy.# Operation at excessive
vibration levels can lead to premature failure.

4.8 Switching off the device

Switching off the device during operation:

; Switch off the device via the control input.

; Do not switch the motor (e.g. in cyclic operation) on and off via power

supply.

Switching off the device for maintenance work:

; Switch off the device via the control input.

; Do not switch the motor (e.g. in cyclic operation) on and off via power

supply.

; Disconnect the device from the supply voltage.

; When disconnecting, be sure to disconnect the earth wire connection

last.

5. INTEGRATED PROTECTIVE FUNCTIONS

The integrated protective functions cause the motor to switch off
automatically in case of faults described in the table.

Malfunctions Description / Function of

safety feature

Rotor position detection error An automatic restart occurs.
Locked rotor ; After the blockage is

removed, the motor restarts

automatically.
Line under-voltage (mains input
voltage outside of permitted
nominal voltage)

; If the mains supply voltage

returns to permitted values, the

motor restarts automatically.
Phase failure A phase of the supply voltage

fails for at least 5 s.

; If all phases are correctly

supplied again, the motor

automatically restarts after 10 -

40 s.

6. MAINTENANCE, MALFUNCTIONS, POSSIBLE
CAUSES AND REMEDIES

Do not perform any repairs on your device. Return the device to ebm­papst for repair or replacement.

WARNING
Terminals and connections have voltage even with a
unit that is shut off

Electric shock

→ Wait five minutes after disconnecting the voltage at all poles

before opening the device.

CAUTION
If control voltage is applied or a speed setpoint is stored,
the motor will restart automatically, e.g. after power
failure.

Risk of injury

→ Keep out of the device danger zone.# When working on the

device, switch off the mains power and ensure that it cannot
be switched back on.

→ After working on the device, remove any tools used or

other objects from the device.

If the device remains out of use for over four months, we
recommend switching the device on for at least three hours at
full speed to allow any condensate to evaporate and to move
the bearings.

Malfunction/error Possible cause Possible remedy

Item no. 54419-5-9970 · ENG · Revision 90170 · Release 2016-07-14 · Page 10 / 12

ebm-papst Mulfingen GmbH & Co. KG · Bachmühle 2 · D-74673 Mulfingen · Phone [phone] · Fax [phone] · [e-mail] · www.ebmpapst.com

Operating instructions

K3G500-PA23-71

Translation of the original operating instructions

Impeller running
roughly

Imbalance in rotating
parts

Clean the device; if
imbalance is still
evident after cleaning,
replace the device.
If you have
attached any weight
clips during cleaning,
make sure to remove
them afterwards.

Motor does not turn Mechanical blockage Switch off, de-

energise, and
remove mechanical

blockage.
Mains supply voltage
faulty

Check mains supply

voltage,

restore power

supply.

Important! The error

message resets

automatically.

The device starts up

again automatically

without advance

warning.
Faulty connection De-energise, correct

connection, see

connection diagram.
Motor winding broken Replace device
Insufficient cooling Improve cooling. Let

the device cool down.

To reset the error

message, switch off

the mains supply

voltage for a min. of

25 s and switch it on

again.

Alternatively, reset

the error message by

applying a control

signal of <0.5 V to

DIN1 or by short

circuiting Din1 to

GND.
Ambient temperature
too high

Reduce the ambient

temperature. Let the

device cool down.

To reset the error

message, switch off

the mains supply

voltage for a min. of

25 s and switch it on

again.

Alternatively, reset

the error message by

applying a control

signal of <0.5 V to

DIN1 or by short

circuiting Din1 to

GND.

Unacceptable
operating point (e.g.
counterpressure is
too high)

Correct the operating
point. Let the device
cool down.
To reset the error
message, switch off
the mains supply
voltage for a min. of
25 s and switch it on
again.
Alternatively, reset
the error message by
applying a control
signal of <0.5 V to
DIN1 or by short
circuiting Din1 to
GND.

If you have any other problems, contact ebm-papst.

6.1 Vibration test

Checking the fan for mechanical vibrations based on ISO 14694.
Recommendation: every 6 months. Maximum vibration severity is 3.5
mm/s measured at the motor’s fastening diameter on the motor support
plate towards and perpendicular to the motor’s axis of rotation.

Fig. 3: Example showing vibration measurement. Positioning of the
sensors will vary depending on the device and the circumstances of
installation.

