Emerson PACMotion VFD Series User Manual page 35

General
Compliance with category C1 conducted emissions only is achieved.
1
Supply Cable
A screened (shielded) cable suitable for fixed installation with the relevant mains voltage in use. Braided
2
or twisted type screened cable where the screen covers at least 85% of the cable surface area, designed
with low impedance to HF signals. Installation of a standard cable within a suitable steel or copper tube is
also acceptable.
A cable suitable for fixed installation with relevant mains voltage with a concentric protection wire.
3
Installation of a standard cable within a suitable steel or copper tube is also acceptable – in this case, ensure
that metal tube is adequately grounded.
A cable suitable for fixed installation with relevant mains voltage. A shielded type cable is not necessary.
4
Motor Cable
A screened (shielded) cable suitable for fixed installation with the relevant voltage in use. Braided or
5
twisted type screened cable where the screen covers at least 85% of the cable surface area, designed with
low impedance to HF signals. Installation of a standard cable within a suitable steel or copper tube is also
acceptable - in this case, ensure that metal tube is adequately grounded.
The cable shield should be terminated at the motor end using an EMC type gland allowing connection to the
6
motor body through the largest possible surface area. The shield must also be terminated at the drive end,
as close as practically possible to the drive output terminals. Where drives are mounted in a steel control
panel enclosure, the cable screen may be terminated directly to the control panel backplate using a suitable
EMC clamp or gland fitted as close to the drive as possible. The drive earth terminal must also be connected
directly to this point, using a suitable cable which provides low impedance to high frequency currents. For
IP55 and IP66 drives, connect the motor cable shield to the gland plate or internal ground clamp.
A cable suitable for fixed installation with relevant mains voltage with a concentric protection wire.
7
Installation of a standard cable within a suitable steel or copper tube is also acceptable.
Control Cable
A shielded cable with low impedance shield. Twisted pair cable is recommended for analog signals.
8
Figure 27: Enclosed Drives Recommended Cable Connections
IP55
L1 L2 L3 +DC BR -DC
GFK-3111A
U V W
PACMotion VFD AC Variable Speed Drive User Guide
IP66
For Best-Practice use
360° bonding IP66
(or higher) EMC cable
gland shielded to
drive chassis.
U V W
35