Siemens SIMOTICS XP Series Operating Instructions Manual page 88

Low-voltage motors

Table of Contents

Electrical connection

6.6 Connecting the converter

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 2014/34/EU ("Explosion Protection

Directive") are always necessary when using PTC thermistor monitoring.

Machines with non-sparking "ec" "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" or "eb" type of protection

Converter operation for these machines must be expressly certified. It is crucial that you

carefully observe the specific 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 with type of protection, dust explosion protection "tb" or dust explosion protection

"tc"

These machines are generally equipped with 3 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. If the temperature

of the cable glands is not stamped on the rating plate, then it is max. 70 °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

Carefully comply with the information and data provided in 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.

Simotics xp Simotics xp 1mb series