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ACH550-01 User's Manual
Requirements
R5 frame size,
8 kHz fsw,
Category C3,
150 m cable
R6 frame size,
4 kHz fsw,
EMC limits not
applicable,
150 m cable
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 (see
parameter 3501
calculated temperature value (based on a motor thermal model,
see parameters 3005
) or an actual temperature indication given by motor
FREQ
temperature sensors (see
The user can tune the thermal model further by feeding in
additional motor and load data.
The most common temperature sensors are:
•
motor sizes IEC180...225: thermal switch (e.g. Klixon)
•
motor sizes IEC200...250: and larger: PTC or PT100.
Technical data
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Checking and conclusions
Check operational limits for R5 and 8 kHz ->
for a 150 m cable the basic unit is sufficient.
Check EMC limits -> EMC requirements for
Category C3 cannot be met with a 300 m
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 cable the basic unit is sufficient.
EMC limits do not need to be checked as
there are no EMC requirements.
)
, the function either monitors a
SENSOR TYPE
MOT THERM PROT
Group 35: MOTOR TEMP
00577999.xls A
... 3009
BREAK POINT
MEAS)
.
413
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