Dunkermotoren E50A Power-On Brake
The Dunkermotoren E50A is a 24 Vdc power-on brake rated at 0.4 Nm nominal torque, with a torque range of 0.25–0.60 Nm over the temperature range. A power-on brake applies torque when it is energised and releases when supply is removed. This is the opposite of the power-off brakes in the Dunkermotoren range. It is specified where braking is a com...
Read MoreThe Dunkermotoren E50A is a 24 Vdc power-on brake rated at 0.4 Nm nominal torque, with a torque range of 0.25–0.60 Nm over the temperature range. A power-on brake applies torque when it is energised and releases when supply is removed. This is 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 E50A draws 0.22 A at 6 W nominal input power, engaging in 5 ms and releasing in 15 ms: the quickest engagement in the power-on series. It measures 39 mm in diameter by 35 mm long, weighs 0.12 kg and runs with low noise. Dunkermotoren rates it IP 30/65, the only brake in the range carrying two protection figures. Connection is by 400 mm leads of 0.25 mm² cross-section, red/green for GND and blue/green for Vdc.
Power-on brakes are supplied on request. All rated values apply in the run-in condition.
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Features
- 0.4 Nm nominal torque, 0.25–0.60 Nm over temperature
- Power-on operation: applies torque when energised, releases when supply is removed
- 5 ms activation time, the quickest engagement of the power-on series
- 15 ms deactivation time
- 24 Vdc at 0.22 A / 6 W
- Ø39 mm × 35 mm, 0.12 kg
- IP 30/65, the only brake in the range with a dual protection rating
- Low noise operation
- 400 mm leads, 0.25 mm² cross-section, red/green GND / blue/green Vdc
Specifications
| POWER-ON BRAKE SPECIFICATIONS | ||
|---|---|---|
| Nominal voltage | Vdc | 24 |
| Nominal torque(1) | Nm | 0.4 |
| Torque range(1)(2) | Nm | 0.25–0.60 |
| Nominal current(1) | A | 0.22 |
| Nominal input power(1) | W | 6 |
| Activation time | ms | 5 |
| Deactivation time | ms | 15 |
| Protection class | IP | 30/65 |
| Weight | kg | 0.12 |
| Noise | – | low noise |
| Diameter (Ø) | mm | 39 |
| Length (L) | mm | 35 |
| Strand colour GND | – | red/green |
| Strand colour Vdc | – | blue/green |
| Strand length | mm | 400 |
| Strand type / cross section | – | 0.25 mm² |
| (1) Values valid in run-in condition | ||
| (2) Over the temperature | ||
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
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