ABB RCNA-01 Manuel d'utilisateur télécharger pdf (Page 411)

100

101

Technical data 407

ACH550-01 User's Manual

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 SENSOR TYPE), the function either monitors a

calculated temperature value (based on a motor thermal model,

see parameters 3005 MOT THERM PROT … 3009 BREAK POINT

FREQ) or an actual temperature indication given by motor

temperature sensors (see Group 35: MOTOR TEMP MEAS).

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.

R5 frame size,

8kHz fsw,

Category C3,

150 m cable

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.

R6 frame size,

4kHz fsw,

EMC limits not

applicable,

150 m cable

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.

00577999.xls A

Requirements Checking and conclusions

1 2 ... 406 407 408 409 410 411 412 413 414 415 416 ... 473 474

Commentaires sur ces manuels

Pas de commentaire

ABB RCNA-01 Manuel d'utilisateur Page 411

Commentaires sur ces manuels

Produits connexes et manuels pour Mesure, test et contrôle ABB RCNA-01