Safety Instructions - Bosch Servodyn-ASC Betriebshandbuch

1.3 Safety Instructions

Only Qualified
Electro-Personnel
Observe
Standards
Note Capacitor
Discharge Time
Automatic
Restart
Voltage Peaks
Insulation
Measurement
Voltage
with respect to
ground
Different Earth -
Potentials
1070066022 - 101
BOSCH ASC is operating with voltage and when coming into contact it can
cause an extremely dangerous electric shock. The installation of the unit and
accessories, may only be done by qualified electro- personnel who have
received special instructions.
A safe and trouble-free operation is only possible when the valid regulations
according to VDE 0100, VDE 0160 (EN50178), VDE 0113 (EN 60204), VDE
0875 (EN 55011/14/22), and the relevant regulations for your area are followed.
After clearing the frequency inverter the intermediate circuit capacitors are still
charged with high voltage for a short period of time. The unit can be worked on
again after it has been switched off for 5 minutes.
BOSCH ASC may be set, dependent on type, to restart automatically following
a fault stoppage (e.g. Undervoltage Error), when the fault conditions clear.
System design must take this into account, if appropriate, and additional
monitoring or protective features added where necessary.
When using IGBT inverters, high voltage peaks may arise in the motor due to
the switching action of the inverter output devices. These voltage peaks may
damage the insulation of the motor winding and must be taken into account when
using motor cables longer than 15m with high frequency motors. In this case, the
motor can be protected with a motor choke, du/dt- or sine wave filter.
When doing an insulation measurement in accordance with VDE 0100 / Part
620, the power semiconductor of the unit must be disconnected because of the
danger of destruction. This is permissible in compliance with the standard,
since all inverters are given a high voltage test in the end control at BOSCH in
accordance with EN 50178.
Connection of the frequency inverter is only permissible on symetrical networks
with a maximum line voltage (L1, L2, L3) against earth (N,PE) of 300V. An
isolating transformer must be used for supply networks which exceed this value
! The unit may be damaged if this is not observed.
When using components without isolated inputs/outputs, it is necessary that
equipotential bonding exists between the components to be connected (e.g.
through the equalizer). Disregard can cause destruction of the components by
the equalizing currents.
Please make the instruction manual available to everybody. Make sure,
that every user reads and observe the instruction manual. To prevent
damage claims we recommend that you obtain written confirmation.
Servodyn - ASC
General
GB - 7
GB