Indramat CDM1.4-D AC Main Spindle

DIGITAL 16 bit parallel command input.

The CDM Computer Drive Module contains all the logic necessary to receive velocity commands, compare them with actual speed values obtained from the incremental encoder, and convert the result into a current command for the KDA. The CDM also monitors such things as slip and rotor position and incorporates algorithms to compensate for them. Using a microprocessor rather than conventional analog circuitry normally associated with velocity loop systems, the CDM provides very stable, predictable operation without the need for adjustments. The CDM adapts to the various AC SPINDLE motors available by means of software parameters entered at the factory. These software parameters are stored in the programming module, which utilizes EEPROM memory to store the parameters. By using this type of memory, parameters are not lost in a power loss condition. The parameters may be altered in the field to tailor the operation of the AC SPINDLE drive to any application by using the 5 key keypad with the 8 character LCD display. The display outputs English diagnostic messages, motor RPM, motor load and the parameters.