WL 0623 Rotary Solenoid Actuator for Automation Systems

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WL0623 Rotary Solenoid Application Guide

The rotary solenoid operates through the use of electromagnetic force. This means that the electric current passing through the coil produces a magnetic field, which in turn rotates the armature and hence the shaft of the rotary actuator. The use of magnetic force in the operation of the rotary actuator reduces friction in the moving parts of the device, thereby making the moving parts last longer and thus reduce the frequency of replacement in automated systems.

You can adjust the size and frequency of the electric current to control the rate of rotation of the rotary actuator. Increasing the size of the electric current increases the magnetic field, which in turn increases the rate of rotation of the rotary actuator, making it suitable for tasks that require quick completion, like sorting. Conversely, decreasing the electric current reduces the rate of rotation of the rotary actuator, making it suitable for tasks that require precise control of the rate of rotation, like controlling the motion of the robotic arm in the industrial setting.

Key Features of Rotary Solenoid

A rotary solenoid changes electrical energy into very precise angular motion, usually in fixed amounts like 25°, 45°, or 90°. They respond quickly, are very repeatable, and can be positioned reliably without the need for complicated linkages. They are small and strong, which makes them great for applications with limited space. A rotary solenoid can work in either bi-directional or spring-return modes, which gives designers more options. Because of their simple design, they don’t need much maintenance and last a long time. They also provide consistent torque output and can be changed for voltage, stroke angle, and duty cycle. This makes them perfect for automation, locking systems, and precision control systems.

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Rotary Solenoid For Sorting Machine Application

Characteristics of Rotary Actuators
1.1 Electromagnetic Driving Principle

The driving principle of rotary actuators is based on electromagnetic force. When a current is passed through the electromagnetic coil, a magnetic field is generated between the plunger and the magnetic circuit. The interaction between the armature and the electromagnetic field causes a torque effect that rotates the actuator.

This electromagnetic driving principle causes a reduced amount of friction between the mechanical parts of the actuator compared to a gear system or a mechanical linkage system. The rotary actuator has a long lifespan because of reduced friction between mechanical parts. The actuator can function continuously for a long period without the replacement of mechanical parts that are usually prone to friction.

The rotational speed of the rotary actuator can also be controlled by adjusting the amount of current and the frequency of the current. The amount of current determines the speed of rotation of the actuator. Increasing the amount of current causes the actuator to rotate faster, whereas a decrease in the amount of current causes the actuator to rotate slowly.

1.2 Precise Angle Control Capability

The rotary actuator has a high level of precision because of its capability to control the angle of rotation with high accuracy. The actuator has the capability to rotate to a given angle by adjusting the amount of current passed to the electromagnetic coil.

Advanced rotary actuators are equipped with angle feedback devices that help to monitor the angle of rotation of the actuator. The angle feedback devices use the angle of rotation to transmit a control signal to the control system of the actuator. The control system uses the feedback to control the amount of current passed to the electromagnetic coil to improve the level of precision of the actuator.

1.3 Fast Dynamic Response

Rotary actuators provide fast response due to the instantaneous change in the magnetic field when the coil is energized or de-energized. This allows the armature to start, stop, or change direction in a matter of milliseconds, thereby responding in real-time.

This fast response is particularly advantageous in high-speed production lines, where product position or classification is sensed and immediately actuated by rotary actuators for product sorting, gating, or switching.

The response time is in the order of milliseconds, depending on the coil inductance, the mechanical load, and the drive technology. An optimized coil design and the use of high-efficiency drive technology can further increase the speed of the dynamic response.

1.4 Compact and Integration-Friendly Structure

The rotary solenoid has a compact structure comprising a coil, a magnetic core, an armature, a return spring (if necessary), and a rotating shaft. This compact structure is advantageous in space-constrained systems, where compactness is a key requirement.

The rotary solenoid’s compact structure allows for easy integration into complex automation systems without significantly impacting the size and complexity of the system structure.

