Synchronization Control System

Synchronization using Servo Motors with Absolute Encoders

Synchronization using Motor Starters Diagram

Synchronization Using Variable Frequency Drives (VFD)

Synchronization Control Systems provide an electrical solution to synchronizing actuators where mechanical shafting and coupling cannot be achieved. It is ideal for systems using multiple electric motors, and are designed to hold a tolerance that supports your application needs.

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Features and Benefits

Enhanced Safety
Mechanically interlocked, short circuit protected, main disconnect switch, prevent conflicting actions. Such as extending and retracting an actuator simultaneously, eliminating potential damage to the actuator and associated equipment.
Optional Enclosure (application specific)

NEMA Type 4 Enclosures
Robust Protection: Offers excellent protection against water, dust, and windblown dust, suitable for both indoor and outdoor use.

NEMA Type 12 Enclosures
Dust and Drip Protection: Designed to prevent ingress of dust, falling dirt, lint, fibers, flyings, and dripping non-corrosive liquids.

NEMA Type 4X Enclosures
Enhanced Corrosion Resistance: Offers superior protection against corrosive substances, including saltwater, chemicals, and industrial pollutants, thanks to materials like stainless steel or special coatings.

Explosion-Proof Enclosures
Hazardous Area Safety: Designed to prevent explosions from escaping the enclosure and spreading to the surrounding environment in hazardous locations.
Enclosure Door Mounted
Illuminated or non-illuminated, emergency stop (E-Stop) labeled terminal strip, for field installed devices
Overload
Adjustable motor overload on each motor (for motor starter applications)
Short Circuit Protection
For all motor starters, VFDs, and servo drives
Two Channel Safety Relay
For VFD and servo applications.

Specifications

Synchronization Controls Comparison Chart

Control Type	Ease of Installation	Accuracy	Tolerance	System Flexibility	Longevity	Overall System Performance	Cost
Motor Starter	★ ★	★	★	★	★	★	$
VFDs	★	★★	★★	★★	★★★	★★	$$
Servo Motors	★★★	★★★	★★★	★★★	★★	★★★	$$$
★= Good ★★=Better ★★★=Best

Standard Synchronization Control Methods

Method 1 - Synchronization Using Motor Starters

Encoder 1 and 2 communicate the position of both jack 1 and jack 2 to the controller.
The controller turns motor starter 1 and 2 on or off depending on the position of jack 1 and 2.

Motor starter 1 and 2 apply power to jack motors 1 and 2 based on encoder feedback to keep the system synchronized.

Method 2 - Synchronization Using Variable Frequency Drives (VFD)

	Encoder 1 and 2 communication the position of both jack 1 and 2 to the controller. The controller commands VFD 1 and 2 to change output frequency to motor 1 and 2 based on each jacks position.		VFD 1 and 2 change output frequency to both motor 1 and 2 based on the encoder feedback to keep the system synchronized.

Method 3 - Synchronization Using Servo Motors With Absolute Encoders

The controller commands servo drive 2 to follow server drive 1.
Servo drive 2 adjusts the output power to servo motor 2 in order to keep jack 2 in sync with jack 1.

Integrated absolute encoders in both servo motors feedback position to the controller.

Documents

Brochures & Catalogs

[Brochure] Duff-Norton Motion Control Solutions

Synchronization Control System