161
7.7 A
PPLICATOR
I
NTERFACE
(
OPTION
)
ALS
20X
256
7.7.3
Circuit diagrams for signal
inputs
All signal outputs are designed as PNP and are gal-
vanically separated from the 5 V control system (opto-
coupler).
[180] Maximum ouput current.
The maximum output power drawable from the 24 V
supply is 24 W (1 A). This is the sum of all sensor sup-
plies and of all switch outputs which are active at the
same time.
[181] Main circuit for outputs (PNP).
The outputs are equipped with quad channel
power switches, which are protected against
overcurrent and overtemperature as follows:
–
Overtemperature
of a power switch: all out-
puts of the power switch are turned off, until the tem-
perature reaches the admissible range.
–
Overcurrent
of one or several outputs: the respecti-
ve outputs are pulsed until the overcurrent condition
is removed. During this, the output current is limited
to 400mA
During an error case, each quad channel power switch
sets a diagnosis signal, which is detected and sent to
the CPU by the microcontroller.
7.7.4
Power outputs
Power outputs can directly drive loads.
[182] Admissible loads at power outputs.
Maximum admissible output current for each power
output: 0.5 A (I
max
over all outputs < 1 A).
1) Rise time „0“
→
„1“ at 48 Ohm
2) Fall time „1“
→
„0“ at 48 Ohm
3) 5 V microcontroller output
→
24 V
[183] Switching levels of power outputs.
Connection
Maximalstrom
Applicator
0.5 A each power output
Maschine status
0.5 A each power output
24 V
Load
GND
GND
Applicator Interface
5 V
Load
Max. value
Resistive load
≥
48 Ohm @ 24 VDC
Inductive load
≤
200 mJ
Lamp
≤
10 W
Quantity
Value
Note
Supply voltage
24 V ±10%
Voltage drop at V
OH
≤
0,5 V @ 0,5 A
t
pLH
≤
5 µs
1)
t
pHL
≤
5 µs
2)
t
delay
≤
60 µs
3)
Summary of Contents for ALS 204
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