ABB FSO-21 3AXD50000023987 Safety function modules

ABB FSO-21 3AXD50000023987 Safety function modules

Details of the module

Manufacturer: ABB
Part Number: 3AXD50000023987
Model: FSO-21
Type:Safety Function Module
Operating Ambient Temperature: 0°C to +55°C
Storage Temperature: −40°C to +85°C
Relative Humidity: ≤95% (non-condensing)
Category: SIL 3 / PL e
Diagnostic Coverage: High (system dependent)

The ABB FSO-21 Safety Function Module (Part No. 3AXD50000023987) is an advanced functional safety option 

module designed for use with ABB industrial drives, particularly the ACS880 series. It extends the drive’s built-in 

safety capabilities by enabling multiple configurable safety functions compliant with international safety standards. 

Installing the FSO-21 3AXD50000023987 module inside the drive provides a compact, reliable way to implement 

functional safety without requiring external safety relays or complex wiring.

Frequently asked questions：

Q1: What is the operating ambient temperature range of the ABB FSO-21 modules?
A1: They operate reliably between 0 °C and +55 °C.
Q2: What is the FSO-21 3AXD50000023987 storage temperature range?
A2: The modules can be stored safely between −40 °C and +85 °C.
Q3: What is the acceptable relative humidity for these modules?
A3: They support up to 95% relative humidity (non-condensing).
Q4: What is the FSO-21 3AXD50000023987 primary function of the FSO-21 safety function modules?
A4: They provide safety logic and monitoring functions in industrial automation systems to protect personnel 

and equipment.

Product Applications
Power Generation Plants
Oil & Gas Industry
Chemical & Petrochemical Plants
Water & Wastewater Treatment Plants
Steel & Metallurgy Industry

Key Features and Safety Functions
Standard Safety Functions: Includes Safe Torque Off (STO), Safe Stop 1 (SS1), Safe Stop Emergency (SSE), and 

Safe Brake Control (SBC).
Speed & Direction Monitoring: Provides Safely-Limited Speed (SLS), Safe Maximum Speed (SMS), Safe Speed 

Monitoring (SSM), and Safe Direction (SDI).
Connectivity: Supports PROFIsafe over PROFINET when used with fieldbus adapters like the FENA-21 or 

FPNO-21.
Configuration: Set up and diagnostics are handled via the ABB Drive Composer Pro PC tool.

Claim Your Extra Discount: Contact Sales Manager Lisa Lin for Details

:+86 18965423501     :sales7@amikon.cn     :AMKPLC

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