Servo Drives - Insights

Fast Feedback (Endat, BISS, etc); Improve Tuning algorithm, Fast control bus (e.g.: Ethercat, Synqnet, Sercos 3)

Miniaturization, non contact - low force high speed work - not new but still demanding.

Decentralized Drives, IP65 class of protection, safety (Speed and Torque)

Digital, naturally.

Integrated

Generally, all good that I have used, and other good servo companies have left the scene.

1) Yaskawa 2) Fuji 3) Panasonic 4) Lenze

Kollmorgen, Panasonic, AMK

Packing machine

Rockwell

1) XYZ cartesian robots. 2) Belt drive linear actuators. 3) Ballscrew drive linear actuators. 4) Direct drive rotary turn table. 5) Linear servo.

Point to point motion, Interpolated applications, Pick and Place, Packaging, metal cutting, Assembly, ware housing, grinding,.... many more

Slitter scores, rotary knife, fly sheer, tool machines, flow pack systems, pick n place, replace in Robots, etc

Packing machine, conveyor, machine screw cap bottle, sewing machines...

For Loading and unloading of billets in/from Oil fired furnace.

Siemens, Fanuc, Sanyo, Denki, Yaskawa, Baumuller

Hybrid Plastic extrusion, motion control

CNC machine tools, materials handling

Conveyor. bottling, baggage handling

Printing and cuting machine

Feed axis in cnc machine

Machinery, automotive

Cnc machines drives

Packaging Forming

MACHINE TOOLS

Positioning

Antennas

Nothing out of the ordinary.

Problems can occur with guarding which inadvertently derates the motor, services which do not adequately house or move the cabling, inadequate high voltage segregation in cable ducting. In low cost DC units the builders must recognize servo run away as an ever present danger during commissioning and servicing. Especially on loss of velocity feedback. Observe safe work practice, keep others out of the machine area. When testing without a fully functional PLC or without CNC position protection, think through the consequences before starting, disconnect the load if necessary. When setting an axis up, run a program that adequately reflects the actual machine duty, eg don't continuously cycle a low duty axis. Before commencing movement check that prior tests are complete, eg servo dead-stops are present and working, lubrication is present and working. Always beneficial on a new machine if size and access allow to wind the axis by hand over the full travel to pick up any interference or change in load. If many are working on the project work from a document and review status each morning.

1) Servo overload resulting in vertical axis falling down.

Unfortunately yes, applied in a toy.

Best features - to be intrinsically safe, to work directly from mains voltage, to avoid heating the cabinet unduly, to stay leak proof and noise resistant, to fault without damage to the power stage - all pretty much standard but it keeps the cost of operating CNC down. If anything, cabling and connectors are the critical items in service. Also, minimum setup time before service is a must.

1) Response time. 2) Easy tuning. 3) Easy parameter setting. 4) Able to save & backup parameters via communication port. 5) Able to command servo to move via communication port. 6) Able to read status of servo via communication port. 7) Compact size. 8) Single phase AC voltage input. 9) Able to control servo drives via USB/LAN connection.

Robust control against great load variables, Self-backlash compensation, easy motion control programming

Accurate position control

The main requirement is to understand the duty cycle and the operating conditions throughout the year. Allow enough from the project budget to run the cabling and services in a professional manner. It is generally difficult and labor intensive and, its useful to have people around with prior experience.

First of all: study your mechanical system, and check if your servo choice matches in your case. After, if you are not an expert in servo systems and needs make a application...find an expert.

Look for tomorrow, total solutions, create infrastructure to share information across network / plant automation.

Customers select the correct code, see carefully the characteristics of servo.

1) Suppliers with good technical support.

If in doubt, go one size up. Size the cabinet to accommodate the servo equipment and leave 30% free room if possible on project machines. Watch the motor to load inertia ratio. If its a product then test the prototype long enough to confirm your design. If you are short on experience, speak with service people to find out how others do it and what they have seen.

Never apply a servo system without a power reserve; keep all original cables; avoid compliances and backlash.

When replacing servo should pay attention to the technical characteristics of servo.

Make sure the whole loop can deliver the motion required, not just the servo specs.

1) Inertia selection for rotary applications.