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4.7
Thermal motor protection
The machine is equipped as standard with a temperature sensor, optionally with PTC
thermistors to directly monitor the motor temperature in order to protect the machine against
overload in operation. Plan a corresponding circuit for monitoring.
See also
Connecting the temperature sensor (Page 83)
4.8
Overheating during periodic duty
NOTICE
Non-periodic duty
In all of the operating modes, always operate the external fan according to DIN EN 60034-1.
For non-periodic operation, it is possible that the machine is thermally overloaded. This can
result in damage to the machine.
● In the case of extended non-operational periods, the fan should be in operation until the
machine has approximately reached the temperature of the coolant, see S2 duty type in
DIN EN 60034‑1.
● Use a suitable circuit to ensure that the external fan is appropriately operated.
NOTICE
EC fan control via an input signal
The fan motor can overheat if the external EC fan is operated at low fan speeds as a result
of the setpoint signal it receives.
● Monitor the motor using the integrated temperature sensors.
● Integrate the temperature monitoring into the interlocking circuit.
4.9
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.
Preparations for use
4.7 Thermal motor protection
SIMOTICS M-1PH8 1PH818., 1PH822., 1PH828.
34
Operating Instructions 10/2017
Содержание SIMOTICS M-1PH818
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Страница 66: ...Mounting 5 5 Refitting the external fan SIMOTICS M 1PH8 1PH818 1PH822 1PH828 66 Operating Instructions 10 2017 ...
Страница 104: ...Operation 8 10 Faults SIMOTICS M 1PH8 1PH818 1PH822 1PH828 104 Operating Instructions 10 2017 ...
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