Retsch ZM 200 - Manual (Page 11)

08.02.2012 Retsch GmbH
11
0003
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, the 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 ZM200 are shown on
the data plate.
Ensure that these values agree with those of the mains
power supply.
Connect the ZM200 to the mains power supply with the
power cable supplied.
When connecting the power cable to the mains supply,
use an external, delayed-action fuse in accordance with
the regulations applicable to the assembly site. We
recommend that no further devices be connected to this
socket.
The main switch of the ZM200 is at the rear. This
protects the device from overloads without the need to
replace a fuse. The ZM200 must solely be allowed to cool
down before being switched on again.
Important notes :
1. Electrical connections must use PE conductors !
2. A frequency converter is fitted to the drive unit of your ZM200. 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 ZM200 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 ZM200 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 ZM200 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.