MOTOR.IMTR

Description

The rotor time constant is calculated as the ratio between rotor magnetizing inductance Lm and rotor resistance Rr from the following equivalent circuit of an induction machine.

Alternatively, the rotor time constant can be estimated from the rated current, magnetizing current (MOTOR.IMID) and rated slip frequency as follows:

where Is,rms is the rated current, Id,rms is the rated magnetizing current, and ωslip is the rated slip frequency in rad/s.


  • τ is in seconds for the above formulas. It needs to converted to ms for the MOTOR.IMTR setting:
    MOTOR.IMTR(ms) = τ*1000

General Information

Type

R/W

Units

Ms

Range

1 to 16,000

Default Value

100

Data Type

Integer

Start Version

M_01-08-00-000

FieldbusClosedA Fieldbus is an industrial network system for real-time distributed control (e.g. CAN or Profibus). It is a way of connecting instruments in a plant design

Index/Subindex

Object Start Version

EtherCATClosed***EtherCAT is an open, high-performance Ethernet-based fieldbus system. The development goal of EtherCAT was to apply Ethernet to automation applications which require short data update times (also called cycle times) with low communication jitter (for synchronization purposes) and low hardware costs COE and CANopen

/0

M_01-08-00-000

Related Topics

Motor View