ABB ACQ550-x1-06A6-2 User Manual page 281

ACQ550-U1 User's Manual
Requirements
R3 frame size,
4 kHz fsw,
Category C3,
300 m (980 ft) cable
R5 frame size,
8 kHz fsw,
Category C3,
150 m (490 ft) cable
R6 frame size,
4 kHz fsw,
EMC limits not
applicable,
150 m (490 ft) cable
Motor cable length for 600 V drives
The table below shows the maximum motor cable lengths for 600 V drives with
different switching frequencies. As the 600 V drives are not CE approved, cable
lengths for EMC limits are not given.
Maximum cable length for 600 V drives
Frame
size
R2
R3...R4
R6
2
12 kHz switching frequency is not available.
WARNING! Using a motor cable longer than specified in the table above may cause
permanent damage to the drive.
Motor thermal protection
According to regulations, the motor must be protected against thermal overload and
the current must be switched off when overload is detected. The drive includes a
motor thermal protection function that protects the motor and switches off the current
when necessary. Depending on a drive parameter value (see parameter 3501
SENSOR TYPE
a motor thermal model, see parameters 3005
) or an actual temperature indication given by motor temperature sensors (see
FREQ
Group 35: MOTOR TEMP
feeding in additional motor and load data.
Check operational limits for R3 and 4 kHz -> a 300 m (980 ft) cable
cannot be used even with a du/dt filter. A sine filter must be used and
the voltage drop of the cable must be taken into account in the
installation.
Check EMC limits -> EMC requirements for Category C3 are met
with a 300 m (980 ft) cable.
Check operational limits for R5 and 8 kHz -> for a 150 m (490 ft)
cable the basic unit is sufficient.
Check EMC limits -> EMC requirements for Category C3 cannot be
met with a 300 m (980 ft) cable. The installation configuration is not
possible. An EMC plan is recommended to overcome the situation.
Check operational limits for R6 and 4 kHz -> for a 150 m (490 ft)
cable the basic unit is sufficient.
EMC limits do not need to be checked as there are no EMC
requirements.
Operational limits
1/4 kHz 8/12 kHz
m ft m
100 330 100
200 660 100
2
300 980 150
), the function either monitors a calculated temperature value (based on
MEAS). The user can tune the thermal model further by
Checking and conclusions
ft
330
330
2
490
MOT THERM PROT
281
... 3009
BREAK POINT
Technical data