Dunkermotoren E300A Power-On Brake

The Dunkermotoren E300A is a 24 Vdc power-on brake rated at 2.5 Nm nominal torque, with a torque range of 1.50–3.50 Nm over the temperature 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 E300A draws 0.41 A at 10 W nominal input power, engaging in 17 ms and releasing in 8 ms. This is quicker to release than the smaller E50A and E105A despite applying more torque, which matters where an axis has to be freed between cycles. It measures 65 mm in diameter by 40 mm long, weighs 0.35 kg, runs with low noise and carries IP 20 protection as supplied. Connection is by 400 mm Teflon leads of 0.5 mm² cross-section, black for GND and red for Vdc.Power-on brakes are supplied on request. All rated values apply in the run-in condition.