About The PS 4-300
Compact PLC
8
04/99 AWB 2700-1311 GB
Features of the
PS 4-300
햲 Power supply unit
The PS 4-300 is operated with a rated voltage of
24 V DC. The power supply connection is protected
against polarity reversal. The 24 V connection
enables the PLC to be supplied with voltages to
industrial standards (IEC) and is electrically isolated
from the CPU.
햳 Multi-function inputs
Inputs I0.0, I0.1, I0.2 and I0.3 are used to connect an
incremental encoder. The connection assignment is
shown in Figure 12. Any 24 V encoder (without
antivalent signals) may be connected. The
“IncEncoder”
1
function block is available for
processing input signals.
Input I 0.0 (“high-speed counter”) can also be used to
record high-speed pulse trains. The signal level (L/H)
at input I0.1 determines the counting direction. This
input is supported by the “CounterAlarm”1 function
block.
Inputs I0.0 to I0.3 can also be used as digital inputs.
햴 Digital inputs
The PLC has 16 digital inputs. They are electrically isolated
from the CPU and are designed for a rated voltage of 24 V
DC. The typical input delay of 100
s (not including the
multi-function inputs) ensures short response times, e.g.
for directly scanning peripheral devices or evaluating
alarms. Inputs I0.0 to I0.7 and I1.0 to I1.7 can be addressed
in bit, byte or word format with I/O commands.
1) These function blocks are described in chapter 6 of the
manual “Language Elements for the PS 4-150/-200/-300
and PS 416” (AWB 2700-1306 GB).
H1311g.bk Seite 8 Freitag, 4. Juni 1999 1:12 13
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