Technical data
and startup
44
8.3.6
Pin 13 PRO (Enable firmware programming)
INSTRUCTION
The programming of the wrong firmware can lead to the damage of the inverter!
The programming may only be carried out after consultation with the company BRUSA Elektronik
AG!
INFORMATION
This pin is only activated for the programming of a new firmware (Pin
PRO
=
high
). Pin 3
EN
must
also be
high
for this.
In normal operation, this pin may not be wired or it must be directly connected with terminal 31. An
open circuit can lead to a reset of the inverter!
Internal wiring
4
7
n
F
Pin 13
PRO
1
0
u
F
Schmitt
Trigger
22k
Ω
5V-
Supply
Enable
22
k
Ω
1,0V
3,3V
48V
As soon as Pin 13
PRO
is
high
, the following processes are triggered:
The inverter is stopped (reset) if it is in operation.
The programming can now be carried out via the serial interface.
