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MAINTENANCE
POWERDRIVE MD2CS Installation guide
4946 - 2017.12 / c
en
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.
• 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.
• 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 MD2CS
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.
• Preventive maintenance
Device
Action
Frequency
Power connections
Check
tightness
1 year
7.1 - Storage
The
POWERDRIVE MD2CS
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.
7.3 - List of spare parts
7.3.1 - Electronic PCB
Rep.
Description
LS code
3
Control board
PEF400NB000A
4
Distribution board 60T to 150T
PEF190NE000A
Distribution board
ratings 180T to 570T
ratings 270TH to 500TH
PEF720NG000
5
Rating indentification Board
Consult. LS
7
Interface board 60T to 270T
PEF400NE001A
Interface board 340T to 570T
PEF400NE003A
Interface board 270TH to 500TH
PEF280NE100A
9
Voltage sensing Board
PEF280NH000A
26
Control board terminal blocs
KITCTRLTERM
7.3.2 - Fuses on the PEF720NH000 DC bus
measurement board (key 6)
These fuses are placed under the power bridge capacitor
banks, on top of the control block.
Fuse
Size
Type
Value
LS code
Fuse kit
F1
6 x 32
FA
2 A/660 V
PEL002FU004
EDA002LF005
F2
