Moeller ps4-201-mm1, Hardware And Engineering

Page: 12 / 94

About the PS4-200
Compact PLC
8
04/
99 AW
B
27-
1184 G
B
Elements Power supply unit
The PS4-200 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 in the control cabinet to be supplied
with voltages to industrial standards (IEC).
High-speed counter input
You can count pulses at up to 3 kHz via the digital
input I 0.0, irrespective of the cycle time. The up
counter is capable of processing square-wave
pulses with a pulse/pause ratio of 1. A function block
is provided in the programming software for the high-
speed counter.
Alarm input
The digital input I 0.1 enables you to respond to
events quickly, irrespective of the cycle time. You
can use either the rising or the falling edge to
evaluate these events. A function block is provided in
the programming software for the alarm input.
Digital inputs
The PLC has 8 digital inputs. They are galvanically
isolated from the CPU. The inputs are designed for
24 V DC. The input delay of normally 55 ms ensures
short response times (e.g. for direct peripheral scans
and alarm evaluations). Inputs I 0.0 to I 0.7 can be
addressed in bit or byte format with peripheral I/O
commands.