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42
Unidrive SP Regen Installation Guide
www.controltechniques.com Issue Number: 2
Table 4-7 575V Regen system maximum cable length
Table 4-8 690V Regen system maximum cable length
If the cable length in the above table is exceeded, additional components
are required. Refer to section 4.6
Exceeding maximum cable length
4.5 Cable types and lengths
Since capacitance in the cabling causes loading, ensure the cable length
does not exceed the values given.
Use 105
°
C (221
°
F) (UL 60/75
°
C temp rise) PVC-insulated cable with
copper conductors having a suitable voltage rating, for the following
power connections:
•
AC supply to external EMC filter (when used)
•
AC supply (or external EMC filter) to Regen drive
•
Regen drive to motoring drive (or busbar arrangement could be
used)
•
Motoring drive to motor
4.6 Exceeding maximum cable length
If the total maximum length specified is exceeded, the increased
circulating currents caused by the extra cable capacitance will have an
effect on the other parts of the system. This will necessitate additional
components to be added to the standard arrangement.
4.6.1 Regen inductor
If the maximum cable length specified is exceeded this will introduce
increased heating of the regen inductor. To overcome the additional
heating forced cooling should be introduced into the system as specified
in the following table.
The forced cooling should be positioned as shown below to provide the
specified airflow directly onto the regen inductor windings.
Figure 4-6 Location of forced cooling
Table 4-9 200V Regen system exceeding maximum cable lengths
Model
575V Nominal AC supply voltage
Maximum permissible cable length
3kHz
4kHz
6kHz
8kHz
12kHz
16kHz
SP3501
200m
(660ft)
150m
(490ft)
100m
(330ft)
75m
(245ft)
SP3502
SP3503
SP3504
SP3505
SP3506
SP3507
Model
690V Nominal AC supply voltage
Maximum permissible cable length
3kHz
4kHz
6kHz
8kHz
12kHz
16kHz
SP4601
200m
(660ft)
185m
(607ft)
125m
(410ft)
90m
(295ft)
SP4602
SP4603
SP4604
SP4605
SP4606
SP5601
SP5602
SP6601
SP6602
SPMA1601
SPMA1602
SPMD1601
SPMD1602
SPMD1603
SPMD1604
Model
200V Nominal AC supply voltage
Maximum permissible cable length with forced cooling
3kHz 4kHz 6kHz 8kHz 12kHz 16kHz
Forced
cooling
required
SP1201
65m (210ft)
50m
(165ft)
37m
(120ft)
Air flow >
160m
3
/ hr
SP1202
100m (330ft)
75m
(245ft)
SP1203
130m (425ft)
100m
(330ft)
SP1204
200m
(660ft)
150m
(490ft)
SP2201
SP2202
SP2203
SP3201
SP3202
SP4201
65m
(210ft)
65m
(210ft)
65m
(210ft)
65m
(210ft)
SP4202
SP4203
SP5201
250m
(820ft)
185m
(607ft)
125m
(410ft)
90m
(295ft)
SP5202
SPMD1201
250m
(820ft)
185m
(607ft)
125m
(410ft)
SPMD1202
SPMD1203
SPMD1204
Summary of Contents for SP1201
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