Brakes

Dunkermotoren E605A Power-On Brake

Name: E605A Dunkermotoren E605A Power-On Brake
SKU: E605A

The Dunkermotoren E605A is a 24 Vdc power-on brake rated at 4.5 Nm nominal torque, with a torque range of 4.00–8.50 Nm over the temperature range: the highest-torque brake in the power-on series and the widest torque band in the whole brake range. A power-on brake applies torque when it is energised and releases when supply is removed, the opposite of the power-off brakes in the Dunkermotoren range. It is specified where braking is a commanded function rather than a fail-safe one, since the axis is free when the machine is unpowered.

The E605A draws 0.54 A at 13 W nominal input power, engaging in 30 ms and releasing in 11 ms. It measures 80 mm in diameter by 45 mm long, weighs 0.57 kg and runs with low noise. Uniquely among the brakes on this page it is rated IP65 as supplied rather than IP 20, so it does not depend on covers or a motor profile housing to reach a sealed rating. In an IP 65 extruded-body installation it is listed with the BG75 motor, giving an overall length of 85 mm. Supplied with 400 mm leads.

Power-on brakes are supplied on request. All rated values apply in the run-in condition.

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Dunkermotoren E605A electromagnetic holding brake with metallic housing, central bore and mounting pins

Features

Power-on operation applies braking torque only when energised: the axis runs free when the machine is unpowered, for commanded rather than fail-safe braking
4.5 Nm nominal braking (4.00–8.50 Nm over temperature), the highest torque and widest torque band in the power-on range
Rated IP 65 as supplied: sealed against dust and water jets with no covers needed
Engages in 30 ms and releases in 11 ms, commanded braking for the heaviest power-on axes
Low-noise operation for quiet installations
Integrates with BG 75 motors inside an IP 65 profile housing, a specified pairing
The largest power-on brake at Ø80 mm, 45 mm long, 0.57 kg

Specifications

POWER-ON BRAKE SPECIFICATIONS
Nominal voltage	Vdc	24
Nominal torque⁽¹⁾	Nm	4.5
Torque range⁽¹⁾⁽²⁾	Nm	4.00–8.50
Nominal current⁽¹⁾	A	0.54
Nominal input power⁽¹⁾	W	13
Activation time	ms	30
Deactivation time	ms	11
Protection class	IP	65
Weight	kg	0.57
Noise	–	low noise
Diameter (Ø)	mm	80
Length (L)	mm	45
Strand colour GND⁽³⁾	–	–
Strand colour Vdc⁽³⁾	–	–
Strand length	mm	400
Strand type / cross section⁽³⁾	–	–
(1) Values valid in run-in condition
(2) Over the temperature
(3) The datasheet length table gives no strand colour or conductor cross-section for the E605A.

Downloads

dunkermotoren-e605a-power-on-brake-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 torque does the Dunkermotoren E605 A apply?

The E605 A applies 4.5 Nm nominal torque with a 4.00–8.50 Nm range over temperature on a 24 Vdc supply. It is the highest-torque brake in the power-on series: E46 A at 0.3 Nm, E50 A at 0.4 Nm, E105 A at 1.7 Nm, E300 A at 2.5 Nm and E605 A at 4.5 Nm. It also carries the widest torque band of any brake in the Dunkermotoren range.

What is the difference between a power-on brake and a power-off brake?

A power-on brake applies torque when it is energised and releases when supply is removed. A power-off brake does the reverse: it holds when de-energised, so the axis is caught automatically on power loss or emergency stop. Choose a power-on brake where braking is a commanded step in the cycle; choose a power-off brake from the E22R to E600R range where the load must not drift while the machine is unpowered. A power-on brake is not a fail-safe holding brake and should not be specified as one.

Why is the E605 A rated IP 65 when the other brakes are IP 20?

The E605 A is the only brake in the range that Dunkermotoren rates IP 65 as supplied. Every other model is IP 20 out of the box, with the exception of the E50 A at IP 30/65. Brakes can be mounted to the motor openly or with covers in protection class up to IP 65, and in combination with brushless motors they can be integrated into the motor profile housing at IP 65. The practical difference is that the E605 A reaches a sealed rating without depending on the mounting arrangement, which simplifies specification where the brake sits in a washdown or dust-laden environment.

What are the full electrical ratings of the E605 A?

It runs on 24 Vdc drawing 0.54 A at 13 W nominal input power, engages in 30 ms and releases in 11 ms. All rated values apply in the run-in condition, and the torque range applies over the temperature range.

Which motors does the E605 A integrate with at IP 65?

In an IP 65 extruded-body installation the E605 A is listed with the BG75 motor, giving an overall length of 85 mm, the longest brake-and-motor combination on the page. Mounted separately it can be fitted to other motors in the range; send your motor model to sales@powerbox.com.au to confirm the arrangement.

What are the dimensions of the E605 A, and what leads does it use?

The E605 A measures 80 mm in diameter by 45 mm long and weighs 0.57 kg, making it the largest and heaviest power-on brake in the series. Dunkermotoren lists a 400 mm lead length but does not publish strand colours or conductor cross-section for this model. Request the wiring detail through sales@powerbox.com.au before terminating.

Are the power-on brakes stock items?

Dunkermotoren supplies the full power-on series, E46 A, E50 A, E105 A, E300 A and E605 A, on request rather than as standard catalogue items, so lead times differ from the power-off range. Contact sales@powerbox.com.au for current availability before designing one in.

How do I select the right brake for my Dunkermotoren motor?

Selection depends on the torque required at the axis, whether the brake must hold on power loss or only when commanded, the motor series it mounts to, and whether an IP 65 profile-housing installation is needed. Send your motor model and duty details to sales@powerbox.com.au and Powerbox will confirm the right brake and mounting arrangement.

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