Siemens SIMOTICS M 1PH8 Configuration Manual page 177

• Zone 2 (option M03):
– Marking: II 3 G Ex nA IIB T3 Gc -15 °C ≤ Ta ≤ +40 °C
– Device group II, category 3G, temperature class T3
– EN 60079-15: 2010 type of protection "nA" (no sparking)
– Use in ambient temperatures -15 °C up to +40 °C at installation altitudes up to 1000 m
– Motors with forced ventilation comply with the requirements for a low risk class with
– Motors, Category 3G, are intended for use in hazardous Zone 2. In hazardous Zone 2, the
– According to standard EN 60079-14, the ignition temperature of the potentially explosive
• Zone 22 (option M39):
– Marking: II 3D Ex tc IIIB T160 °C Dc IP55 -15 °C ≤ Ta ≤ +40 °C
– Device group II, category 3D
– Protection afforded by the enclosure tc, degree of protection IP55
– EN 60079-31: 2014 Protection afforded by the enclosure
– Maximum surface temperature 160 °C (according to EN 60079-0: 2012 general
– Use in ambient temperatures -15 °C up to +40 °C at installation altitudes up to 1000 m
– Motors with forced ventilation comply with the requirements for a low risk class with
– Motors, Category 3D, are intended for use in hazardous Zone 22 (non-conductive dust).
– According to standard EN 60079-14, the ignition temperature of a dust cloud must be
• Evaluate the temperature sensor embedded in the motor winding.
• Set the tripping temperature of the sensor to 135 °C.
• Safely and reliably shut down explosion protected separately driven fans when an overload
condition occurs. PTC sensors are integrated as standard for overload protection, which must
be evaluated according to EN 60079-14. Alternatively, a suitable motor circuit breaker can be
used for overload protection.
• The explosion-protected, forced ventilated and water-cooled SIMOTICS M-1PH8 motors have
degree of protection IP55.
1PH8 SIMOTICS M main motors
Configuration Manual, 12/2022, A5E51895839A
reference to shock resistance tests carried out at the fan housing.
occurrence of an explosive atmosphere is improbable; however, if it does occur in normal
operation, then only very infrequently and only very briefly. A potentially explosive
atmosphere can comprise, for example, of air and flammable gases, vapors or mist.
gas atmosphere must be higher than 200 °C (temperature class T3).
requirements)
reference to shock resistance tests carried out at the fan housing.
In hazardous Zone 22, the occurrence of an explosive atmosphere is improbable;
however, if it does occur in normal operation, then only very infrequently and only very
briefly. The potentially explosive atmosphere comprises a mixture of dust and air.
50 % higher than the maximum surface temperature of the equipment being used. In this
case, the ignition temperature of a dust cloud must be > 240 °C. The ignition temperature
of a layer of dust with a maximum thickness of 5 mm must be 75 Kelvin higher than the
maximum surface temperature of the motor. In this case, the ignition temperature of a
dust cloud must be > 235 °C.
Motor components and options
5.2 Options
175