GB - 7
Prevent
Disturbances
Only Fixed
Connection
Insulation
Measurement
Different
Earth-
Potentials
Voltage with
Respect to
Ground
Note
Capacitor
Discharge
Time
The equipment must not be switched on if it is damaged as it may no longer
comply with mandatory standards. This equipment contains electrostatic sensi-
tive devices which may be damaged by careless handling.
Installation
Make sure that during installation there is enough minimum clearance and enough
cooling. Climatic conditions must be observed in accordance with EN 50178.
Electrical Connection
Before any installation and connection work, the system must be switched off
and secured.
After clearing the R4-S-regenerative unit the DC-bus 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.
Connection of the R4-S-regenerative unit is only permissible on symmetrical
networks with a maximum line voltage (L1,L2,L3) with respect to earth (N/PE) of
290V.
The R4-S-regenerative unit is only designed for a fixed connection, because
when using filters a leakage current >3,5 mA can occur. Protective conductor
cross section must be at least 10mm
2
copper or a 2nd conductor must be
electrically parallel to the protective conductor on separate terminals.
When doing an insulation measurement in accordance with EN 60204 (VDE
0113) the power semiconductor of the unit must be disconnected because of
the danger of destruction. This is permissble in compliance with the standard,
since all inverters are given a high voltage test in the end control at KEB in
accordance with EN 50178 (VDE 0160).
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.
A trouble-free and safe operation of the R4-S-regenerative unit is only guaranteed
when the connection instructions below are strictly followed. Incorrect operation
or damage may result from incorrect installation.
• Note mains voltage and rated motor voltage!
• Install power cables and control cables separtely (> 15 cm)!
• Use shielded/twisted control lines. Connect shield to PE at R4-S-regenerative
unit only!
• Only use suitable circuit elements to control the logic and analog inputs, whose
contacts are rated for extra-low-voltages!
• Make sure housing of the R4-S-regenerative unit is well grounded. The screen
of the cable between the inverter and the motor must be directly and securely
attached to both the inverter PE terminal and the motor ground terminal.
Remove paint finish where necessary!
• Ground the cabinet or the system earth star point with the shortest connection
to mains earth (avoid earth loops).
If connecting of additional transformers is necessary, their impedance must
be selected as small as possible (short circuit voltage max. 2,5%)!
Safety Instructions
