Encoders

Dunkermotoren AE38 Absolute Encoder

Name: Dunkermotoren AE38 Absolute Encoder
Brand: Powerbox Pacific
SKU: AE38
Availability: OutOfStock

The Dunkermotoren AE38 is a battery-free absolute encoder that reports true shaft position the instant the drive powers up — with no homing move or reference run before the axis can be trusted.It integrates inside the motor’s own profile housing rather than bolting on as a separate unit, without an extra enclosure, and feeds position straight to...

The Dunkermotoren AE38 is a battery-free absolute encoder that reports true shaft position the instant the drive powers up — with no homing move or reference run before the axis can be trusted.

It integrates inside the motor’s own profile housing rather than bolting on as a separate unit, without an extra enclosure, and feeds position straight to the internal Dunkermotoren controller. Its multiturn count is held by Energy Harvesting — power drawn from shaft rotation — so there is no backup battery to monitor or replace.

The same encoder suits Dunkermotoren’s BG brushless DC motor range, with overall length varying by motor frame, so a drive can be specified with absolute feedback built in from the outset rather than added later.

It fits positioning and motion-control tasks where the axis must come up already referenced — automated machinery, handling and actuation duties that can’t afford a homing cycle at every power-up.

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Features

Absolute feedback means the drive knows true shaft position the instant it powers up — no homing move at start-up
Energy Harvesting powers the multiturn counter from shaft rotation, so there is no battery to monitor, replace or schedule downtime for
16 Bit singleturn (65,536 counts) resolves very fine shaft movement for high-accuracy positioning duties
16 Bit multiturn tracks over 65,000 revolutions, so long travels stay absolutely referenced without an external counter
Separate 12 Bit commutation output feeds the drive what it needs for motor control while positioning runs at full resolution
SSI output goes straight into the internal Dunkermotoren controller, keeping feedback wiring inside the motor

Specifications

Dunkermotoren AE38 Absolute Encoder Specifications
Encoder Type	Absolute Encoder
Compatible Motor Series	BG 45, BG 66, BG 75, BG 95
Resolution
Resolution singleturn	12 Bit (4096 cpr) for Commutation 16 Bit (65536 cpr) for Positioning
Resolution multiturn	16 Bit
Electrical
Output stage	Via SSI to internal motor controller
Counter buffering	Energy Harvesting, battery-free technology
Performance
Accuracy	±0.0878° (≤ 12 Bit)
Mechanical
Housing / Protection	Protected in the profile housing of the motor
Protection Class	IP 65
Length (L in mm)
BG 45 – AE38	60 mm
BG 66 – AE38	65 mm
BG 75 – AE38	69 mm
BG 95 – AE38	65 mm

Technical Drawings

Downloads

dunkermotoren-ae-38-absolute-encoder-datasheet.pdf

Warranty & Returns

Warranty periods vary by product. Please refer to the Powerbox Warranty Policy for the applicable coverage period against manufacturing defects from date of purchase. For returns and RMA requests, please visit our RMA support page or contact our support team directly.

FAQs

What makes the AE38 an “absolute” encoder, and why does that matter?

The AE38 reports true shaft position the instant the drive powers up, so the axis is referenced immediately — there is no homing move or reference run at start-up, unlike an incremental encoder that only counts change from power-on.

How does the AE38 work without a backup battery?

It uses Dunkermotoren's Energy Harvesting technology, drawing power from shaft rotation to keep the multiturn counter running, so there is no backup battery to monitor, replace or schedule downtime for.

What resolution does the AE38 provide?

The AE38 provides 16 Bit (65,536 cpr) singleturn resolution for positioning plus a separate 12 Bit (4,096 cpr) singleturn output for commutation, with 16 Bit multiturn resolution tracking over 65,000 revolutions.

Which motors is the AE38 compatible with, and does its size change?

The AE38 integrates with the Dunkermotoren BG 45, BG 66, BG 75 and BG 95 brushless DC motor series; overall length depends on the frame — 60 mm on BG 45, 65 mm on BG 66 and BG 95, and 69 mm on BG 75.

How does the AE38 connect to the drive?

The AE38 outputs over SSI directly to the internal Dunkermotoren motor controller, keeping the feedback wiring inside the motor rather than running to an external interface.

How is the AE38 protected inside the motor?

The AE38 is integrated within the motor's profile housing, so it's protected without a separate enclosure or added external length.

What positioning accuracy does the AE38 offer?

The AE38 offers a positional accuracy of ±0.0878° (within 12 Bit), suitable for high-accuracy positioning and commutation in closed-loop motor control.

How do I select or order the AE38 for my motor?

The AE38 is the integrated absolute-feedback option on the compatible BG motor frames. For selection help or to confirm the right configuration for your Australian or New Zealand installation, contact Powerbox at sales@powerbox.com.au.

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