P. 17 - Outputs - Guard output
Output: guard output
[Grdout]
This output is a npn-transistor output, so not potential free. This transistor output
switches between floating and 0 [Supply].
0 V
12 V
MCU output
[Alout]
[Grdout]
Schematic display of the alarm output
[Alout] and guard output [Grdout]
Electrical properties of a npn-output:
- not potential free, switches [Supply-] on or off.
- maximum 200mA continuous load at 12 Vdc.
- equipped with run-free diodes to switch small inductive
loads, such as 12 Vdc relays, etc.
- if the MCU resets or is being reset, this output
will switch to floating
-The transistor is a zener-clamp secured DMOS
with in conduction resistance of 1,3 Ohm.
Direct short circuit of. [] means the transistor
will be broken, return unit to company, out of warranty!
This npn-transistor output is represented on the PCB by print-connectors [Grdout].
The transistor conducts as long as the unit is in guard mode.
The transistor output floats as long as the unit isn’t in guard mode.
A common application for this handy [Grdout] output is to connect this output through a
separating relay with an auto dialer (report the guard mode) or to switch directly a Jumbo-
Led(s).
BANDIT
240 DB
v.206
[]
F
Jumbo-LED
option
Jumbo-LED is a little waterproof box as big as a box of matches
with integrated 12 V LED of 2 cm diameter. Is used to warn
bypassers an alarm system is in guard mode. Cheap, free of
maintenance and as
a preventati
ve warning it is as efficient as
a visible outer siren. For the owner, it is a clear sign that
BANDIT
is in guard mode.
Function: as long as
BANDIT
is in guard mode, this Jumbo-LED
will blink (~ 1 Hz). A maximum of two Jumbo-LED(s)
can be connected on [Grdout] .
12 meter
connection cable
delivered within.
Can be extended
to max.100 meter
.
C
O
M
OKout
G
rd
o
u
t
A
lo
u
t
Tmpout
Alin
Panin
Grdin
Supply
12 V
500 mA
Ta
P+
A+
G+
+
Tb
P-
A-
G-
0
Blue and black wire
make a closed loop,
which eventually can
be integrated in the
sabotage loop.
Blue
Bla k
c
Red
W
h
ite
R
e
a
l
s
iz
e
