CG emotron TSA Series, Инструкция по эксплуатации

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CG Drives & Automation 01-5980-01r2 Troubleshooting, Diagnoses and Maintenance 149
11. Troubleshooting, Diagnoses and Maintenance
For a description of the different alarm states, see “Alarm
indications” on page 55.
11.1 Trip conditions, causes and
remedial action
The table later on in this section must be seen as a basic aid
to find the cause of a system failure and how to solve any
problems that arise. Although the softstarter gives a certain
trip message it is not always easy to find the right cause of
the failure. Good knowledge of the complete system is
therefore necessary. Contact your supplier if you have any
questions.
Failures occurring during commissioning or shortly after
commissioning are most likely to be caused by incorrect
settings or even bad connections.
Failures or problems occurring after a reasonable period of
failure-free operation can be caused by changes in the system
or in its environment (e.g. wear).
Failures that occur regularly for no obvious reasons are
generally caused by electromagnetic interference. Be sure
that the installation fulfils the demands for installation
stipulated in the EMC directives. See section 1.5.1, page 6.
Sometimes the so-called “Trial and error” method is a
quicker way to determine the cause of the failure. This can
be done at any level, from changing settings and functions to
disconnecting single control cables or replacing entire units.
The “Trip Message Log” [800] can be useful for determining
why certain trips recur at certain moments. The trip log
records the time of the trip in relation to the run time
counter. Under each trip message the values of a number of
parameters are saved. See Table 37, page 135.
11.1.1 Technically qualified personnel
Installation, commissioning, demounting, making
measurements, etc., of or at the softstarter may only be
carried out by personnel technically qualified for the task.
11.1.2 Opening the softstarter
The connections for the control signals and the switches are
isolated from the mains voltage. Always take adequate
precautions before opening the softstarter.
11.2 Maintenance
The Emotron TSA softstarter is designed to require a
minimum of servicing and maintenance. There are however
some things which must be checked regularly:
• Keep the unit clean and cooling efficient (clean air inlets,
heatsink profile, parts, components, etc)
• For model size 2 and up there is an internal fan that
should be inspected and cleaned from dust if necessary.
• If softstarters are built into cabinets, also check and clean
the dust filters of the cabinets regularly.
• Check external wiring, connections and control signals.
• Check tightening of all terminal screws regularly, espe-
cially important are power and motor cable connections.
Clock battery
If the internal Clock battery (see chapter “Emotron TSA
connections and details” on page 21) needs to be replaced,
the type is CR 2032, 3 V .
Recommended brands are Varta and Renata (max. 70 °C).
For more information on maintenance, please contact your
CG Drives & Automation service partner.
Precautions to take with a connected motor
If work must be carried out on a connected motor or on the
driven machine, the mains voltage must always first be
disconnected from the softstarter.
WARNING!
If it is necessary to open the softstarter or
any part of the system (motor cable housing,
conduits, electrical panels, cabinets, etc.) in
order to inspect or take measurements as suggested in
this instruction manual, it is absolutely necessary to
read and follow the safety instructions in the manual.
WARNING!
Always switch off the mains and control
supply voltage if it is necessary to open the
softstarter.