Product Description:

The VAC-YMM55-45R-112 motor belongs to the VAC Servo Motors series produced by Okuma. Designed as a rotary drive component, it provides controlled mechanical energy for automated machinery in production lines. By integrating with the corresponding VAC drive packages, the unit converts electrical input into rotational motion that can be monitored, tuned, and synchronized with other axes in a manufacturing process. In multi-axis equipment, it supports coordinated starts, stops, and speed changes so linked mechanisms remain aligned throughout each cycle. Its configuration code matches electrical pairing parameters and switch maps that must be set correctly to maintain command accuracy and thermal balance.

In a LAWS cabinet layout, the motor is wired to the D37A/1105 drive unit, while LR35AW installations require the higher-rated D45A/1109 controller. Both drives regulate current vectors so rotor velocity can reach 3500 rpm without exceeding insulation or bearing limits. The shaft rating of 55/45 kW indicates two continuous power levels: the first value applies when the motor operates from a high-capacity inverter, and the second applies when it runs from a standard supply. This distinction helps match the motor to cabinet layouts that use different inverter capacities without changing the base motor model. Encoder tables and alarm masks are preloaded, so setup only requires confirmation of the dip-switch schedule that selects the correct feedback resolution and inertia table.

For a LAWS system, SW3 and SW4 are arranged in the sequence 1,2,4,5. In LR35AW mode, those switches change to 3,4,5, and SW5 shifts to 2,3 to match the alternate current limit and deceleration curve. Incorrect switch positions can cause the controller to call the wrong current limit or response table for the connected motor. Once these settings are verified, the controller recognizes the motor as VAC type 2 and enables control functions for phase advance, overspeed shutdown, and regenerative braking.