25
Maintenance of CERTO-FU controller
The controller is maintenance-free. The settings should
be compared with the data sheets. It is important to
ensure unhindered heat dissipation. Impurities may be
removed with a slightly moistened cloth. Do not use
cleaning agents containing solvents.
Caution!
A built-in restart mode incorporated in the software
means that in the event of over- or under-voltage and
overcurrent, the controller does not immediately trigger
a fault but attempts to reset itself for around 10 minutes.
If the reset process can be performed within this 10-min-
ute period, the controller resumes normal operation.
However, if the FC-KB is unable to reset itself due to a
longer-lasting fault, a fault signal is indicated on the fault
signal output after 10 minutes and the fault message
appears on the controller display.
Warning!
This function triggers an automatic restart of the frequen-
cy converter and thus of the drive unit in the event of a
fault after the configured waiting time has elapsed – pro-
vided a start instruction has been given. Care should be
taken to ensure that no persons are endangered in the
event of a restart.
Warning!
This frequency converter creates dangerous electrical
voltage and controls dangerous rotating parts. Failure to
comply with the information in this manual could cause
death, severe bodily injury or significant physical dam-
age.
The installation, initial operation and maintenance of this
drive may only be performed by expert staff that are well
versed in the functionality and equipment as well as the
machine.
The installation, initial operation and maintenance of this
drive may only be performed by expert staff that are well
versed in the functionality and equipment as well as the
machine.
The device contains intermediate circuit capacitors that
also carry out switchover of dangerously high voltages
on the grid side. After switching off the voltage, wait at
least 15 minutes before opening the device and working
on it. Please be sure that no live parts are touched.
The ground fault safety serves only as protection for the
frequency converter and not as personal protection. In
accordance with VDE 0160 (German abbreviation for
the Association for Electrical, Electronic &Information
Technologies), the three-phase frequency converter must
not be operated on a leakage current circuit breaker,
because a possible direct current component will reduce
the sensitivity of the leakage current circuit breaker in the
event of a fault.
For safety precautions consider of all regulations of
VDE 0160
Warning!
Ground the frequency converter to the connection provid-
ed for it.
Warning!
To avoid injury and damage, do not touch any parts within
the housing – not with hands or any kind of object – when
mains voltage is present or the intermediate circuit capac-
itor is not loaded. Do not work on wiring or test signals
when mains voltage is present.
Pay special attention when the automatic restart is activat-
ed. To avoid injury from possible uncontrolled restart of the
frequency converter after a power outage, install a switch
element on the grid side that de-energises in a power
outage and can only be turned on after return of voltage
by manual confirmation (e.g., contactor, etc.).
25
Maintenance and operation
Содержание CERTO
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