Unidrive M702 User Guide
63
Issue Number: 3
PVC insulated cable should be used.
Cable sizes are from IEC60364-5-52:2001 table A.52.C with correction
factor for 40°C ambient of 0.87 (from table A52.14) for cable installation
method B2 (multicore cable in conduit).
Installation class (ref: IEC60364-5-52:2001)
B1 - Separate cables in conduit.
B2 - Multicore cable in conduit.
C - Multicore cable in free air.
Cable size may be reduced if a different installation method is used, or if
the ambient temperature is lower.
N
The nominal output cable sizes assume that the motor maximum current
matches that of the drive. Where a motor of reduced rating is used the
cable rating may be chosen to match that of the motor. To ensure that
the motor and cable are protected against overload, the drive must be
programmed with the correct motor rated current.
A fuse or other protection must be included in all live connections to the
AC supply.
Fuse types
The fuse voltage rating must be suitable for the drive supply voltage.
Ground connections
The drive must be connected to the system ground of the AC supply.
The ground wiring must conform to local regulations and codes of
practice.
N
For information on ground cable sizes, refer to Table 4-1
4.8.1 Main AC supply contactor
The recommended AC supply contactor type for size 3 and 6 is AC1.
4.9 Output circuit and motor protection
The output circuit has fast-acting electronic short-circuit protection which
limits the fault current to typically no more than five times the rated
output current, and interrupts the current in approximately 20 µs. No
additional short-circuit protection devices are required.
The drive provides overload protection for the motor and its cable. For
this to be effective,
Rated Current
(
00.046
) must be set to suit the motor.
There is also provision for the use of a motor thermistor to prevent over-
heating of the motor, e.g. due to loss of cooling.
4.9.1 Cable types and lengths
Since capacitance in the motor cable causes loading on the output of the
drive, ensure the cable length does not exceed the values given in Table
4-13, Table 4-14 and Table 4-15.
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 drive
•
Drive to motor
•
Drive to braking resistor
Table 4-13 Maximum motor cable lengths (200 V drives)
Table 4-14 Maximum motor cable lengths (400 V drives)
Rated Current
(
00.046
) must be set correctly to avoid a risk
of fire in the event of motor overload.
NOTE
NOTE
NOTE
NOTE
WARNING
200 V Nominal AC supply voltage
Model
Maximum permissible motor cable length for each of
the following switching frequencies
2
kHz
3
kHz
4
kHz
6
kHz
8
kHz
12
kHz
16
kHz
03200050
65 m (210 ft)
50 m
(165 ft)
37 m
(120 ft)
03200066
100 m (330 ft)
75 m
(245 ft)
03200080
130 m (425 ft)
100 m
(330 ft)
03200106
200 m (660 ft)
150 m
(490 ft)
04200137
200 m (660 ft)
150 m
(490 ft)
100 m
(330 ft)
75 m
(245 ft)
50 m
(165 ft)
37 m
(120 ft)
04200185
05200250
200 m (660 ft)
150 m
(490 ft)
100 m
(330 ft)
75 m
(245 ft)
50 m
(165 ft)
37 m
(120 ft)
06200330
300 m
(984 ft)
200 m
(660 ft)
150 m
(490 ft)
100 m
(330 ft)
75 m
(245 ft)
50 m
(165 ft)
06200440
07200610
250 m (820 ft)
185 m
(607 ft)
125 m
(410 ft)
90 m
(295 ft)
07200750
07200830
08201160
250 m (820 ft)
185 m
(607 ft)
125 m
(410 ft)
90 m
(295 ft)
08201320
400 V Nominal AC supply voltage
Model
Maximum permissible motor cable length for each of
the following switching frequencies
2
kHz
3
kHz
4
kHz
6
kHz
8
kHz
12
kHz
16
kHz
03400025
65 m (210 ft)
50 m
(165 ft)
37 m
(120 ft)
03400031
100 m (330 ft)
75 m
(245 ft)
03400045
130 m (425 ft)
100 m
(330 ft)
03400062
200 m (660 ft)
150 m
(490 ft)
03400078
03400100
04400150
200 m (660 ft)
150 m
(490 ft)
100 m
(330 ft)
75 m
(245 ft)
50 m
(165 ft)
37 m
(120 ft)
04400172
05400270
200 m (660 ft)
150 m
(490 ft)
100 m
(330 ft)
75 m
(245 ft)
50 m
(165 ft)
37 m
(120 ft)
05400300
06400350
300 m
(984 ft)
200 m
(660 ft)
150 m
(490 ft)
100 m
(330 ft)
75 m
(245 ft)
50 m
(165 ft)
06400420
06400470
07400660
250 m (820 ft)
185 m
(607 ft)
125 m
(410 ft)
90 m
(295 ft)
07400770
07401000
08401340
250 m (820 ft)
185 m
(607 ft)
125 m
(410 ft)
90 m
(295 ft)
08401570
Содержание Unidrive M702
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