Siemens SIMOTICS XP 1LA5 Compact Operating Instructions page 49

WARNING
Machine overheating
Operating explosion-protected machines at the converter without using the
appropriate protective equipment can result in death or severe injury.
Always use PTC thermistor monitoring when operating explosion-protected
machines at the converter. Tripping units according to directive 94/9/EC are always
necessary when using PTC thermistor monitoring.
Machines with non-sparking "nA" type of protection
The operation of the explosion-proof machines on the converters is permitted, when
the specifications for the speed control range and torque characteristic are observed,
and if winding temperature monitoring is ensured via the integrated temperature
sensors in conjunction with a certified tripping unit.
Machines with increased safety "e" type of protection
Converter operation for these machines must be expressly certified. It is essential
that you observe the separate manufacturer's information and instructions. Converter
and protective devices must be marked as belonging together and the permitted
operating data must be defined in the common EC-type examination certificate.
Machines connected to converters for Zone 21 and Zone 22
These machines are generally equipped with three PTC thermistors in accordance
with DIN 44082 with a rated response temperature that depends on the maximum
possible surface temperature. Select the PTC thermistors in accordance with this
standard. The maximum temperature at the cable entries is 120 °C. Use suitable
cables for this temperature. Do not exceed the maximum frequency dependent on
the number of poles, which is stamped on the rating plate.
System, converter - cable - electrical machine
Please observe the information in accordance with EN / IEC 60034-17 and
EN / IEC 60034-25 regarding winding stress. For line supplies with operating
voltages up to 690 V, the maximum value of the voltage peaks at the end of the cable
must not exceed twice the value of the converter's DC-link voltage.
Explosion-protected machines
56100000002002, 01/2016
Electrical connection
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