FRITSCH PULVERISETTE 4 classic line - Manual (Page 22)

NOTICE!
Fritsch mills are speed controlled. The devices are equipped
for this with frequency converters. In order to comply with
the EMC directive, many measures must be taken to pre-
vent operational transient emissions.
The possible leakage currents resulting from filtering meas-
ures can trigger a conventional residual current circuit
breaker in the mains line. This is no defect!
To prevent this, special residual current circuit breakers,
which are adapted for operation with frequency converters,
are commercially available.
Operation without a residual current switch is possible, but
must be done in accordance with the relevant regulations.
4.6 Connecting the computer
An RS232 interface is located on the front panel of the P-4. Connect this
interface to the RS232 interface on your computer.
4.7 Adjusting the mains voltage
The PULVERISETTE 4 is supplied for connection to a 400 V 3-phase elec-
trical supply only. To adapt it to a different supply network, it must be
connected through a 3-phase converter (04.1800.00).
Technical data:
n Primary 200 V 3-phase or 230 V 3-phase
n Secondary 400 V 3-phase
n Power consumption 10000 VA
n Connection cable 5 m without plug
4.8 Detection of the direction of rotation
It is essential that the phase sequence of the electrical supply is con-
nected in the correct order.
If the phase sequence is correct, the mill will perform properly.
If it is wrong, it will still be possible to operate the mill via the keyboard,
but the mains voltage will not be switched internally. Error code 7 or 8
will appear in the display (see Ä Chapter 10 ‘Repairs’ on page 47).
Installation
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