BD3 fast eddy current brake power supply interface

2.460,003.198,00

BD3 interface is an essential device used to power eddy current dyno brake. Is carries out following tasks:

  • Mains AC to DC conversion to power the brake winding.
  • Brake current regulation according to received logic-level PWM signal or CAN bus message

Specification

  • Supply: 100-400VAC, 50-60Hz, 1-3 phase
  • Nominal brake current up to 22.5A or up to 45A
  • Fast brake torque control with microcontroller operated closed loop current control and fast discharge (demagnetization).
  • Thermal protection
  • Isolated input
Clear

Description

Specification

Supply 100-400VAC
50-60Hz
1-3 phase
Brake continuous current BD3-22.5A:
22.5A @ 40°C ambient

BD3-45A:
45A @ 25°C ambient
40A @ 40°C ambient

Brake discharge method Fast discharge with storage capacitor
Typical full charge time
(0 to full torque)
Less than 0.2s
Typical full discharge time
(full torque to 0)
Less than 0.02s
Switching frequency Adaptive, up to 4kHz
Brake current control Controlled with microcontroller in closed loop
Current target control Programmable current range
Galvanically isolated PWM input, 15Hz – 4kHz, 4V – 8V, higher input voltage allowed with external resistor
Galvanically isolated CAN bus interface, CAN-BUS 2.0B, 500kBit
Diagnostics CAN bus:
Brake current
Power stage temperature
Switching frequency

Additional information possible in future with firmware updates
Environment temperature range −20°C – 50°C
Power stage thermal protection threshold 90°C
Operating humidity 0%-95% without condensation
Dimensions 22.5A:
14cm x 15.5cm x 12cm
45A:
26cm x 23.5cm x 11cm
Mass 22.5A: 1.3kg
45A: 3.3kg

Full specification and instruction manual

BD series brake power supplies comparison

Additional information

Nominal current

22.5A, 45A

Capacitor

250uF, 530uF