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DMM Technology Corp.
DYN4 AC Servo Drive Instruction Manual
REV. ZM7-A10A
CT1
♦ Ball Screw
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Sample Load Type Tunings
Ball screw systems are mechanically very rigid. If high resolution pitch (e.g. 5mm or 10mm)
the default setting could even be used. The servo drive can be easily tuned using Main
Gain, Speed Gain, and Integration Gain. Increase Main Gain, Speed Gain and Integration
Gain relative to load mass until target response achieved. Decrease Integration Gain if load
inertia is big and oscillates when moving or stopping.
♦ Direct Mechanical Drive (Rigid systems, Robots)
Depending on load mass and inertia, increase Main Gain, Speed Gain and Integration Gain
until target response achieved.
Decrease Integration Gain if load inertia is high and system
oscillates
. In speed/torque servo mode, if relative load inertia is very high, high Speed Gain
can increase motor torque noise, then decrease the Torque Filter Constant to attenuate
torque loop noise.
♦ Belt Drive / Pulley
Belt drive or pulley systems are low mechanical rigidity with slower relative response. Main
Gain and Speed Gain should be increased with higher load mass and relative load inertia.
Integration Gain should be decreased to give the position loop more time to react to the low
rigidity belt.
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Auto Tuning
Auto tuning is most often used to automatically set the servo Gain parameters. The DM
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MDRV program includes the Auto Tuning module. Follow the instructions in the module to
allow the program and servo drive to automatically tune the Main Gain, Speed Gain, Integra
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tion Gain and Torque Filter Constant Parameters.
