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W3G990-GZ02-91
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II 2G Ex d e ib IIB T3 Gb
IBExU14ATEX1123 X /05
5.6 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.
; Route the connecting cables in the terminal box so that the terminal
box cover closes without resistance. The strands must not be trapped
between the terminal box cover and housing.
; Screw the terminal box cover back on again. Terminal box tightening
torque, see chapter 4.1 Product drawing.
; 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.
; The supply lines to the add-on unit, e.g. exchanger, must conform to
the IP protection rating (see type plate). Do not route the cables over
any sharp-edged objects.
5.7 Switch on device
The device may only be switched on if it has been installed properly and
in accordance with its intended use, including the required safety
mechanisms and professional electrical connection. This also applies for
devices which have already been equipped with plugs and terminals or
similar connectors by the customer.
; 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.
5.8 Switching off the device
5.8.1 Switch off 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.
5.8.2 Switching off the device for maintenance work
; Switch off the device via the control input.
; Disconnect the device from the supply voltage.
If the device (terminal box cover) has to be opened and disconnected
from the supply line, observe the following:
DANGER
Electrical load (>50 µC, 60 µJ) between mains wire and
protective earth connection after switching off the supply
when switching multiple devices in parallel.
Electric shock, risk of injury
→ Important! The terminal box cover must not be
opened within a potentially explosive area before the
wires (L1, L2, L3) and PE are short-circuited outside
the potentially explosive area (e.g. on the main switch).
; Disconnect the connection line on the device.
; When disconnecting, be sure to disconnect the earth wire connection
last.
Item no. 54008-5-9970 · ENG · Revision 87791 · Release 2016-04-29 · Page 14 / 16
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. INTEGRATED PROTECTIVE FUNCTIONS
The integrated protective functions cause the motor to switch off
automatically in case of faults described in the table.
Malfunctions
Rotor position detection error
Locked rotor
Line under-voltage (mains input
voltage outside of permitted
nominal voltage)
Phase failure
Overtemperature of motor,
electronics interior and power
electronics
7. MAINTENANCE, MALFUNCTIONS, POSSIBLE
CAUSES AND REMEDIES
Do not perform any repairs on your device. Send the device to ebm-
papst for repair or replacement.
During maintenance work on the fan, e.g. when cleaning the fan blades,
the fan must be stationary and the electrical circuit of the ventilation unit
must be interrupted and secured from being switched on again.
; Wait until the device stops.
; Carry out inspections and cleanings according to the Ex protection
class so that no dirt deposits form.
Malfunction/error
Description / Function of
safety feature
No automatic restart occurs.
; After the blockage is
removed, the motor restarts
automatically.
; If the mains supply voltage
returns to permitted values, the
motor restarts automatically.
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.
No automatic restart. Reset the
instrument manually.
WARNING
Live terminals and connections even with device
switched off
Electric shock
→ When shutting off the device, note chapter 5.8 Switching off
the device.# 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
→ When working on the device, switch off the mains power
and ensure that it cannot be switched back on.# Wait until
the device stops.
→ Keep out of the device hazard zone.
→ After working on the device, remove any tools used or
other objects from the fan air paths.
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.
Possible cause
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Possible remedy
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