HEIDENHAIN iTNC 530 HSCI - 3.1 General Information; Degrees of Protection; Electromagnetic Compatibility; Likely Sources of Interference

182 HEIDENHAIN Technical Manual iTNC 530 HSCI
3.1.2 Degrees of protection
The following components fulfill the requirements for IP54 (dust and splash-
proof protection).
 Visual display unit (front, when properly installed)
 Keyboard unit (front, when properly installed)
 Machine operating panel (front, when properly installed)
 Handwheel (built-in or connected, depending on the type)
All electric and electronic control components must be installed in an
environment (e.g. electrical cabinet, housing) that fulfills the requirements of
protection class IP54 (dust and splash-proof protection) in order to fulfill the
requirements of contamination level 2.
3.1.3 Electromagnetic compatibility
This unit fulfills the requirements for EN 50370-01 and is intended for
operation in industrially zoned areas.
Protect your equipment from interference by observing the following rules and
recommendations.
Likely sources of
interference
Interference is mainly produced by capacitive and inductive coupling from
electrical conductors or from device inputs/outputs, such as:
 Strong magnetic fields from transformers or electric motors
 Relays, contactors and solenoid valves
 High-frequency equipment, pulse equipment and stray magnetic fields from
switch-mode power supplies
 Power lines and leads to the above equipment
Protective
measures
 Keep a minimum distance of 20 cm from the control and its leads to
interfering equipment.
 Keep a minimum distance of 10 cm from the control and its leads to cables
that carry interference signals. For cables in metallic ducting, adequate
decoupling can be achieved by using a grounded separation shield.
 Shielding according to EN 50 178.
 Use equipotential bonding conductors with a cross section of 6 mm
2
 Use only genuine HEIDENHAIN cables, connectors and couplings
Danger
The interfaces for the PLC inputs/outputs, machine operating panel and PL
connection comply with the requirements for basic insulation in accordance
with IEC 742 EN 50 178.
Only units that comply with the requirements of IEC 742 EN 50 178 for basic
insulation may be connected, otherwise damage to persons or property may be
caused. The maximum dc voltage mean value of the PLC inputs is 31 V.
Note
All components of the OEM operating panel must also comply with protection
class IP54, just like the HEIDENHAIN operating panel components.