Lenze 520 Series - 5 Integrated Brake Chopper; Technical Data (R.M.s. Values)

4Q - DC Chopper 520 series 49
5. INTEGRATED BRAKE CHOPPER
In the generator mode, e.g. when braking the drive, the machine feeds back energy
into the DC bus of the controller. If the DC bus voltage exceeds the maximum
permissible value, the controller sets trip. (see 8.1).
Overvoltage in the DC bus is generated, if large inertias are brake and/or short
deceleration times are set. To avoid overvoltage during braking, a brake chopper is
used. The brake chopper consists of a brake transistor, which already integrated into
the standard device and a brake resistor, which is connected to the terminals
±UG/RB1 and RB2 as option.
5.1
TECHNICAL DATA (R.M.S. VALUES)
Controller type 522E 524E
Permanent brake current 2 A 6 A
Peak brake current (
1BR peak) ~ A 10.20 A
Switching threshold (VzK) 375 VDC 375 VDC
Permanent brake power 750 W 2250 W
Peak brake power for max 20s 1400 W 3800 W
smallest brake resistor RBR min 100 Q 37 Q
Lenze