1.5 High Reliability and Operational Stability

The rotary actuator is highly reliable and has a long lifespan under suitable operating conditions. The rotary actuator has a simple electromagnetic structure, which reduces the number of moving parts compared to conventional mechanical drive systems.

Reliability can be further improved by incorporating design provisions such as moisture-resistant coil encasement, armature and core materials that resist corrosion, dust-proof sealing, and thermal protection. The above improvements allow rotary actuators to function reliably in harsh industrial environments, environmental monitoring equipment, and medical applications, among others.

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kuhnke rotary solenoid Specification

Brand	Weilong Technology	Model Number	WL 0623
Rated Voltage (V)	DC 12V ,18V or 24V	Rated Power(W)	20–50 W
Work Model	Rotation	Holding Force (N)	0.1—– 0.4 Nm
Rotating Angle	From 25, 45 Degree	Working Duty	10 or 25%
Service Life	500 Thousand Times	Certification	CE,ROHS,ISO9001,
Material	Carbon Steel Housing	Lead Wire Length(mm)	200
Install Style	screw	Tolerance of Dimension	+/- 0.1 MM
Water-proof	None	Insulation Class	B
Hi-Pot Test	AC 600V 50/60Hz 2s	Non-excitation Holding Force	0
Working Temperature	-10°C-100°C	Duty Cycle	1-100%
Thread Depth(mm)	/	Payment Term	TT, or LC At Sight
Sample Order	Yes	Warranty	1 Year
MOQ	1000 PCS	Supply Ability	5000 pcs per Week
Delivery Time	30 Days	Port of Loading	shenzhen

The Datasheet (Typical Specifications)

Voltage: 12V DC or 24V DC.

Power Consumption: 15 – 70Watts.

Holding Torque: 0.15 – 0.4 Nm ≈ 20-55 oz-in.

Rotation Angle: 25°, 45°°.

Response Time: 15-30 ms.

Duty Cycle: Intermittent operation is standard, normally limited to 25%.

Operating Temperature: -10°C to +50°C.

Shaft Type: D-shaped or flat, diameter 4-6mm.

Expected Life: 1-5 million cycles.

Weight: 150-300 grams.

WL0623 Rotary Solenoid Industrial Application

A rotary solenoid features a fast response and precise control over angles, which have made this actuator an essential tool for many industries. A rotary solenoid can control product release in vending machines and package sorting gates. Valve actuation, specifically quarter-turn ball control, is another major use. Its use in sample control and lock releases for medical equipment can be beneficial. Office automation, such as printer control and document diverters, can also use the rotary solenoid. The rotary solenoid applies in security systems, specifically electronic locks, and textile machines, like yarn control and thread cutting, and can be beneficial. Its ability to rotate immediately can be advantageous, especially where “on-off” control is necessary.

WL 0623 Rotary Solenoid Advantage & Disadvantage.

The benefits of a rotary solenoid.

1: Precise control:

It can control both the angle change and the rotation rate. For example, some precise control sorting machines use a rotating actuator to sort items at precise angles and locations. You can control the rotation of the armature precisely by adjusting the intensity and direction of the current. For instance, the machine can place electrical components in the right container if the components are small.

2: Quick response:

The rotary solenoid has the characteristics of quick response. For instance, the machine can see the objects to be sorted by the sensor on a high-speed sorting machine and can start and finish the process in a short time. This is quite useful in the application because the machine can meet the needs of the application.

3: Very reliable:

The structure is relatively simple and is reliable if maintained normally. This means the machine is unlikely to break or wear out as quickly as some other complex mechanical transmission systems, and as a result, the machine has fewer downtime issues.

4: Selection points and working parameters

Torque requirements: When the machine is in use, the intensity of the current is affected by the intensity and size of the objects to be sorted and the rate at which the objects are to be sorted. For instance, if the machine is to sort big and heavy objects, the machine must use a spinning actuator with a high intensity of current to ensure the objects are sorted to the precise location without any problems.

