Emc Filters; Internal Filter; External Filter - Control Techniques UNIDRIVE SP1201 Guía Rápida

Safety Product Mechanical
Information Information Installation
Figure 3-1 Enclosure layout
AC supply
contactor and
fuses or MCB
Ensure minimum clearances
are maintained for the drive
and external EMC filter. Forced
or convection air-flow must not
be restricted by any object or
cabling
The external EMC filter can be
bookcase mounted (next to the
drive) or footprint mounted (with
the drive mounted onto the filter).
External
controller
Signal cables
Plan for all signal cables
to be routed at least
300mm (12in) from the
drive and any power cable
3.3

EMC filters

Internal filter

It is recommended that the internal EMC filter be kept in place unless there is a specific
reason for removing it.
If the drive is part of a regen system or is a Unidrive SP size 3 on an IT supply then the
internal EMC filter must be removed.
The internal EMC filter reduces radio-frequency emission into the mains supply. Where
the motor cable is short, it permits the requirements of EN61800-3 to be met for the
second environment - for further information see the Unidrive SP User Guide on the CD
Rom supplied with the drive. For longer motor cables the filter continues to provide a
useful reduction in emission level, and when used with any length of shielded motor
cable up to the limit for the drive, it is unlikely that nearby industrial equipment will be
disturbed. It is recommended that the filter be used in all applications unless the earth
leakage current of 28mA is unacceptable or the above conditions are true.
Refer to section 10.11 on page 267 for the location of the internal EMC filter.

External filter

Refer to section 10.9 on page 265. For further information refer to the Unidrive SP User
Guide on the CD Rom supplied with the drive.
10
Electrical Getting
Menu 0
Installation Started
Optional braking resistor and overload Locate optional braking
Enclosure
≥100mm
(4in)
A
www.controltechniques.com
Running Advanced
Diagnostics Appendix
the motor parameters
resistor and overload
external to cubicle
(preferably near to or
on top of the cubicle).
A Size 1: 0mm (0in)
Size 2: 30mm (1.181in)
Size 3: 30mm (1.181in)
A
Note
For EMC compliance:
1) When using an external EMC
filter, one filter is required for
each drive
2) Power cabling must be at
least 100mm (4in) from the
≥100mm
drive in all directions
(4in)
3) Ensure direct metal contact
at drive and filter mounting
points (any paint must be
removed)
Unidrive SP Short Form Guide
UL Listing
Information
≥
≥
≥
Issue Number: 1