Retsch PM400, Manual

Page: 14 / 60

Transport, scope of delivery, installation
14
When connecting the power cable to the mains supply, use an external fusethat
complies with the regulations applicable to the place of installation .
•
Please check the type plate for details on the necessary voltage and
frequency for the device.
•
Make sure the levels agree with the existing mains power supply.
•
Use the supplied connection cable to connect the device to the mains power
supply.
•
Make sure that the voltage and frequency of your mains connection
corresponds to that on the type plate of the RS200.
–
The mains connection must be fused to at least 16A
–
An electrical connection without protective earth PE is not permitted.
The drive of the device is equipped with a frequency converter . In order to satisfy
the EMC Directive , this is fitted with a mains filter and shielded cables to the
motor. If your mains connection includes a residual current protection device, the
suppressor capacitor wiring of the frequency converter when this is switched on (it
is switched on by closing the grinding chamber hood) can lead to accidental
triggering of the residual current protection device without any error being present
on the device or in the mains installation.
In accordance with the state of the art, selective all current sensitive residual
current protection devices are recommended for such cases. The tripping current
must be sufficiently dimensioned because capacitive compensating current
(shielded cable, mains filter) which only occurs for a short time can easily lead to
accidental triggering.
In certain circumstances it may be necessary to operate the device without a
residual current protection device. It is then necessary, however, to check that this
does not contravene the local regulations of the electricity company or other
institutions and the applicable standards.
3.8 Creating interface connection
Fig. 1: Serial interface
–
When updating the device control or display software, a connection with the
PC is established using the RS232 interface (
SC ).
NOTICE
The interface cables must not be longer than 2.5m. Longer cables can lead to
faults in data transmission.
SC