Installation and commissioning
DIGIDRIVE
Variable speed drive
Réf. 3218 GB - 4.33 / d - 02.02
LEROY-SOMER
77
6 - MAINTENANCE
6.1 - Introduction and warning
• All work relating to installation,
commissioning and maintenance
must be carried out by experienced and
qualified personnel.
• When a fault detected by the drive
causes it to switch off, fatal residual
voltages remain at the output terminals
and in the drive.
• Before carrying out any work,
disconnect and lock the drive power
supply and wait 10 minutes to make
sure that the capacitors have
discharged.
• Check that the DC bus voltage is
below 40V before carrying out any work.
•During maintenance operations
performed with the drive switched on,
the operator must stand on an insulated
surface which is not connected to earth.
• During work on a motor or its
power supply cables, check that the
power supply of the corresponding
drive is disconnected and locked.
• All protective covers must remain
in place during tests.
There are very few maintenance and repair
operations on DIGIDRIVE drives to be
performed by the user. Regular servicing
operations and simple methods for
checking that the drive is operating
correctly are described below.
6.2 - Care
Problems may occur on any drive following
exposure to too high a temperature,
humidity, oil, dust, or after penetration of
any external matter.
Printed circuits and their components do
not normally require any maintenance.
Contact your vendor or the nearest
approved repair company in the event of a
problem.
After storage for a period of 12 months, the
drive must be switched on for 24 hours, and
this operation repeated every 6 months
thereafter.
DO NOT DISMANTLE THE PRINTED
CIRCUITS WHILE THE DRIVE IS STILL
UNDER WARRANTY, AS THIS WOULD
THEN IMMEDIATELY BECOME NULL
AND VOID.
Do not touch the integrated circuits or the
microprocessor either with your fingers or
with materials which are charged or live.
Earth yourself, as well as the workbench or
the soldering iron, when performing any
work on the circuits.
From time to time, check that the power
connections are correctly tightened.
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