6.2 Cleaning

NOTE
Damage to the device during cleaning

Malfunction possible

→ Do not use a high-pressure cleaner to clean the device.# Do

not use any acid, alkali or solvent-based cleaning agents.

→ Do not use any pointed or sharp-edged objects for cleaning

Item no. 54419-5-9970 · ENG · Revision 90170 · Release 2016-07-14 · Page 11 / 12

ebm-papst Mulfingen GmbH & Co. KG · Bachmühle 2 · D-74673 Mulfingen · Phone [phone] · Fax [phone] · [e-mail] · www.ebmpapst.com

Operating instructions

K3G500-PA23-71

Translation of the original operating instructions

6.3 Safety test

NOTE
High-voltage test

The integrated EMC filter contains Y capacitors. Therefore, the
trigger current is exceeded when AC testing voltage is applied.

→ Test the device with DC voltage when you carry out the

high-voltage test required by law. The voltage to be used
corresponds to the peak value of the AC voltage required by
the standard.

What has to
be tested?

How to test? Frequency Which

measure?

Check the
protective
casing against
accidental
contact for
damage and to
ensure that it is
intact

Visual inspection At least every

6 months

Repair or
replacement of
the device

Check the
device for
damage to
blades and
housing

Visual inspection At least every

6 months

Replacement of
the device

Mounting the
connection lines

Visual inspection At least every

6 months

Fasten

Check the
insulation of the
wires for damage

Visual inspection At least every

6 months

Replace wires

Impeller for
wear/deposits/
corrosion and
damage

Visual inspection At least every

6 months

Clean or
replace impeller

Tightness of
screwed cable
gland

Visual inspection At least every

6 months

Retighten,
replace if

damaged
Condensate
discharge holes
for clogging, as
necessary

Visual inspection At least every

6 months

Open bore holes

Abnormal
bearing noise

acoustic At least every

6 months

Replace device

Vibration test Vibration meter,

ramp-up or
ramp-down
measurement

Recommended
every 6 months

Clean and

rebalance

impeller,

replace if

necessary

6.4 Disposal

For ebm-papst, environmental protection and resource preservation are
top priority corporate goals.
ebm-papst operates an environmental management system which is
certified in accordance with ISO 14001 and rigorously implemented
around the world on the basis of German standards.
Right from the development stage, ecological design, technical safety
and health protection are fixed criteria.
The following section contains recommendations for ecological disposal
of the product and its components.

6.4.1 Country-specific legal requirements

NOTE
Country-specific legal requirements

Always observe the applicable country-specific legal
regulations with regard to the disposal of products or waste
occurring in the various phases of the life cycle. The
corresponding disposal standards are also to be heeded.

6.4.2 Disassembly

Disassembly of the product must be performed or supervised by
qualified personnel with the appropriate technical knowledge.
The product is to be disassembled into suitable components for disposal
employing standard procedures for motors.

WARNING
Heavy parts of the product may drop off. Some of the
product components are heavy. These components
could drop off during disassembly.

This can result in fatal or serious injury and material damage.

→ Secure components before unfastening to stop them falling.

6.4.3 Component disposal

The products are mostly made of steel, copper, aluminium and plastic.
Metallic materials are generally considered to be fully recyclable.
Separate the components for recycling into the following categories:

● Steel and iron

● Aluminium

● Non-ferrous metal, e.g. motor windings

● Plastics, particularly with brominated flame retardants, in accordance

with marking

● Insulating materials

● Cables and wires

● Electronic scrap, e.g. circuit boards

Only ferrite magnets and not rare earth magnets are used in external
rotor motors from ebm-papst Mulfingen GmbH & Co. KG.

; Ferrite magnets can be disposed of in the same way as normal iron

and steel.

Electrical insulating materials on the product, in cables and wires are
made of similar materials and are therefore to be treated in the same
manner.
The materials concerned are as follows:

● Miscellaneous insulators used in the terminal box

● Power lines

● Cables for internal wiring

● Electrolytic capacitors

Dispose of electronic components employing the proper procedures for
electronic scrap.

→ Please contact ebm-papst for any other questions on disposal.

Item no. 54419-5-9970 · ENG · Revision 90170 · Release 2016-07-14 · Page 12 / 12

ebm-papst Mulfingen GmbH & Co. KG · Bachmühle 2 · D-74673 Mulfingen · Phone [phone] · Fax [phone] · [e-mail] · www.ebmpapst.com