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Rotalink has launched a brushless version of the Red Drive servo motor driver and controller for precision motion control.

The BLDC10A Brushless Red Drive has a 10A input current rating from a 12-24V DC supply voltage and includes hall sensor inputs for brushless commutation, incremental encoder input and 27 programmable TTL level I/O pins for analogue and digital machine interfacing.

Like its brushed servo counterpart, the modular design concept includes the separately supplied SA1 serial port adapter to program the controller with free Red Drive PC-based graphical software.

For fast and cost-effective OEM product development, the microprocessor chip is available separately, allowing the full board version with its integral servo drive to be used in the design and pre-production phases with the IC version incorporated in the final machine for full production.

This option also enables the customer to choose the optimum power components and I/O requirements for the application.

The BLDC10A Brushless Red Drive can be programmed using a drag-and-drop flowchart programming method, which eliminates the complexity typically associated with many other motion controllers available today.

The Windows program allows scaling of encoder and gearbox resolution into meaningful units at set-up, along with I/O interfacing assignment.

Setup also includes entering catalogue values for motor stall torque and no-load speeds for automatic tuning.

Homing, limits and reset inputs can also be set.

The sequential graphical programming format requires little training or specialist motion control knowledge.

The programmer creates, then drags and drops function blocks in a sequential order with relevant values.

Separate subroutines can be included in the program to call specific functions at any time on input states or as a part of the program flow.

Program functions include incremental and absolute distance moves, acceleration, speeds and wait times in addition to maths and variable calculations.

In all, the Red Drive’s Eeprom memory storage can handle repeatable sequences of more than 100 functions and drives may be linked through I/O for multi-axis set-ups.

A safety input may also be configured to shutdown the drive for emergency measures.

Up to eight of the 27 I/O points may be assigned to 5V analogue inputs with the remaining available for digital I/O interfacing at 5V TTL levels.

All I/O is connected to the BLDC10A via a IDC type connectors using space-saving flat cable assemblies or crimp connectors with standard wiring.

The four-pin encoder connection uses a snap-lock header connector and motor; power and hall sensor connection is via screw terminals.

The SA1 RS232 serial adapter board is interfaced via a 14-way header and only needs to be connected to the drive when programming, which is useful for production environments or security-conscious OEM applications where access needs to be restricted.

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