ABB AI830A 3BSE040662R1 Analog input RTD 8 ch

Before setting up the motion control system, the user must determine the desired motor configuration. The DMC-18x2 can control any combination of standard servo motors, sinusoidally commutated brushless motors, and stepper motors. Other types of actuators, such as hydraulics can also be controlled, please consult Galil. The following configuration information is necessary to determine the proper motor configuration: Standard Servo Motor Operation: The DMC-18x2 has been setup by the factory for standard servo motor operation providing an analog command signal of +/- 10V. No hardware or software configuration is required for standard servo motor operation.

Sinusoidal Commutation:

 Sinusoidal commutation is configured through a single software command, BA. This configuration causes the controller to reconfigure the number of available control axes. Each sinusoidally commutated motor requires two DAC's. In standard servo operation, the DMC-18x2 has one DAC per axis. In order to have the additional DAC for sinusoidal commutation, the controller must be designated as having one additional axis for each sinusoidal commutation axis. For example, to control two standard servo axes and one axis of sinusoidal commutation, the controller will require a total of four DAC's and the controller must be a DMC-1842.

Sinusoidal commutation

 is configured with the command, BA. For example, BAX sets the X axis to be sinusoidally commutated. The second DAC for the sinusoidal signal will be the highest available DAC on the controller. For example: Using a DMC-1842, the command BAX will configure the X axis to be the main sinusoidal signal and the 'W' axis to be the second sinusoidal signal. The BA command also reconfigures the controller to indicate that the controller has one less axis of 'standard' control for each axis of sinusoidal commutation. For example, if the command BAX is given to a DMC-1842 controller, the controller will be re-configured to a DMC-1832 controller. By definition, a DMC-1832 controls 3 axes: X, Y and Z. The 'W' axis is no longer available since the output DAC is being used for sinusoidal commutation. Further instruction for sinusoidal commutation connections are discussed in Step 6.

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