Vacon optbj, Safety Manual

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vacon • 18 OPTBJ board layout
Local contacts: https://www.danfoss.com/en/contact-us/contacts-list/
4.4 Cuttable jumper to separate control ground from PE
Figure 5.Location of cuttable jumper X15
Normally when the OPTBJ board is installed on the drive, the AC drive's control ground is connected
to PE (Protective Earth, drive's frame) through the OPTBJ board. Without the OPTBJ board, the con-
trol ground is connected to PE through high impedance. In some systems, the control ground may
need to be separated from PE when the OPTBJ board is installed. Do not do this before consulting
the Danfoss support personnel (contact the Danfoss local contacts at http://drives.danfoss.com/
danfoss-drives/local-contacts/). If the jumper is cut, at least 1 mm of wire from X15 needs to be re-
moved to ensure isolation.
CAUTION! Cutting this jumper should be done only when it is required by the sys-
tem. After the jumper is cut, the drive's in24VDC can be used for external
safety devices if fault exclusion in wiring 'Short circuit of any conductor to an
exposed conductive part or earth or to the protective bonding conductor' accord-
ing to EN ISO 13849-2 can be achieved.
11856_00
X15
13006.emf