Product Description:

The VAC-MML 11/7.5R-156-R1 is a servo motor produced by Okuma for the VAC Servo Motors series. It is intended for axis drives that require high peak torque for short operating periods while maintaining continuous operation at a lower thermal load. Within an automation cell, the motor converts electrical energy from a matched VAC amplifier into controlled mechanical rotation for positioning machine axes or driving spindle attachments. Its combination of intermittent and continuous power ratings supports applications with changing load demands, including acceleration, cutting, indexing, and sustained motion.

The intermittent power rating is 11 kW for a 30-minute duty cycle, allowing the motor to provide increased output for a limited period without exceeding its permitted thermal load. Its continuous power rating is 7.5 kW, which is the output available for sustained operation under the required operating conditions. A maximum speed of 6000 rpm provides a broad usable speed range when the motor is paired with suitable gearing and a compatible drive. The SW1 DIP-switch bank is preset to positions 4, 5, 7, and 8, providing the required control configuration for the connected system. The SW2 bank is preset to positions 2 and 3 for its assigned control selections. These fixed switch positions eliminate the need to change the associated settings during installation and help prevent configuration errors.

The SW3 bank is preset to positions 1, 2, 3, and 5, establishing its assigned feedback and protection selections. The SW4 bank uses positions 1, 2, 3, and 5 for the corresponding control parameters. Although the two banks use the same positions, each bank controls a separate group of functions within the motor and drive arrangement. The VAC type setting is registered as type 1, allowing the amplifier to apply the appropriate thermal and current data during startup. These switch and type values are established during production, so user programming is not required for the listed configuration. Electrical matching between the motor and its compatible VAC amplifier supports consistent parameter scaling and diagnostic reporting in a multi-axis installation.