Battery backup box enables absolute encoder functionality
SureServo2 systems support Safe Torque Off (STO). STO allows stopping all torque to the motor and eliminates the need for a large external contactor to disconnect the power circuit.
These accessories are required for interface to the on-board drive I/O (via the CN1 connector).
The SureServo2 motors have keyed shafts that are designed for use with keyed couplings or clamp-on or compression style couplings. Couplings using set screws should NOT be used with SureServo2 motors as they are likely to come loose or damage the motor shaft. "Servo grade" clamp-on or compression style couplings are usually the best choice when you consider the stiffness, torque rating, and inertia.
Higher stiffness (lb-in/radian) is needed for better response but there is a trade-off between the stiffness and the added inertia of the coupling. When sizing a coupling, the best practice is to use a safety factor of 1.3 to 1.5 over the SureServo2 peak torque requirement of your application.Shop for Drive Couplings
Common mechanical transmissions include leadscrews, rack & pinion mechanisms, conveyors, gears, and timing belts. The use of leadscrew, rack & pinion, or conveyor are common ways to translate the rotary motion of the servo motor into linear motion of the load.
1. Reduction of Reflected Load Inertia
As a general rule, it is beneficial to keep the reflected load inertia as low as possible while using the full range of servo speed. SureServo® systems can go up to 5,000 rpm for the low inertia motors and up to 3,000 rpm for the medium inertia motors.
However, when investigating the effect of different speed reduction ratios DO NOT forget to include the added inertia of couplings, gearbox, or timing belt pulleys. These added inertias can be significant and can totally undo any inertia reduction due to the speed reduction.
2. Low Speed & High Torque Applications
If the application requires low speed and high torque, then it is common to introduce a speed reducer so that the servo system can operate over more of the available speed range. This could also have the added benefit of reducing the servo motor torque requirement which could allow you to use a smaller and lower cost servo system.
Additional benefits are also possible with reduction in reflected inertia, increased number of motor encoder counts at the load, and increased ability to reject load disturbances due to mechanical advantage of the speed reducer.
3. Space Limitations and Motor Orientation
Reducers can allow the use of a smaller motor or allow the motor to be repositioned. For example, some reducers would allow for in-line, right angle, or parallel mounting of the motor.
Looking for a precision gear reducer for a SureServo System?
Check out our SureGear® planetary gearboxes
The online planetary selector is here.
The SureGear PG series of high-precision servo gear reducers are an excellent choice for applications that require good accuracy and reliability at an exceptional value. This in-line planetary gear reducer has a thread-in mounting style, along with a level of precision and torque capacity that is best in its class.
Offered in a concentric shaft design with a maximum five arc-min backlash rating, the SureGear PG series is an accurate, high performance, and cost-effective solution for any application.
The machining quality of the SureGear PG-series helical planetary gears provides a very quiet and more efficient reducer than other competitive products that are similarly priced.
The SureGear PG series easily mates to SureServo motors.
Everything you need to mount your SureServo motor is included! It is the perfect solution for applications such as gantries, injection-molding machines, pick-and-place automation, and linear slides.
Planetary Gearbox Features:
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