Causes And Remedies - Siemens SIMOTICS M-1PH8 Série Instructions De Service / Instruction De Montage

K3G280-RR03-H4
Siemens AG DI MC + LD
6. MAINTENANCE, MALFUNCTIONS, POSSIBLE

CAUSES AND REMEDIES

Do not perform any repairs on your device. Send the device to ebm-
papst for repair or replacement.
WARNING
Live terminals and connections even with device
switched off
Electric shock
→ Wait five minutes after disconnecting the voltage at all poles
before opening the device.
CAUTION
If control voltage or a stored speed set value is applied,
the motor will restart automatically, e.g. after a power
failure.
Risk of injury
→ Keep out of the device's danger zone.
→ When working on the device, switch off the line voltage
and ensure that it cannot be switched back on.
→ Wait until the device comes to a stop.
→ After working on the device, remove any tools or other
objects from the device.
NOTE
If the device is not operated for a lengthy period in installed
condition in a dry environment, it is to be started up and
operated at full speed for one hour at least every four months. If
the device is not operated for a lengthy period in installed
condition in a damp environment (e.g. outdoors), it is to be
started up and operated at full speed for at least two hours once
a month to move the bearings and allow any condensate that
may have ingressed to evaporate.
Malfunction/fault Possible cause
Impeller not Imbalance in rotating
running smoothly parts
Motor not turning Mechanical blockage
Line voltage faulty
Faulty connection
Motor/electronics Deficient cooling
overtemperature
Item no. 55768-5-9970 · ENU · Change 211390 · Approved 2020-01-17 · Page 11 / 13
ebm-papst Mulfingen GmbH & Co. KG · Bachmühle 2 · D-74673 Mulfingen · Phone +49 (0) 7938 81-0 · Fax +49 (0) 7938 81-110 · info1@de.ebmpapst.com · www.ebmpapst.com
Operating instructions
6.1 Vibration testing
Checking of fan for mechanical vibration based on ISO 14694.
Recommendation: Every 6 months. Max. vibration severity is 3.5 mm/
s, measured at the motor fastening diameter on the motor support plate in
the direction of the motor axis of rotation and perpendicular to this.
Possible remedy
Clean the device;
replace it if imbalance
persists after cleaning.
Make sure no
Fig. 1: Example illustrating vibration measurement. The arrangement of
weight clips are
the sensors depends on the device concerned and the installation
removed during
situation.
cleaning.
Switch off, isolate
6.2 Cleaning
from supply and
remove mechanical
To ensure a long service life, check the fans regularly for proper
blockage.
operation and soiling. The frequency of checking is to be adapted
Check line voltage,
accordingly depending on the degree of soiling.
restore power
supply, apply control
signal.
Isolate from supply,
correct connection;
see connection
diagram.
; Dirt deposits on the motor housing can cause overheating of the motor.
Improve cooling. Let
; Soiling of the impeller can cause vibration that will shorten the service
the device cool down.
To reset the error
; Severe vibration can destroy the fan.
message, switch off
; In such cases, switch off the fan immediately and clean it.
the line voltage for at
least 25 s and then ; The preferred method of cleaning is dry cleaning, e.g. using
switch it on again.
; Do not use aggressive cleaning agents!
Thermal overload
protector activated
Ambient temperature
too high
Impermissible point of
operation
In the event of further malfunctions, contact ebm-papst.
DANGER
Risk of injury from rotating fan.
→ Only clean when not in motion. Do not disconnect the fan
from the power supply, just switch it off via the control input.
This will prevent start-up of the fan.
life of the fan.
compressed air.
Allow motor to cool
off, locate and rectify
cause of error,
release restart lockout
if necessary
Reduce the ambient
temperature.
Reset by reducing
control input to 0.
Correct the operating
point. Let the device
cool down.
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