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Pilz PSS SB DI80Z4
Product Name
Safety digital input/output module for the PSS range safety control system, communicating over the SafetyBUS p open safety bus.
Product Overview
Distributed digital I/O circuit used to read and process input and output states in bit or byte form. Inputs and outputs on the module can be assigned to up to two logical groups on SafetyBUS p. Each input and output has a dedicated blank space for marking plus a status LED on the front panel.
Detailed content
Technical Specifications
- Manufacturer: Pilz
- Product series: PSS SB (SafetyBUS p)
- Ordering number: 301120
- Module type: Safety digital input/output module
- Digital inputs: 8
- Digital outputs: 4 semiconductor outputs (positive-switching 4 / negative-switching 4)
- Supply voltage: 24 V DC
- Communication protocol: SafetyBUS p
- Safety level: SIL 3 (per IEC 61508)
- Protection class: IP20
- Operating temperature: -20 °C to +70 °C (defined range −20 to +70 °C)
- Storage temperature: -40 °C to +85 °C
- Mounting: DIN rail
- Approvals: UL/cUL, CE, TÜV, BG
Functional Features
- Provides safe, reliable acquisition of field sensor signals (emergency stop buttons, safety gates, light curtains).
- Drives actuators such as contactors and indicator lamps.
- Every channel is subject to strict safety certification.
- Compact design conserving control cabinet space.
- Broad international approvals for global deployment.
Application Scenarios
- Manufacturing machinery and production lines.
- Robotics.
- Packaging machinery.
- Material handling systems.
- Any industry requiring functional safety control.
Installation Requirements
- DIN rail mounting inside a control cabinet.
- No live insertion or removal: the module is part of a safety chain, and hot-swapping can interrupt bus communication and disable the safety function. Always isolate the entire safety circuit before fitting or removing the unit.
Usage Precautions
- Power LED unlit indicates a 24 V supply fault.
- A steadily lit or flashing Fault LED indicates an internal fault or external connection fault.
- If an input signal is present but the corresponding In LED stays off, or an output command is issued but the Out LED stays off, suspect an internal bus fault after checking the wiring.
