Retsch PM 200 - Manual (Page 12)

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Retsch GmbH
12
Requirements for the assembly site
Ambient temperature :
5°C to 40°C
When the ambient temperature exceeds or falls below that
specified, the electronic and mechanical components may be
damaged, and performance data changed to an unknown
extent.
Air humidity :
Maximum relative humidity 80% at temperatures up to 31°C,
declining in linear manner down to 50% relative humidity at 40°C
At a higher air humidity, electronic and mechanical
components may be damaged, and performance data
changed to an unknown extent.
Assembly height :
Max. 2000 m above sea level
Electrical connection
 The voltage and frequency for the PM100 or PM200 are
shown on the data plate.
 Ensure that these values agree with the mains power
supply.
 Connect the PM100 or PM200 to the mains power supply
with the power cable supplied.
 When connecting the power cable to the mains supply, use
an external fuse which complies with the regulations
applicable to the assembly site.
Important notes :
1. Electrical connections must use PE conductors !
2. A frequency converter is fitted to the drive unit of your PM100 /
PM200. In order to fulfil the EMV directive, this is equipped with a
mains filter and screened cables to the motor. If your mains power
installation for the PM100 / PM200 contains a residual-current
protective device, then when the frequency converter switched on
(switched on each time the grinding chamber hood is closed), its
interference suppression circuit can cause spurious tripping of the
residual-current protective device, without this being due to a
defect in your PM100 / PM200 or mains power supply.
The state-of-the-art recommends selective, all-current sensitive
residual-current protective devices in such cases. The trip current
needs to be sufficiently dimensioned because short-lived, capacitive
transient currents generated at switch on (screened cables, mains
filter) can easily cause spurious tripping.
Under certain conditions, it may be necessary to operate the PM100
/ PM200 without a residual-current protective device. It must
nevertheless then first be ensured that this does not contradict the
regulations of the local electricity supply utility, or those of other
institutions or applicable standards.
Failure to observe the values on the data plate can cause
damage to electronic and mechanical components.