Alpha WSER50 OD 30/17 Obstacle Detection Motor

The Alpha WSER50 OD 30/17 Obstacle Detection Motor is a specialised 240V radio tubular motor designed primarily for external Zip-style awning systems.

Unlike a conventional motor that simply travels between programmed upper and lower limits, the WSER50 OD can detect abnormal resistance or interrupted movement in both directions.

When travelling down, the motor can recognise when the bottom bar has stopped moving because it has become stuck in the channel or encountered an object.

Rather than continuing to drive against the obstruction, the motor stops, rebounds upwards and then attempts to lower the awning again.

This intelligent obstacle-response system makes the Alpha WSER50 OD particularly suited to external Zip systems where bottom-bar movement through the side channels is critical to correct operation.

Bidirectional Obstacle Detection

The defining feature of the Alpha WSER50 OD 30/17 Obstacle Detection Motor is obstacle detection in both directions of travel.

This allows the motor to respond differently depending on what happens while the awning is opening or closing.

During downward movement, the motor monitors the operation of the awning.

If the bottom bar becomes stuck within the side channel or encounters an object, the motor can recognise that normal movement has stopped.

Instead of continuing to apply force against the obstruction, the motor initiates its protective response.

Automatic Rebound and Retry

When an obstacle is detected during downward movement, the motor rebounds to a higher position.

It then attempts to lower the awning again.

This automatic process can occur up to three times.

If the obstruction remains after three unsuccessful attempts, the motor returns to the rebound position and stops.

This allows the system an opportunity to recover from a temporary obstruction without continuously driving the bottom bar against something preventing normal movement.

Obstacle Versus Wind Response

The WSER50 OD also distinguishes between an obstacle condition and wind interfering with the movement of the awning.

Alpha specifies two different responses.

If the motor determines that an obstacle is preventing downward movement, it returns to the rebound position and stops after the unsuccessful retry sequence.

If it determines that wind is preventing the awning from operating correctly, it returns the awning to its top limit.

This provides an additional protective response for an externally installed Zip system.

Upward Torque-Stop Functionality

Obstacle detection isn’t limited to downward travel.

During upward movement, the motor provides tensioning and torque-stop functionality.

Where the Zip system uses upper physical stoppers, the motor can stop against those stoppers at the upper position when required.

This makes the motor suitable for compatible systems where the physical construction of the awning is used as part of its closing and tensioning operation.

Designed for External Zip Systems

Alpha states that the WSER50 OD 30/17 was designed primarily with Zip-style systems in mind.

Zip awnings rely on the bottom bar and fabric moving correctly through side channels.

An obstruction, misalignment or external condition affecting that movement can therefore create problems that aren’t encountered in a conventional unrestricted roller blind.

The obstacle-detection, rebound and retry functions of the WSER50 OD are specifically useful in this type of application.

30Nm Torque and 17 RPM

The Alpha WSER50 OD 30/17 Obstacle Detection Motor provides:

30Nm rated torque

17 rpm output speed

The motor operates from a 240V mains supply, with nominal consumption of 226W and nominal current of 0.95A.

Its substantial torque and controlled operating speed make it suitable for compatible external Zip systems when correctly matched to the application.

Built-In Radio Receiver

The WSER50 OD incorporates a built-in radio receiver.

This allows the motor to be operated wirelessly using compatible Alpha radio controls without requiring a separate external receiver for normal radio operation.

An external antenna forms part of the motor’s radio-control system.

Electronic Limit Switch

The motor incorporates an electronic limit switch.

This allows its normal stopping positions to be electronically programmed rather than relying on conventional mechanical limit adjustment.

The electronic limit system works alongside the motor’s specialised obstacle-detection and torque-stop functions.

Wireless Limit Setting

Alpha specifies wireless limit setting for the WSER50 OD 30/17.

This allows the electronic stopping positions to be configured using compatible Alpha radio-control equipment.

