Figure 4-28 Feedback Cable Connections; Table 4-14 Second Environment Emission Compliance (Size 0); Table 4-15 Second Environment Emission Compliance (Size 1 To 6) - Emerson unidrive sp User Manual

Safety Product Mechanical
Information Information Installation

Figure 4-28 Feedback cable connections

Cable
shield
Ground clamp
on shield
Cable
shield
To ensure suppression of radio frequency emission,
observe the following:
• Use a cable with an overall shield
• Clamp the overall shield to grounded metallic surfaces at both the
encoder and the drive, as illustrated in Figure 4-28
4.11.4 Compliance with EN 61800-3:2004 (standard
for Power Drive Systems)
Meeting the requirements of this standard depends on the environment
that the drive is intended to operate in, as follows:
Operation in the first environment
Observe the guidelines given in section 4.11.5 Compliance with generic
emission standards on page 87. An external EMC filter will always be
required.
This is a product of the restricted distribution class according
to IEC 61800-3
In a residential environment this product may cause radio
interference in which case the user may be required to take
CAUTION
adequate measures.
Operation in the second environment
In all cases a shielded motor cable must be used, and an EMC filter is
required for all Unidrive SPs with a rated input current of less than 100A.
The drive contains an in-built filter for basic emission control. In some
cases feeding the motor cables (U, V and W) once through a ferrite ring
can maintain compliance for longer cable lengths. The requirements of
operating in the second environment are met, depending on the motor
cable length for 3kHz switching frequency as stated in Table 4-14 and
Table 4-15.
86
Electrical Getting Basic
installation Started parameters
Connection
at drive
Shield
connection
to 0V
Twisted
pair
shield
Cable
Twisted
pair
shield
Shield
connection
to 0V
Connection
at motor
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Optimization
the motor operation

Table 4-14 Second environment emission compliance (size 0)

Drive
Filter
size
0 In-built

Table 4-15 Second environment emission compliance (size 1 to 6)

Drive
Filter
size
In-built
1
In-built and
ferrite ring
In-built
2
In-built and
ferrite ring
3 In-built
4 In-built
5 In-built
6 In-built
Key:
Restricted: EN 61800-3:2004 second environment, restricted distribution
(Additional measures may be required to prevent
interference)
Unrestricted: EN 61800-3:2004 second environment, unrestricted
distribution
For longer motor cables, an external filter is required. Where a filter is
required, follow the guidelines in section 4.11.5 Compliance with generic
emission standards .
Where a filter is not required, follow the guidelines given in section
4.11.3 General requirements for EMC on page 84.
The second environment typically includes an industrial low-
voltage power supply network which does not supply
buildings used for residential purposes. Operating the drive in
this environment without an external EMC filter may cause
CAUTION interference to nearby electronic equipment whose sensitivity
has not been appreciated. The user must take remedial
measures if this situation arises. If the consequences of
unexpected disturbances are severe, it is recommended that
the guidelines in section 4.11.5 Compliance with generic
emission standards be adhered to.
Refer to section 12.1.24 Electromagnetic compatibility (EMC) on
page 277 for further information on compliance with EMC standards and
definitions of environments.
Detailed instructions and EMC information are given in the EMC Data
Sheet which is available from the supplier of the drive.
Onboard Advanced Technical
Diagnostics
PLC parameters Data
Motor cable length (m)
Voltage
0 to 12 12 to 14
200 Unrestricted
400 Unrestricted
Motor cable length (m)
Voltage
0 to 4 4 to 10
Any Unrestricted
Any Unrestricted
Any Restricted
Any Unrestricted
Any Restricted
Any Restricted
200 & 400 Unrestricted
690 Restricted
Any Unrestricted
Unidrive SP User Guide
UL Listing
Information
>14
Restricted
Restricted
10 to 100
Restricted
Restricted
Restricted
Issue Number: 13