SAFETY PRECAUTIONSPOWER SUPPLYATTENTION: READ THIS INFORMATION BEFORE INSTALLING THE PRODUCT- This product is intended to be installed by Qualified Personnel only.The C-BOX 3X0 is intended to be supplied either by a UL Listed NEC Class 2 powersource, or a UL Listed ITE Limited Power Source (LPS), rated 10-30 V dc, minimum0.5 A.See par. 2.4.1 for correct power supply connections.SAFETY NOTESObserve the general rules for PROFIBUS components when planning the C-BOXinstallation.Please observe the following to avoid risk to personnel and damage to equipmentand to ensure that the C-BOX 3X0 functions correctly:Safety Regulations Observe the guidelines in the VDE 0100 regulations forhandling electrical components,Observe the applicable safety and accident preventionregulations.The C-BOX must only be installed or uninstalled byqualified technical personnel with appropriate electro-technical qualifications.PROFIBUS Standard Observe the guidelines in the PROFIBUS standardEN 50 170.Bus Cable Bus wiring should only take place using special shielded,twisted pair PROFIBUS cable. The high data transferrates can only be guaranteed with the correct cable type.Cable Lengths Refer to the manual for the DP master for information onmaximum cable lengths for PROFIBUS.ix