Emerson unidrive m, Руководство по установке

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Safety information Introduction Product information
System
configuration
Mechanical
Installation
Electrical
Installation
Technical data UL Information
Unidrive M / Unidrive HS Modular Installation Guide
103
Issue Number: 5
6.9.1 Main AC supply contactor
The recommended AC supply contactor type is AC1.
6.10 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, Pr
00.046 Motor rated current 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.
6.10.1 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
6-16 to Table 6-19.
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 6-16 Maximum motor cable lengths (200 V drives)
Table 6-17 Maximum motor cable lengths (400 V drives)
Table 6-18 Maximum motor cable lengths (575 V drives)
Table 6-19 Maximum motor cable lengths (690 V drives)
• Cable lengths in excess of the specified values may be used only
when special techniques are adopted; refer to the supplier of the
drive.
• The default switching frequency is 3 kHz for open-loop and closed-
loop vector and 6 kHz for servo.
6.10.2 High-capacitance cables
The maximum cable length is reduced from that shown in Table 6-16 to
Table 6-19 if high capacitance motor cables are used.
Most cables have an insulating jacket between the cores and the armor
or shield; these cables have a low capacitance and are recommended.
Cables that do not have an insulating jacket tend to have high
capacitance; if a cable of this type is used, the maximum cable length is
half that quoted in the tables. (Figure 6-18 shows how to identify the two
types.)
Figure 6-18 Cable construction influencing the capacitance
The cable used for Table 6-16 to Table 6-19 is shielded and contains four
cores. Typical capacitance for this type of cable is 130 pF/m (i.e. from
one core to all others and the shield connected together).
Pr 00.046 Motor rated current must be set correctly to avoid
a risk of fire in the event of motor overload.
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
09201760
250 m (820 ft)
187 m
(614 ft)
125 m
(410 ft)
93 m
(305 ft)
62 m
(203 ft)
46 m
(151 ft)
09202190
10202830
250 m (820 ft)
187 m
(614 ft)
125 m
(410 ft)
93 m
(305 ft)
62 m
(203 ft)
46 m
(151 ft)
10203000
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
09402000
250 m (820 ft)
187 m
(614 ft)
125 m
(410 ft 93 m
(305 ft)
62 m
(203 ft)
46 m
(151 ft)
09402240
10402700
250 m (820 ft)
187 m
(614 ft)
125 m
(410 ft 93 m
(305 ft)
62 m
(203 ft)
46 m
(151 ft)
10403200
11403770
250 m (820 ft)
187 m
(614 ft)
125 m
(410 ft 93 m
(305 ft)
11404170
11404640
WARNING WARNING
575 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
09501040
250 m (820 ft)
187 m
(614 ft)
125 m
(410 ft)
93 m
(305 ft)
62 m
(203 ft)
46 m
(151 ft)
09501310
10501500
250 m (820 ft)
187 m
(614 ft)
125 m
(410 ft)
93 m
(305 ft)
62 m
(203 ft)
46 m
(151 ft)
10501780
11502000
250 m (820 ft)
187 m
(614 ft)
11502540
11502850
690 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
09601040
250 m (820 ft)
187 m
(614 ft)
125 m
(410 ft)
93 m
(305 ft)
62 m
(203 ft)
46 m
(151 ft)
09601310
10601500
250 m (820 ft)
187 m
(614 ft)
125 m
(410 ft)
93 m
(305 ft)
62 m
(203 ft)
46 m
(151 ft)
10601780
11602100
250 m (820 ft)
187 m
(614 ft)
11602380
11602630
Normal capacitance
Shield or armor
separated from the cores
High capacitance
Shield or armor close
to the cores