Brand Name: ABB
Model Number: FSO-21
Description: Safety function modules
Supply Voltage: +24 ± 3 V DC (PELV)
Current Consumption: Maximum 1000 mA (external power supply)
Maximum Time Delay Between Redundant Input Channels: 300 ms
Maximum Test Pulse Tolerance: 2 ms
Warranty: 12 Months
Lead Time: In Stock
Shipping Terms: UPS / DHL / TNT / EMS / FedEx
Payment Method: T/T (Bank Transfer)
Service: One-Stop Service

The ABB FSO-21 Safety Function Module is a dedicated functional safety interface module for ABB ACS880 (and DCS880) industrial drives that enhances machine safety by providing multiple built-in safety functions. Installed inside the drive, the FSO-21 enables safety-critical control such as Safe Torque Off (STO), Safe Stop, Safe Direction, and Safe Speed Monitoring, helping protect personnel and equipment in automated systems. It supports integration with safety PLCs via PROFIsafe over PROFINET, and with optional encoder feedback (via FSE-31) it can extend safe functionality to direction/monitoring functions.

Frequently asked questions：

Q1: What is the ABB FSO-21 Safety Function Module used for?
A: The FSO-21 is a functional safety interface module for ACS880 drives that enables multiple safety functions such as STO, SS1, SLS, and SDI to protect people and equipment.
Q2: Which ABB drives are compatible with the FSO-21 module?
A: It is designed for use with ABB ACS880 and DCS880 series drives that support safety function extensions.
Q3: What safety standards does the FSO-21 meet?
A: The module is TÜV certified to meet SIL 3 and Performance Level e (PL e) requirements under IEC/ISO functional safety standards.

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1.We ship globally.

2.The fastest and most competitive service, regardless of size and weight.
3.We use fast and reliable global companies (UPS, DHL, FedEx, TNT, and DPD).
4.Provide express delivery services.
5.We can use the customer's shipping account to ship the goods.
6.Normal transportation time.
7.1 day in Hong Kong and Singapore.
8.1-2 days in Europe, the United States, and Canada.
9.Rest of World: 1-3 days.

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Schneider: 140 Series

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