5: Range of rotation angles:

Different sorting tasks might require different rotation angles. Some tasks might require small rotation angles, like when moving goods from one belt to another belt located beside it. Some tasks might require larger rotation angles when moving goods from the main belt to a box located far from the belt. So, the choice of actuator needs to be made based on the range of rotation angles.

6: Operating frequency:

Another factor to be considered when making the choice of rotary solenoid is the frequency of operation of the sorting machine. If the machine is to operate at high frequency, the choice of actuator needs to be made based on the actuator’s ability to operate at high frequency so that it will last and perform well in the sorting machine. For instance, an automated food sorting factory could sort dozens of meals every minute. For this reason, the actuator needs to rotate at high frequency.

How to take care of a rotary solenoid’s daily operation and deal with typical problems

2.1: Regular inspection:

Regularly inspect the coil of the actuator to check whether it is shorted or open by using special devices like a multimeter and so on. Also, check whether the connection of the armature and the shaft of the actuator is loose because this might affect the rotation angle of the actuator.

2.2: Cleaning:

It is essential to ensure that the surface of the actuator is clean to prevent dust and other materials from entering the rotary solenoid and affecting its functionality. Cleaning should be intensified, especially in areas where sorting happens in harsh conditions, such as in mines where dust is prevalent.

2.3 Problems and solutions that happen a lot

Not enough suction: If there is not enough suction, it could be that the rotating actuator does not have enough suction, and this could be caused by a variety of things, such as the coil being old, the voltage being too low, etc. If the coil is old, it needs to be changed. If the voltage is too low, check the system and increase it.

2.4 Inflexible rotation:

If something gets stuck between the armature and core, or if the shaft is rusty, then it will not rotate smoothly. Right now, something is stuck between the armature and core, and the shaft is rusty, so it does not rotate smoothly. This could be fixed by cleaning out the stuck object and greasing the rusty shaft.

FAQs Of WL0623 Rotary Solenoid

Q:Can I change the rotation speed of A rotary solenoid

A: Not really. It’s meant for fast “snap” action. Speed is largely determined by its magnetic construction and spring. You can slow it down considerably with pulse-width modulation (PWM), but it will have much reduced torque and possibly overheat.

Q: What's the difference between continuous and intermittent duty cycles?

A: Intermittent duty of rotary solenoid (such as 25%) means the rotary solenoid should only be energized ON for one quarter of some set period of time (for example, 15 seconds ON and 45 seconds OFF) in order to prevent overheating. Continuous duty types are intended to be continuously energized, but they usually do not provide this much torque.

Q: How do I connect the flyback diode?

A: The flyback diode is connected in parallel with the solenoid coil. The cathode (the end with the band) is connected to the positive terminal and the anode to the negative/ground terminal. This eliminates the voltage spike when the coil is de-energized.

Q: May it be installed in a vertical position?

A: Generally speaking, A rotary solenoid does not matter which way it is installed. Just ensure that the rotary solenoid return spring is strong enough to lift whatever it is attached to when it returns.

Q: My rotary solenoid gets hot in no time. Is this bad?

A: Some heating is normal, but if it gets too hot, it can be bad. Check the following:

1) Are you using it too much?

2) Is the voltage correct?

3) Isn’t the load causing it to stall and/or get stuck?

4) Is the resistance within the coil what it should be (i.e., no wires stuck together inside the coil)?

How to Pick the Right Rotary Solenoid for a Certain Use

To pick the right rotating actuator for a specific use, it is important to examine the mechanical load, the working conditions, the accuracy of control, the power supply conditions, and the cost of ownership. The following engineering factors provide a systematic approach for selecting an actuator.

1. Rotary Solenoid Torque Needs and Load Characteristics

The first step in choosing an actuator is to calculate the required torque and ensure it can handle the load.

