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28 Unidrive SP Regen Installation Guide
www.controltechniques.com Issue Number: 2
Table 3-23 690V (690V ± 10%) SFF Capacitors
3.10.3 Varistors
AC line voltage transients can typically be caused by the switching of large items of plant or by lightning strikes on another part of the supply system.
If these transients are not suppressed they can cause damage to the insulation of the regen input inductors, or to the Regen drive electronics.
The following varistors should therefore be fitted as shown in section 4.2 Power connections .
Table 3-24 Varistor data
3.10.4 EMC filters
In order to provide customers with a degree of flexibility, external EMC
filters have been sourced from two manufacturers, Schaffner and Epcos,
as detailed in both the Unidrive SP, and SPM User Guides.
For currents exceeding 300A up to 2500A, suitable filters are also
available from both Epcos and Schaffner as detailed.
• Epcos B84143-B250-5xx (range up to 2500A)
• Schaffner FN3359-300-99 (range up to 2400A)
These filters may not give strict conformity with EN6000-6-4 but in
conjunction with EMC installation guidelines they will reduce emissions
to sufficiently low levels to minimise the risk of disturbance.
Figure 3-12 Removal of internal EMC filter (size 1 to 3)
Loosen / remove screws as shown (1) and (2).
Remove filter (3), and ensure the screws are replaced and re-tightened (4).
Drive
Part number uF Arms
Heavy Duty Normal Duty
SP4601 SP4601
1668-7833 8.3 4.3
SP4602 SP4602
SP4603 SP4603
SP4604 SP4604
SP4605 SP4605
SP4606 SP4606
SP5601
SP5602 SP5601
1668-8163 16.6 8.6
SP6601 SP5602
SP6602 SP6601
SPMA1601 SPMA1601
SPMA1602 SPMD1601
SPMD1601
SPMD1602
SP6602
2 x 1668-8163 2 x 16.6 2 x 8.6
SPMA1602
SPMD1602
SPMD1603 SPMD1603
SPMD1604 SPMD1604
Drive rating
Varistor
voltage rating
V
RMS
Energy
rating
J
Quantity
per
system
Configuration CT part number
200V
(200V to 240V±10%)
550 620 3 Line to line 2482-3291
680 760 3 Line to ground 2482-3211
400V
(380V to 480V±10%)
550 620 3 Line to line 2482-3291
680 760 3 Line to ground 2482-3211
575V
(500V to 575V±10%)
680 760 3 Line to line 2482-3211
1000 1200 3 Line to ground 2482-3218
690V
(690V±10%)
385 550 6 2 in series line to line 2482-3262
1000 1200 3 Line to ground 2482-3218
When a EMC filter is used, the switching frequency filter
detailed must also be used. Failure to observe this may result
in the EMC filter becoming ineffective and being damaged.
Refer to section 6.4 EMC (Electromagnetic compatibility) on
page 77.
CAUTION
The internal EMC filter must be removed from the drive.
CAUTION
2
1
3
4
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