Brusa BDC546 - Pin 2 AUX

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Technical data
and start-up
BDC546
7.1.2 Pin 2 AUX
Internal wiring
 If there is no voltage at the highside, the supply to the switching components that are responsible for the
voltages generated inside the device of 3.3 V and 5 V (µC, FPGA, …) is ensured via Pin 2 AUX. Then, it is
possible to communicate with the device by means of pin 16 EN = high, via CAN or RS232. For a highside
voltage of 150V or higher, the internal 15 V supply is activated and takes over the supply. This relieves the
wiring system. The pins 11 PFO_VC+ and 14 PFO_VC- are always supplied via pin 2 AUX. The following
functions are ensured in the case of exclusive supply from the wiring system (control connector):
 CAN communication (sending and receiving)
 Communication via RS232 (monitoring)
 Microprocessor programming (firmware)
 Pyrofuse control
 Main contactor control
Voltage
Pin 2 AUX (V)
Pin 16 EN
(terminal 15)
RUN command
(sent via CAN)
HV voltage (V)
Type. Current draw at
Pin 2 AUX (mA)
12.0
0
0
0
0.641
14.0
0
0
0
0.731
12.0
1
0
0
272.3
14.0
1
0
0
247.0