1.4.1 Overview of the modules
The PROTECT-PSC system essentially consists of the following modules:
POWER Modul, produces 3.3VDC from 24VDC and provides to CPU and In-
put/Output modules (PSC-Power, PSC-Booster).
CPU module, responsible for processing the user program and controlling the
input/output modules (PSC-CPU-OP-MON, PSC-CPU-MON ).
Input/output modules to record/control the states of externally connected
sensors/actuators (PSC-SUB-MON, PSC-S-STP-E, PSC-S-STP-LC, PSC-S-STP-
ELC, PSC-S-IN-E, PSC-S-IN-LC, PSC-S-OUT, PSC-S-Relais)
Non-Safety Input/Output modules to record/control the states of externally
connected sensors/actuators (PSC-NS-IN, PSC-NS-OUT+)
All the above mentioned modules (with the exception of the back plane) have a
redundant structure with two 16 bit microcontrollers monitoring each other.
1.4.2 Brief data
• Can be used in applications up to PL e, category 4 to ISO 13849-1.
• In operating mode 3 programming can be done by ladder diagram (conform-
ing to IEC 61131).
• Programming by means of Windows PC via USB interface
• Safety and standard Inputs/Outputs are available in mode 3.
• A maximum of 254 Input/Output channels are available.
• Possibility to store documentation / comments.
• Monitored 24 VDC power supply .
• Input/output modules with self-monitoring.
• Connection facilities:
Sensor level: EMERGENCY-OFF (EMERGENCY-STOP), AOPD, BNS,
protective guards, two- hand-operating panels…
Actuator level: Relays, contactors, signal/indicator lamps...
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