Siemens SIMATIC S5 1P 243, Operating Instructions & Installation Instructions

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4.7 Noise emissions
WARNING
Noise emissions
During operation, the machine's noise emission levels can exceed those permitted at the
workplace, which can cause hearing damage.
Take steps to reduce noise, such as introducing covers and protective insulation or adopting
hearing protection measures, so that the machine can be operated safely within your system.
4.8 Voltage and frequency fluctuations during line operation
Unless stated otherwise on the rating plate, the permissible voltage fluctuation is ± 10 % and
the permissible frequency fluctuation is ± 2 % in accordance with range B in IEC / EN 60034 1.
The following always applies. Under practical operating conditions a machine may sometimes
have to be operated outside the limits of Range B. Exceptions of this sort should be limited
with regard to the values that arise, how often and for how long they occur. Where possible
and within a reasonable time take corrective actions such as reducing the power. Such actions
can avoid thermal ageing leading to a reduction in the service life of the machine.
NOTICE
Overheating of the winding
Exceeding the permissible tolerances for voltage and frequency can lead to an impermissibly
high temperature rise in the windings and thus cause long-term damage to the machine.
Be aware that every machine must be protected against unpermitted heating. The following
notes apply here:
Every machine must be protected against an inadmissible temperature rise according to IEC /
EN 60079–14 using a current-dependent delayed circuit breaker with phase failure protection
conforming to IEC / EN 60947 or an equivalent device in all phases. The protective equipment
is to be configured to the rated current (the value is on the rating plate). Furthermore, it is to
be selected so that the motor is thermally protected even with a blocked rotor. Windings in a
delta connection are to be protected in such a way that the trip unit or relay is connected in
series with the winding phases. When selecting and configuring the trip unit, the nominal value
of the phase current (i.e. 0.58 times the rated motor current) is to be taken as a basis. If such
a circuit is not possible, then additional protective measures are required (e.g. thermal motor
protection).
Preparations for use
4.8 Voltage and frequency fluctuations during line operation
LOHER CHEMSTAR 1PS5
Operating Instructions 03/2014
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