For an external Zip system where the motor is contained within the headbox or roller assembly, wireless programming provides convenient access to the motor’s setup functions.

Star-Shaped Motor Head

Another important difference with the Alpha WSER50 OD 30/17 is its distinctive star-shaped motor head.

Alpha states that this head design is different from its other motor heads.

The star-shaped configuration is designed to suit many common mounting arrangements used by different manufacturers when producing external awning systems.

This can provide additional installation flexibility when integrating the motor into compatible systems.

Compatible Mounting Brackets

Alpha identifies three compatible mounting brackets for the WSER50 OD:

Alpha A3438 Motor Bracket

Alpha A3439 Motor Bracket

Alpha A3440 Motor Bracket

If you create those bracket products on Frontline later, these should become direct internal links.

They’re specifically confirmed by Alpha for this motor, so they’re strong accessory links.

Key Features

• Designed primarily for external Zip systems
• 30Nm rated torque
• 17 rpm output speed
• 240V wired operation
• 45mm motor diameter
• Bidirectional obstacle detection
• Downward obstacle detection
• Automatic rebound when obstruction detected
• Automatic retry up to three times
• Returns to rebound position after persistent obstacle
• Returns to top limit when wind prevents normal operation
• Upward tensioning/torque-stop functionality
• Can stop against compatible upper stoppers
• Electronic limit switch
• Built-in radio receiver
• Wireless limit setting
• External antenna
• Star-shaped motor head
• IP44 protection
• Remote-control operation

Technical Specifications

• Model: Alpha WSER50 OD 30/17
• Product Code: WSER50OD3017
• Motor Type: Obstacle-detection radio tubular motor
• Primary Application: External Zip systems
• Rated Torque: 30Nm
• Output Speed: 17 rpm
• Nominal Consumption: 226W
• Nominal Voltage: 240V
• Nominal Current: 0.95A
• Running Time: 4 minutes
• Protection Index: IP44
• Motor Diameter: 45mm
• Total Length: 570mm
• Maximum Turns: Infinity
• Net Weight: 2.45kg
• Electronic Limit Switch: Yes
• Built-In Receiver: Yes
• Wireless Limit Setting: Yes
• External Antenna: Yes
• Obstacle Detection: Both directions
• Compatible Brackets: A3438, A3439, A3440

Compatible Accessories

These are specifically confirmed by Alpha:

Alpha A3438 Motor Bracket

Alpha A3439 Motor Bracket

Alpha A3440 Motor Bracket

I wouldn’t add the RS001/RS002 sensors here because Alpha hasn’t listed them in the information for this specific OD model.

Electrical Installation

The Alpha WSER50 OD 30/17 Obstacle Detection Motor operates at 240V mains voltage.

Electrical installation must comply with applicable Australian electrical requirements and be completed by appropriately licensed personnel where required.

FAQs

What is the Alpha WSER50 OD 30/17 designed for?

Alpha designed the motor primarily for external Zip-style systems, where the bottom bar travels through side channels.

How does the obstacle detection work?

If the motor detects that the bottom bar has stopped moving while travelling down because it is stuck or has encountered an object, it stops, rebounds upwards and attempts to lower again.

How many times will it retry after detecting an obstacle?

The motor can attempt the downward movement three times. If the obstruction remains, it returns to the rebound position and stops.

What happens if wind prevents the awning from lowering?

Alpha states that if the motor detects wind preventing normal operation rather than an obstacle, it returns the awning to the top limit.

Does it have torque-stop functionality?

Yes. Alpha specifies tensioning/torque stop on upward movement, including the ability to stop against compatible upper stoppers.

What torque does the Alpha WSER50 OD 30/17 provide?

It provides 30Nm of rated torque and operates at 17 rpm.

Which mounting brackets are compatible?

Alpha specifically lists the A3438, A3439 and A3440 mounting brackets as compatible with this motor.