Technical information
and start-up
BSC624-12V-B
42
7.1.3
Pin 3 EN
INFORMATION
The admissible voltage range for pin 3
EN
=
high
is 7 - 32 V.
For a pin 3
EN
=
low
, a voltage of < 1 V is required.
Internal wiring
To programme a new firmware, pin 13 must be
PRO
=
high
.
For this purpose, it is not necessary that pin 3 is
EN
=
high
.
If voltage is applied to pin 2
AUX
and if pin 3 is
EN
=
high
, the device is put into the operational mode. Most
appropriately, this is implemented by means of a connection of pin 3
EN
with the Plus wiring system via a
switch.
Even if high voltage is applied to the HV connector, the device-internal logic is only supplied if pin 3 is
EN
=
high
(or pin 13
PROG
=
high
).
