Description
ABB PFSK164 3BSE021180R1
I. Overview
ABB PFSK164 3BSE021180R1 is a safety extension module, positioned as a "functional enhancement and logic control unit for inverter safety", and belongs to the safety product line of ABB Drive Systems. As a key component of the inverter safety loop, the core functions of this module include implementing safe stop control, fault safety monitoring and safety signal interaction. It meets the requirements of Safety Integrity Level (SIL) 2, and can provide safety protection for inverter operation in compliance with the EN ISO 13849-1 standard through the combination of hardware circuits and software configuration, effectively preventing safety risks caused by equipment misoperation and uncontrolled faults.
Adopting a compact plug-in structure design, the module can be directly embedded into the control unit slot of the ACS800 inverter, and realize high-speed data interaction with the inverter main control unit via the DDCS communication bus, featuring convenient installation and commissioning. With an operating temperature range of -10℃~50℃, it complies with international certifications such as CE and UL as well as industrial electromagnetic compatibility standards, has excellent anti-interference capability, and can adapt to complex working conditions such as industrial workshops, pumping stations and heavy machinery supporting systems. The module supports switching between multiple safety control modes, can flexibly meet the safety protection requirements of different scenarios, and is a core accessory for improving the safety level of the ACS800 inverter system and meeting industrial safety specifications.

II. Core Features
Deep Compatibility and Plug-and-Play with ACS800 Series: Specifically designed for the ACS800 series inverters, it seamlessly connects with the inverter main control unit through a dedicated slot, and realizes high-speed transmission of safety signals and control commands relying on the DDCS communication bus. No additional complex wiring is required, and it can be put into operation immediately after parameter configuration, greatly reducing on-site integration costs.
Integration of Multiple Safety Control Functions: Integrating functions such as safe stop control, safety fault monitoring and safety signal isolation, it supports the connection of external safety components such as emergency stop buttons and safety door switches. It can monitor the integrity of the safety loop in real time, and immediately trigger a safe stop command to cut off the output of dangerous actions once a fault is detected.
Flexible Configuration and Scenario Adaptability: Supporting safety parameter configuration via ABB DriveWindow or DriveComposer software, it can switch safety control modes, adjust stop delay time and set fault reset logic according to actual scenarios. It is highly compatible and suitable for different application scenarios such as standalone operation and multi-device linkage.
- Industrial-Grade Reliability and Fault Self-Diagnosis: Adopting high-stability electronic components and redundant design, it covers an operating temperature range of -10℃~50℃, has excellent resistance to electromagnetic interference and vibration, and meets the requirements of 24/7 continuous operation. Built-in with fault self-diagnosis function, it can monitor the status of the module itself and the integrity of the safety loop in real time. Fault information can be uploaded to the inverter main control unit, facilitating quick troubleshooting by operation and maintenance personnel.

III. Technical Parameters
| Parameter Name | Specification |
|---|---|
| Product Model | ABB PFSK164 3BSE021180R1 |
| Product Type | Inverter safety extension module, exclusively compatible with ACS800 series |
| Power Supply Parameters | Operating Voltage: Powered by the ACS800 inverter control unit, no external independent power supply required |
| Communication Method | Core Communication: Interacts with the inverter main control unit via DDCS bus; Supports hard-wired access of safety signals |
| Safety Functions | Supports safe stop category 0/1; Safety loop monitoring; Fault self-diagnosis; Safety signal isolation |
| Environmental Adaptability | Operating Temperature: -10℃~50℃; Protection Level: Adaptable to inverter cabinet protection (IP20 and above); EMC resistance (IEC 61000-4) |
| Compatibility and Adaptation | Exclusively compatible with ABB ACS800 series inverters; Supports configuration via DriveWindow/DriveComposer software |
| Additional Information | Mounting Method: Plug-in installation (inverter control slot); Warranty Period: 12 months; Fault Response Time: <10ms |

IV. Working Principle and Application Logic
The ABB PFSK164 3BSE021180R1 safety extension module realizes safety protection control relying on the ACS800 inverter main control unit based on the closed-loop working logic of "safety signal acquisition - loop monitoring - logic judgment - safety output". Its core working process is as follows:
The module accesses signals of external safety components (such as emergency stop buttons, safety door switches, two-hand control buttons, etc.) through hard-wired interfaces, and simultaneously monitors the integrity and signal validity of the safety loop in real time to confirm that the external safety components are in normal working condition, generating an initial safety ready signal.
It communicates with the ACS800 inverter main control unit in real time via the DDCS bus, synchronously receives the inverter operation status data, and makes logic judgments combined with preset safety parameters (stop category, delay time, reset conditions, etc.) to determine whether the current equipment operation is within the safe range.
When an external safety signal trigger (such as emergency stop button pressed, safety door opened) or a safety loop fault is detected, the module immediately generates a safe stop command, preferentially cuts off the inverter power output through the hardware circuit, executes the corresponding safe stop category action (category 0/1), and feeds back the safety status signal to the main control unit at the same time.
