Bosch PIN8 N1 Anleitung zur Fehlerbehebung PDF herunterladen (Seite 282)

100

101

6-70 Drive Control MPH-02, MPB-02, MPD-02

DOK-INDRV*-MP*-02VRS**-FK01-EN-P

factortypecooling

Sfactortypecooling

Last

)40350(

)01110(15,1

1ln

)40340(1

)01110()40370(

1ln

−−

∗

























−−∗∗

−−=

−−∗

























−−∗−−

−−=

: max. duration after which the motor temperature model reduces

to the max. KB current

: max. duration after which the motor temperature model reduces

to the max. continuous current

Last1

: assumed load current (> max. KB current)

Last2

: assumed load current

(max. continuous current < I

Last2

< max. KB current)

S-0-0111: motor current at standstill

P-0-4034: thermal time constant of winding

P-0-4035: thermal time constant of motor

P-0-4037: thermal short-time overload of winding

c. type factor: depending on the cooling type and the resulting setting of

P-0-0640, Cooling type (see also Parameter Description):

1.0…for standard cooling (2AD, ADF, MAD, MAF, MBT, MBS,

LSF, MLF, non-ventilated MHD, MSK, MKD, MKE)

1.5…for ventilation (only MHD, MSK, MKD, MKE)

1.9…for liquid cooling (only MHD, MSK, MKD, MKE)

Fig. 6-48: Calculating the duration for the effective peak current (see above)

The duration t

depends on:

• the motor-controller combination

• the thermal preloading of the drive

• the load cycle

Note: The physical data of motor-controller combinations can be

retrieved via the selection list program "DriveSelect" (Intranet).

Notes on Commissioning

The user cannot parameterize the current limitation because the limit

values are resulting from the amplifier and motor data taken as a basis or

the application-specific load cycle.

Bipolar torque/force limits are generally determined to protect the

mechanical system because this allows defining the allowed stress of the

mechanical components (e.g. gear, coupling). The limit values to be

entered therefore depend on the mechanical axis system.

In certain cases of application, however, the process can require realizing

a variable torque limit. This can be done via S-0-0092, Bipolar

torque/force limit value, because this parameter can be cyclically

transmitted via the bus or assigned to an analog input.

Note: Parameter P-0-0109, Torque/force peak limit is used to

determine the absolute limit and therefore always has to be

defined by means of the mechanical limits.

Current Limitation

Unipolar Torque Limitation

Bipolar Torque Limitation

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