User`s manual

CHAPTER 3.0 Wiring and Installation 3-14
CDS7324 (FORMERLY LSF-0819)
Rev. A INSTALLATION & USER’S MANUAL
3.2.1 CE Items for Mechanical Installation
Additional electromagnetic compatibility (EMC) measures must be installed on
equipment associated with the DS2110 Servo-drive. The following measures must be
implemented:
• All external Regen (Regenerative circuit) resistors used with the DS2110 must
be installed in enclosures which provide a degree of ingress protection against
liquids and objects of at least IP22 and which are accessible to technically
qualified service or maintenance persons only. Protection against electric shock
must be maintained when installing these resistors.
• Use shielded cable to connect the external regen resistor (if installed) to the
DS2110 power supply. The length of this cable should be as short as possible.
The shields of these cables should be earthed to Chassis Earth using the
optional EMC Bracket kit or the panel earth bar. Alternatively, if the cable is
required to pass through an enclosure panel earthed to Chassis Earth, the shield
may be earthed to the panel by use of a 360 degree metal cable gland.
• Cables supplying external d.c. supply voltages to the DS2110 Series Servo-
drives (for example, the 24 Vd.c. supply) must be as short as possible. The
supply wires should be twisted together or alternatively shielded cable should be
used.
• Cables connecting the D.C. Bus from the DS2110 Power Supply to other
DS2110 Servo-drives must be as short as possible. The supply cables should be
shielded.
• Motor power cables must be shielded with the cable shield securely connected
to Chassis Earth at both ends of the cable. At the DS2110 Servo-drive end of the
cable, the shield should be earthed using the EMC Bracket.
• Motor feedback & signal cables must be shielded with the cable shield securely
connected to Chassis Earth at both ends of the cable.
• Signal cables must be shielded with the cable shield securely connected to make
a good HF earth bond to Chassis Earth at both ends of the cable.
Further details for the correct installation and shielding of cables and conductors are
given in Chapter 2.
Required for
CE-Compliance
CAUTION - Enclosure or cabinet temperature control is critical for performance,
reliability and life of electrical components. Maintaining a uniform temperature (check
for hot spots) within the specified values for the equipment will prevent premature
failure due to temperature stress.