P. 10 - Inputs
Inputs
opto
-
+
ground
Schmitt-input
1 K
A
ir
c
o
il
Scematic display of an input
All inputs are equipped with opto-couplers, which provide care of a perfect separation between
the internal
BANDIT
electronics and the “outside world”. This way, all unwanted disturbing
signals, caused by lightning, induction or R.F. tensions, are kept outside.
The device, model 240PB , is equipped with 4 inputs. The function is determined by selecting
the desired function trough PC/laptop.
Electrical properties of an input:
- polarised (+ and - signs beneath connectors on
PCB.
- secured for possible polarity reverse and equipped
with RC- and LC- filter.
- an input has to be stable for at least 0.2 seconds
before the new situation is accepted.
- the connected voltage can be either from an external
source or from the 12 V
BANDIT
supply source
itself [Supply].
- the input current with 12 V is ~ 10 mA each input.
- each input is equipped with a Schmitt-input, after
the opto-coupler. The trigger voltage is approximately
6 V with hysteresis of + and - 1V. This way,
unreliable input voltages are being avoided
as much as possible.
1
1
5
1
5
1
V =
After adjustments: check the voltage over
the inputs.
- Consider < 2 V as no volts.
- Consider > 9 V as 12 V .
Voltages between 2 and 9 V are not normal
and will cause problems sooner or later.
BANDIT
240 PB
v.408
P
ro
g
ra
m
m
a
b
le
o
u
tp
u
t n
°
2
P
ro
g
ra
m
m
a
b
le
o
u
tp
u
t n
°
1
T
e
c
h
n
ic
a
l O
K
o
u
tp
u
t
T
a
m
p
e
rlo
o
p
o
u
tp
u
t
[T
a
m
p
o
u
t]
P
ro
g
ra
m
m
a
b
le
in
p
u
t n
°
3
P
ro
g
ra
m
m
a
b
le
in
p
u
t °
. 4
P
ro
g
ra
m
m
a
b
le
in
p
u
t n
°
2
P
ro
g
ra
m
m
a
b
le
in
p
u
t n
°
1
1
2
V
D
C
s
u
p
p
ly
(m
a
x
. 5
0
0
m
A
)
12 V =
+
+
+
+
+
c
c
c
c
c
c
-
-
-
-
-
Supply
Xin1
Xin2
Xin3
Xin4
Tmpout
OKout
OKout
Xout1
Xout2
X+
X+
X+
X+
Ta
com
com
com
nc
nc
nc
nc
nc
nc
no
no
no
no
no
no
X-
X-
X-
X-
Tb
500 mA.
inputs: 12 V = / 10 mA.
outputs: maximum 24 V / 1A.
Programmable inputs