Connecting Converters - Siemens SIMOTICS SD Operating Instructions Manual

Electrical connection

6.7 Connecting converters

6.7 Connecting converters
NOTICE
Excessively high supply voltage
Material damage can occur if the supply voltage is too high for the insulation system.
The standard insulation system is designed so that converter operation is possible for line
voltages up to U
values are peak values):
Û
conductor-conductor
NOTICE
Missing shielding
• Machines must always be connected to converters using shielded machine feeder
• The most effective method of shielding is to conductively connect
• Please observe the section containing instructions on ensuring electromagnetic
See the list of additional operating instructions: Further documents (Page 116)
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 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 operated from a converter 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
64
≤ 500 V. Maintain the following limit values in all operating states (voltage
N
≤ 1500 V, Û
cables.
the cable to the metal terminal box of the machine (with a metal screw connections)
through a large surface area.
compatibility (EMC).
WARNING
≤ 1100 V, voltage rise times of ts > 0.1 µs.
conductor-ground
Operating Instructions, 05/2014, 5 610 00000 02 000
Low-voltage motors