ABB AC 800M, User Manual

Page: 97 / 118

Section 4 Commissioning of PROFIBUS equipment Special conditions regarding the installation of
3BDS009029R5001 B 97
equipotential bonding line must be laid, if possible, in parallel to the data line
(e.g.: 16 mm²). Under no circumstances, the line shield must be used as
compensating line.
• Laying of the PROFIBUS cable in separate grid ducts to energy lines. If bus
cables and energy lines are laid in parallel, a minimum distance of 30 cm is
provided.
The lines provided for the energy line (e.g. for converter actuators) are screened
with a copper braiding. PROFIBUS International (PI) stipulates that the bus
cable has additionally to be laid in a steel tube or in a tight sheet metal channel
in case of extreme interference influencing. The tube or the channel must be
earthed regularly and protected against corrosion (see also PROFIBUS
installation Guideline).
• The grounding of field cable screens for wiring remote I/O housings with the
field devices must be carried out in conformity with the requirements of the
remote I/O suppliers.