Alpha WSER50 G 20/17 Universal Grey Motor

The Alpha WSER50 G 20/17 Universal Grey Motor is a versatile 20Nm economy motor designed for external straight-drop awnings, Zip systems and roller shutters.

Although positioned as the economy option in Alpha’s WSER50 Universal range, this motor retains the key functionality of the larger 30Nm and 50Nm Universal models, including the important upward torque-stop function.

The motor delivers 20Nm of rated torque at 17 rpm and incorporates an electronic limit switch, built-in radio receiver and wireless limit setting.

Its 45mm tubular design makes it a practical option where 20Nm provides sufficient torque for the application.

Designed for External Straight-Drop Systems

Alpha specifically identifies the WSER50 G 20/17 as suitable for external straight-drop awnings.

These systems can require more than simply stopping at electronically programmed upper and lower limits.

The motor’s torque-stop functionality allows it to respond to physical resistance during upward movement, providing additional options for compatible external awning systems.

Suitable for Zip Systems

The motor is also suitable for compatible Zip-style systems.

These systems guide the awning fabric through side channels, helping retain the fabric as it travels between its upper and lower positions.

For compatible installations, the WSER50 G’s upward torque-stop function can be used with physical stoppers at the top of the system.

Upward Torque-Stop Function

One of the most important features of the Alpha WSER50 G 20/17 Universal Grey Motor is its upward torque-stop functionality.

In compatible side-channel systems, the motor can stop the awning against physical stoppers at the upper position.

A normal electronic top limit can still be programmed, with the torque-stop function used in conjunction with that limit.

This provides flexibility when configuring the motor for different external awning systems.

Fabric Tensioning

The torque-stop functionality can also assist with tensioning the fabric when the awning is down.

This is particularly useful for compatible external straight-drop and Zip systems where maintaining appropriate fabric tension forms part of the system’s operation.

The combination of electronic limits and torque-stop functionality allows the motor to accommodate these specialised external applications.

Roller Shutter Applications

The WSER50 G 20/17 isn’t restricted to awnings.

Alpha also specifies that the motor can be installed in roller shutters where 20Nm provides sufficient lifting capacity.

Motor selection must therefore be based on the requirements of the particular shutter, including its size, weight, tube configuration and overall system design.

20Nm Economy Motor

Alpha describes the WSER50 G 20/17 as a 20Nm economy motor.

It delivers:

20Nm rated torque

17 rpm output speed

The motor operates from 240V mains power and has a nominal consumption of 203W with a nominal current of 0.84A.

This gives customers another option within the WSER50 Universal range where the higher torque of a 30Nm or 50Nm motor isn’t required.

Built-In Radio Receiver

The motor incorporates a built-in radio receiver, allowing wireless operation with compatible Alpha remote controls.

Because the receiver is integrated into the motor, a separate external radio receiver isn’t required for normal compatible radio-control operation.

Electronic Limit Switch

The Alpha WSER50 G 20/17 incorporates an electronic limit switch.

Electronic limits allow the motor’s normal stopping positions to be programmed without relying on conventional mechanical limit adjustment.

Alpha specifies a maximum travel of 27 turns for this particular model.

That’s worth noting because, unlike several other WSER50 motors we’ve added with an Infinity specification, this one is specifically listed by Alpha at 27 turns.

Wireless Limit Setting

The motor supports wireless limit setting, allowing its electronic stopping positions to be configured using compatible Alpha radio-control equipment.

This provides convenient setup when the motor is installed within an awning or shutter assembly.

RS001 and RS002 Sun/Wind Sensor Compatibility

Alpha specifically confirms the WSER50 G 20/17 as suitable for use with:

Alpha RS001 Sun/Wind Sensor

Alpha RS002 Sun/Wind Sensor

These are therefore safe to include as internal links on the Frontline product page.

Sensor Communication Protection

When operating with a compatible Sun/Wind sensor, the motor monitors a regular signal from the sensor.

Alpha states that the sensor issues a pulse approximately every 20 minutes.

If the awning is down and the motor doesn’t receive the expected test signal for approximately 30 minutes, the motor automatically raises the awning.

This protective behaviour assumes that the sensor may have failed and helps avoid leaving the awning extended without functioning sensor protection.

Key Features

• 20Nm economy motor
• 17 rpm output speed
• 240V wired operation
• 45mm diameter
• Ideal for external straight-drop awnings
• Suitable for compatible Zip systems
• Suitable for roller shutters where 20Nm is sufficient
• Upward torque-stop function
• Can stop against compatible upper stoppers
• Fabric tensioning functionality
• Electronic limit switch
• Built-in radio receiver
• Wireless limit setting
• 3-core motor
• Compatible with RS001 Sun/Wind Sensor
• Compatible with RS002 Sun/Wind Sensor
• Protective automatic raising if sensor communication is lost
• IP44 protection

Technical Specifications

• Model: Alpha WSER50 G 20/17 Universal Grey
• Product Code: WSER50 G 20/17 Universal Grey
• Rated Torque: 20Nm
• Output Speed: 17 rpm
• Nominal Consumption: 203W
• Nominal Voltage: 240V
• Nominal Current: 0.84A
• Running Time: 4 minutes
• Protection Index: IP44
• Motor Diameter: 45mm
• Total Length: 570mm
• Maximum Turns: 27
• Net Weight: 1.92kg
• Electronic Limit Switch: Yes
• Built-In Receiver: Yes
• Wireless Limit Setting: Yes
• Motor Wiring: 3 core
• Included C&D: N/A
• Included Motor Bracket: A3415

Compatible Accessories

Alpha RS001 Sun/Wind Sensor
Compatible Sun/Wind sensor specifically identified by Alpha for the WSER50 G 20/17.

Alpha RS002 Sun/Wind Sensor
Compatible Sun/Wind sensor with the motor’s protective communication-monitoring functionality.

These are both good internal links because Alpha explicitly confirms compatibility.

Electrical Installation

The Alpha WSER50 G 20/17 Universal Grey 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 G 20/17 Universal Grey Motor designed for?

Alpha specifies the motor for external straight-drop awnings, Zip systems and roller shutters where its 20Nm torque is suitable.

Is this an economy motor?

Yes. Alpha describes the WSER50 G 20/17 as its 20Nm economy motor, while retaining the functionality of the larger WSER50 Universal motors.

Does the motor have torque-stop functionality?

Yes. It features upward torque stop, which can be used against physical upper stoppers and for tensioning compatible external awning systems.

Can it be used in roller shutters?

Yes. Alpha states it can be installed in roller shutters where 20Nm provides sufficient lifting capacity.

Does it have a built-in receiver?

Yes. The WSER50 G incorporates a built-in radio receiver and supports wireless limit setting.

Which Sun/Wind sensors are compatible?

Alpha specifically identifies the RS001 and RS002 Sun/Wind Sensors as compatible with this motor.

What happens if the Sun/Wind sensor stops communicating?

The sensor normally sends a pulse approximately every 20 minutes. If the awning is extended and the motor doesn’t receive the signal for approximately 30 minutes, it automatically raises the awning as a protective measure.