To determine the amount of torque needed, particularly for heavy-duty operations like robot arms, it can be done by using the lever principle:

Torque (T) = Lever Arm (L) * Force (F)

Force (F) = Mass (m) * Gravity (g)

The mass of the load, for example, is 10 kg.
The speed of gravity, 9.8 m/s², is the speed at which objects fall.
The lever arm, or the distance from the axis of rotation, is 0.5 m.

To be able to generate the correct amount of torque, it must be able to perform the following calculation: 10 * 9.8 * 0.5, resulting in 49 N·m.

To be able to provide sufficient safety, it must be 1.5 to 2.5 times higher than the calculated result.

2 Matching the Moment of Inertia

In cases where rapid acceleration and deceleration, or precise control, are required, it is crucial that the actuator and the load have the same inertia.

Big load inertia can cause things to be slow to respond, go too far, or cause unstable control.

When there is bad inertia matching, it will cause more stress on the machine and reduce its life expectancy.

In automated tool turrets on a lathe, the mass distribution of tools is a factor in inertia. The choice of an actuator will be dependent on a suitable torque to inertia ratio to ensure rapid and accurate movement.

3 Things to think about in the workplace
Range of Temperature

A high temperature of a rotary solenoid will cause coils to be inefficient and have a higher resistance. High temperatures will also damage the insulation. The coil should be able to withstand high temperatures.

The low temperature of a rotary solenoid will cause mechanical parts to be more fragile. The choice of material should be able to withstand low temperatures and be more resilient.

IP Rating for Ingress Protection

The level of IP to be chosen will depend on how long you will be outside. The following is a guide to IP ratings for different working conditions:

Recommended Protection for the Environment
IP54 or above for areas where there is a lot of dust in industrial areas
Food processing and washing down: IP65 or above
IP67 or above for outside or damp areas

4 Electromagnetic Compatibility (EMC)

If you are working in a place where electromagnetic compatibility is a problem, such as a lab or medical equipment, you will have to think about the following:

Designs for shielded actuators

Filters for EMI

Grounding and shielding of cables

This is to prevent other devices interfering and to meet EMC legislation requirements.

5 Requirements for Accuracy and Control
Angle Positioning Precision

Use actuators with encoders or feedback devices integrated.

Systems can have accuracies of up to ±0.1° or better for precise control.

Verify that the controller has enough resolution for control.

Performance of Speed Control

Systems for high-speed automation must be able to control speed with considerable precision.

Verify the frequency response and how well it works.

Use advanced control techniques, like PID control.

Verify that the maximum RPM is sufficient for the task (e.g., for high-speed sorting robots).

6 Conditions for the Power Supply
Compatible with Voltage and Current

Verify that the voltage of the actuator is compatible with the voltage of the system (e.g., 12V, 24V, or 48V DC).

Verify that the power source can handle peaks in startup current, especially for strong torque requirements.

Power Stability

Voltage fluctuations can cause instability in the motor’s torque and speed.

Use a regulated power supply or DC drivers to ensure a stable voltage.

Necessary for systems that must be continuously powered and for precise control systems.

7. A rotary solenoid Cost and Service Life Considerations

A Balance of Performance and Cost:

Consumer Electronics: Cost-Effectiveness is Primary.

In an industrial automation system, reliability, stability, and a long life cycle are primary.

In determining Total Cost of Ownership (TCO), It is important to consider more than just the initial cost:

How to Calculate the Rotary Solenoid Service Life:

Review the Projected Life Based On:

How Often It Will Be Used

How Large a Load It Will Need to Handle

What Kind of Conditions It Will Be Used In

Example:

Operating in Normal Conditions: It Can Last as Long as 10 Million Cycles

Operating in Harsh Conditions: It May Last as Few as 1 Million Cycles

✅ End

In a rotating actuator, there are several factors to consider, including:

How Much Torque It Can Handle

How Well It Matches the Inertia

How Well It Will Withstand the Environment

How Well It Will Control

How Well It Will Work with Electricity

How Much It Will Cost to Own It in the Long Term

A thorough evaluation is not only important to get a better system, but it will save money in maintenance and increase reliability as well.

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