CMEM Module Configuration

The following figure shows the configuration folder of the module.

Figure 66. CMEM Module Folder Configuration

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The CMEM module provides the following configuration options:

  • Maximum and minimum setpoint value of the torque
  • Speed limitation in control mode T
  • Speed controller parameter
  • Speed controller standstill parameter
  • Speed controller 2 parameter
  • Torque controller parameter
  • Angle controller parameter
  • Field weakening power reduction
  • Step table for PID control
Important Speed and torque controllers assume that a positive change in their respective output values leads to a positive change in the input measured value. This rule has to be applied when integrating this module into the application.

Maximum and Minimum Setpoint Value of the Torque

The maximum and minimum setpoint value of the torque can be set in table CMEM_A group type Initialization of variables.

Speed Limitation in Control Mode T

The variables for the speed limitation in control mode T can be set in table CMEM_A_Speed_Limiting_ Controller group type Initialization of variables.

Operating Frequency

The operating frequency can be configured in group folder CMEM_A_Operating_Frequency_x000Hz in operation table CMEM_A_operating_frequency_x000Hz.

Operating frequency options available: 1,000 Hz, 2,000 Hz, and 4,000 Hz

1,000 Hz Operation

The default configuration is 1,000 Hz and a hook-up to the C2A_1000Hz operation table. The processing order inside the C2A_1000Hz operation table is controlled by variable CMEM_A_priority_CA.

The sequence order is:

  1. Update actual values and set values
  2. CMEM
  3. Inverter interface

All of this should be done in the same operation cycle.

2,000 Hz and 4,000 Hz operation

Since a C2A operation table is not available for 2,000 Hz and 4,000 Hz, operation tables CMEM_A_oper- ating_frequency_2000Hz and CMEM_A_operating_frequency_4000Hz need another hook-up method. The following example can be used analogously for 2,000 Hz operation.

Example: 4,000 Hz Operation

This hook up method requires operation Execute programs in the appropriate base module BFA operation table, e.g., for 4,000 Hz:

  1. Open Operation table BFA_RT.
  2. Add operation type Execute programs to BFA_FGB4000.A.
  3. Add a new row index to ensure a proper processing order. Adaptations to other module/ function configurations might be necessary.
  4. Activate the appropriate group folder CMEM_A_Operating_Frequency_x000Hz containing the desired operating frequency.
  5. Deactivate the other group folders.
  6. Adapt the value of CMEM_A_priority_C2A to set a proper order of sequence with respect to measured value acquisition, set value generation and inverter interface.