Our AC servo motor drive units are constructed to suit each project, and are based around ABB’s Microflex e190 drives. These drives provide three-phase motor speed control and support for two encoders, facilitating high accuracy control of connected motors. Typically these drives are paired with a suitable ABB motor with integrated shaft encoder.
Calvitia typically encloses these drives in a suitable cabinet, which may be standalone, wall-mounted or rack-mounted. The cabinet contains all power supplies, power distribution and control cabling, ensuring that external cable requirements are kept to a minimum.
Cabinet options:
- Single or three-phase power: Microflex e190 drives can be powered from either a single-phase or three-phase mains supply. Cabinets are equipped with appropriate RCBOs and mains distribution
- Power filtering: some applications require power filtering to prevent high-frequency harmonics from being transmitted via mains wiring
- Control PSU: Microflex e190 drives can be powered solely from incoming mains, however this means that the EtherCAT control loop will be broken if mains power is removed. A separate control power supply (with optional battery backup) ensures that other drives on the bus will continue to function
- Brake resistor: most applications require some form of braking resistor to slow motor rotation. Excess energy is dissipated as heat
- Brake relay: a brake relay is required if the motor is equipped with an electromechanical brake. The drive is configured to automatically release the brake when appropriate
- Brake override: the cabinet can be equipped with front panel buttons to facilitate a manual brake override. This allows a brake to be manually released if there is a control system failure
- Brake override battery backup: allows a brake to be released even in the event of a total loss of mains power
- Pickle connection: allows an external pickle to control the motor for positioning and diagnostic purposes
- Motor connectors: motors and encoders can be directly wired inside the cabinet, or alternatively wired to external connectors
- External EtherCAT connectors: EtherCAT connections are looped through each drive within the cabinet, and terminated on two Neutrik etherCON TOP panel connectors
- Drive configuration/Mint API network: Microflex e190 drives have a separate Ethernet network for configuration and Mint API access. If this is required, a small network switch will be installed inside the cabinet, connecting together all Microflex drives, and terminating on a Neutrik etherCON TOP panel connector