
2.3. Transport, storage, installation
The inverter must be protected against inadmissible mechanical loads. No components must be
bent and no insulating distances must be altered during transportation or handling. The inverters
are containing electrostatic sensitive components which are liable to damage through improper
use. Do not touch electronic components and electrical contacts. Do not switch on inverters with
mechanical damaged electrical or electronic components, the accordance with the applied directi-
ves is no longer guaranteed in this case. With the installation of the inverter attentio n is to be paid
to the prescribed minimum distances as well as to a sufficient cooling. The climatic conditions shall
be in conformity with EN 50178.
2.4. Electrical connection
Before performing any installation work the system must be insulated from the mains supply and
protected accordingly.
After switching off the line voltage, wait for at least 5 minutes until the DC-link capacitors are
discharged. Only then it is allowed to work on the device. In case of malfunctions, the discharge
time could be exceeded substantially.
Because of a possible leakage current > 3.5mA from the installed EMC-filter, the inverter is designed
only for permanent connection. For size and layout of the GND (earth) conductor also see EN
50178.
The inverters are designed to be installed in a switchgear cabinet and may only operate when
connected with earth-potential.
For a trouble-free operation of the inverter, the installation requirements and notes in this manual
are to be considered.
When using residual-current-operated circuit-breakers pay attention to the compatibility with the
inverter. Depending on the type of the device the following rules apply:
•
Single-phase inverters: pulse-current sensitive (type A) or all-current sensitive (type B) residual-
current-operated circuit-breakers are admissible.
•
Three-phase inverters: only all-current sensitive (type B) residual-current-operated circuit-brea-
kers are admissible.
Otherwise another protective measure such as separation from the environment by double or
reinforced insulation, disconnection from the mains or similar are to be used (EN 50178). The trigger
current of the residual-current-operated circuit-breakers must be sufficiently dimensioned since
capacitive leakage currents (cable screens, filters) can easily lead to false triggering.
2.5. Operating instructions
The inverter can be configured to restart automatically in case of an error. If necessary, the system
must be equipped with additional monitoring or protective features to avoid resulting dangers (see
accident prevention rules etc.).
The motor can be stopped by switching off the setpoint or deactivating the enable input. If required
for safety reasons, an inadvertent restart can be prevented disconnecting the inverter from the
mains supply.
BERGES electronic
4 Operating manual ACM D2/S2 09.07.2001
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