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MAINTENANCE
Powerdrive MD2S Installation guide
4972 en - 2017.08 / d
7 - MAINTENANCE
• All work relating to installation, commissioning
and maintenance must be carried out by
experienced, qualified personnel.
• When a trip detected by the drive causes the motor to
stop, fatal residual voltages remain on the terminals and
in the drive.
• The drive stop function does not protect against high
voltages on the terminal blocks.
• Before carrying out any work on the drive or the motor,
disconnect and padlock the isolating switch in the
switchboard.
• The line switch integrated as an option in the drive
does not isolate the drive input busbars. During the
installation and maintenance phases, make sure that the
power supply line is disrupted.
• When the drive controls a permanent magnet motor,
the isolating switch between the drive and the motor
must be open to avoid the risk of motor voltage feedback.
If there is no isolating switch, make sure the machine
shaft is jammed to prevent it turning while work is carried
out.
• After the drive is switched off, the external control
circuits can still be active and presents dangerous
voltage. Check that these circuits are powered down
before working on the control cables.
• Ensure that the DC bus voltage is below 40V before
carrying out any work (the control board power-on
indicator LED must be off).
• After the drive has been operated, keep away from the
heatsink as it may be very hot (70°C).
• After working on the motor, check that the phase order
is correct when re-connecting the motor cables.
• All protective covers must remain in place during tests.
• Before performing high voltage tests or voltage
withstand tests on the motor, switch off the drive and
disconnect the motor.
There are very few maintenance and repair operations to be
performed by the user on
Powerdrive MD2S
drives. Regular
servicing operations are described below.
•
Servicing
Printed circuits and drive components do not normally
require any maintenance. Contact your vendor or the nearest
approved repair company in the event of a problem.
CAUTION:
Do not dismantle the printed circuits while the drive
is still under warranty, as this immediately makes the
warranty null and void.
Do not touch the integrated circuits or the microprocessor
with your fingers (ESD risk).
From time to time, with the drive powered down, check that
the power connections are correctly tightened. The door
filters must be checked and changed regularly depending on
their state.
•
Preventive maintenance
Device
Action
Frequency
Door filters
(10µm)
Clean (1)
3 months
Replace
2 years
Power connections
Check
tightness
1 year
Internal ventilation and in
cabinet roof
Replace
5 years
Surge suppressor board
Replace
5 years
(1) Door filters are washable.
7.1 - Storage
The
Powerdrive MD2S
incorporates aluminium electrolytic
capacitors.
If the drive has been stored for more than 12 months, it must
therefore be switched on for 5 hrs at the rated operating
voltage, and this operation must be repeated every 6 months.
If the drive has been stored for more than 36 months, the
capacitors must be reformed.
This consists of gradually applying a DC voltage to the banks
of capacitors, until voltage values close to the rated voltages
are achieved, while ensuring that the dissipated power
does not exceed the maximum values authorised by the
manufacturer.
An instruction sheet is available - please contact your local
technical support.
7.2 - Replacing products
CAUTION:
Products must be returned in their original packaging or
in similar packaging, to prevent them being damaged.
Otherwise, replacement under warranty could be refused.
