Copley Controls Xenus Plus XP2 Series Manual page 32

Xenus
groundIng & shIeldIng for ce
Grounding and shielding are the means of
controlling the emission of radio frequency
energy from the drive so that it does not
interfere with other electronic equipment.
The use of shielded cables to connect the
drive to motors and feedback devices is a
way of extending the chassis of the drive
out to these devices so that the conductors
carrying noise generated by the drive are
completely enclosed by a conductive shield.
The process begins at the mains connector
of the drive, J1. The ground terminal here
has a circle around it indicating that this is
the safety or "bonding" ground connection.
This should be connected with wire that is
the same gauge as that used for the mains.
in the case of a short-circuit in the drive
the function of this ground connection is to
carry the fault current to earth ground until
the safety device (fuse or circuit breakers)
disconnects the drive from the mains. This
connection ensures that the heatplate of
keep the chassis grounding
connections short for best
shielding performance
Copley Controls, 20 Dan Road, Canton, MA 02021, USA
Tech Support: E-mail: sales@copleycontrols.com, Web: http://www.copleycontrols.com
PLUS
2-Axis CANopen
the drive remains at earth potential and
eliminates a shock hazard that could occur
of the chassis were allowed to float to the
potential of the mains.
While this connection keeps the heatplate
at earth potential the high frequency noise
generated by switching circuits in the drive
can radiate from the wire used for the safety
ground connection. In order to keep the
path between the heatplate and earth as
short as possible it's also recommended to
mount the drive to the equipment panel. An
unplated tab on the heatplate is provided
for this and will ground the heatplate
directly to the equipment frame, further
reducing emissions. This also provides
a connection for a second protective
earthing conductor to address the touch
current requirements of IEC 61800-5-1.
Further information on this topic can
be found in the Xenus Plus User Guide.
CONTROLLER
CONTROLLER
24 V
POWER
SUPPLY
SAFE
TORQUE
OFF
Uplated tab for
heatplate
ground
notes:
1) Shielded cables required for CE are shown in the diagram above.
2) line filter required for CE
3) Ferrite core (Magnetics Inc, ZW43615-TC) required for shielded cable to regen
resi r which must be in shielded enclosure.
sto
The heatplate also connects directly to
the frame ground terminals on the motor,
feedback, and regen connectors. Note that
the ground symbols for these do not have
a circle around them which indicates that
these are for shielding and not not for
safety grounding. Motors and their feedback
devices (which are typically in the motor
case) should be grounded by mounting to
equipment that is grounded as a safety
ground. By connecting the shields for these
devices at the drive and at the device, the
connection is continuous and provides a
return path for radio-frequency energy to
the drive.
J10
J9
J11
J3
J4
J12
XENUS
Plus
2-Axis
J1
J5
J6 J2
Tel: 781-828-8090
XP2
Rev 01
FEEDBACK
MOTOR
LINE
MAINS
FILTER
EXTERNAL
REGEN
RESISTOR
3 TURNS
AROUND
TOROID
INDUCTOR
Fax: 781-828-6547
Page 32 of 34
RoHS