PILZ 312070: PSSuniversal PLC Head Module for Integrated Safety and Standard Control

Product Overview

The PILZ 312070, designated as the PSSu H PLC1 FS SN SD, is a head module for the PSSuniversal PLC control system, engineered to deliver both failsafe safety control and standard automation capabilities within a single hardware platform. This module achieves Performance Level e (PL e) according to ISO 13849 1 and Safety Integrity Level 3 (SIL CL 3) according to IEC 61508, making it suitable for the most demanding safety critical applications. It combines two Ethernet ports for flexible networking, an SD card slot for memory expansion, and integrated support for multiple industrial communication protocols. The 312070 is designed for use in a wide range of industries including automotive, packaging, material handling, and railroad applications.

Key Features of PILZ 312070

The head module provides a single platform for both safety and standard control tasks, eliminating the need for separate controllers and reducing system complexity and hardware costs. It achieves high safety integrity levels of PL e and SIL CL 3, certified for use in applications requiring the highest levels of risk reduction. The module features two RJ45 ports supporting SafetyNET p RTFN real time fault tolerant network protocol for deterministic safety related communication, as well as Modbus TCP, EtherNet IP adapter, PROFINET IO device, Raw UDP, and Raw TCP protocols for standard automation networking. The integrated SD card slot allows for convenient program storage, data logging, and system memory expansion.

Technical Specifications

• Manufacturer: Pilz

• Part Number: 312070

• Product Type: PSSu H PLC1 FS SN SD Head Module

• Control System: PSSuniversal PLC

• Safety Level: PL e (EN ISO 13849-1), SIL CL 3 (IEC 61508)

• Functionality: Failsafe and standard control

• Communication Interfaces: 2 x RJ45 Ethernet ports

• Supported Protocols: SafetyNET p RTFN, Modbus TCP, Raw UDP, Raw TCP, EtherNet IP adapter, PROFINET IO device

• Memory: SD card slot, 4 MB total user memory, 128 MB RAM

• Supply Voltage: 24 V DC

• Power Consumption: 16.0 W

• Ambient Temperature: 0 to 60 degrees Celsius

• Protection Type: IP20

• Dimensions (W x H x D): 130.0 mm x 125.6 mm x 83.7 mm

• Net Weight: 365 g

• Certifications: CE, cULus Listed, EAC, TUV, KOSHA

• Product Standard: EN 61131-2

Functional Description

The 312070 serves as the central processing unit for a PSSuniversal PLC system, executing both safety oriented user programs written in PASmulti language and standard control programs written in IEC 61131 3 languages including ladder diagram, structured text, and function block diagram. The module continuously processes safety inputs from connected safety devices such as emergency stop buttons, light curtains, and safety switches, and drives safety outputs to contactors and valves while maintaining the required diagnostic coverage and fault tolerance. The SafetyNET p RTFN protocol provides deterministic real time communication for safety related data exchange between multiple PSSuniversal PLC stations, certified for use in safety networks up to SIL CL 3. The second Ethernet port can be configured for standard industrial protocols, enabling the module to exchange process data with SCADA systems, HMIs, and other automation equipment.

Programming and Configuration

The PSSuniversal PLC system is programmed using the Pilz PAS4000 software platform, which integrates both safety and standard programming environments. Safety applications are developed using the graphical PASmulti editor, which provides pre certified function blocks for common safety functions, simplifying compliance with safety standards. Standard automation tasks are programmed using IEC 61131 3 languages through the integrated PLC programming environment. The SD card stores the combined safety and standard program, which is automatically loaded when the module is powered on. Online monitoring, debugging, and program changes can be performed through the Ethernet interface using the PAS4000 software while the system is operational.

Applications

The PILZ 312070 is deployed in machinery and systems that require integrated safety and standard control, such as packaging lines, robotic work cells, press automation systems, conveyor networks, and railroad signaling equipment. The dual protocol networking capability allows the module to act as both a safety controller on a SafetyNET p network and a standard PLC on an EtherNet IP or PROFINET network simultaneously. The combination of PL e and SIL CL 3 safety ratings makes this module suitable for applications with severe injury risk potentials, where the failure of a safety function could result in life threatening incidents. For system integrators, the unified programming environment reduces engineering time and eliminates the complexity of integrating separate safety and standard control platforms.