HIMA F3 DIO 20/8 02 | Remote I/O Module
Below is a product description for the HIMA F3 DIO 20/8 02:
Product Overview
The HIMA F3 DIO 20/8 02 is a safety-related remote I/O module designed for industrial automation applications. It is part of HIMA’s HIMatrix F-series, featuring 20 digital inputs and 8 digital outputs, housed in a compact metal enclosure. This module is equipped with advanced fault detection and line control mechanisms, ensuring high reliability and safety for safety-critical applications.
In automation setups, the F3 DIO 20/8 02 serves as a critical component of safety instrumented systems (SIS), connecting to safety controllers like HIMatrix or HIMax to extend the I/O capabilities of automation systems. It enables efficient data transfer and communication via SafeEthernet, supporting the expansion of input/output levels for automation systems. Its compact design and sturdy metal housing make it suitable for installation in control cabinets, saving space while ensuring stable operation.
The F3 DIO 20/8 02 boasts a SIL 3 safety rating and meets safety standards such as Cat. 4 and PL e (EN ISO 13849-1) and SIL 4 (EN 50126, EN 50128, EN 50129). It is TÜV-certified for safety-related applications, providing reliable protection for personnel, equipment, and the environment. With its high-performance features and robust design, the F3 DIO 20/8 02 is widely applicable in industries like manufacturing, energy, and transportation.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | F3 DIO 20/8 02 |
| Manufacturer | HIMA |
| Product Type | Remote I/O Module |
| Input Channels | 20 digital inputs (non-galvanically separated) |
| Input High Level Voltage | 15–30 VDC |
| Input High Level Current | ≥ 2 mA at 15 V |
| Input Low Level Voltage | Max. 5 VDC |
| Input Low Level Current | Max. 1.5 mA (1 mA at 5 V) |
| Switching Point | Typically 7.5 V |
| Input Power Supply | 5 × 20 V / 100 mA (at 24 V), short-circuit-proof |
| Output Channels | 8 digital outputs (non-galvanically separated) |
| Output Voltage | ≥ L+ minus 2 V |
| Output Current | Channels 1, 2, 3, and 5, 6, 7: 0.5 A up to 60 °C |
| Minimum Load | 2 mA per channel |
| Internal Voltage Drop | Max. 2 V at 2 A |
| Leakage Current | Max. 1 mA at 2 V |
| Overload Behavior | The affected output is switched off and cyclically switched on again |
| Total Output Current | Max. 7 A; upon overload, all outputs are switched off and cyclically switched on again |
| Ethernet Interfaces | 2 × RJ-45, 10BASE-T/100BASE-Tx with integrated switch |
| Operating Voltage | 24 VDC, -15…+20 %, rPP ≤ 15 % from a power supply unit with safe insulation in accordance with IEC 61131-2 |
| Current Input | Max. 8 A (with maximum load) |
| Idle Current | Approx. 0.4 A at 24 V |
| Fuse (External) | 10 A time-lag (T) |
| Operating Temperature | 0–+60 °C |
| Storage Temperature | -40–+85 °C |
| Protection Rating | IP20 |
| Dimensions | Width: 207 mm (with housing screws) |
| Weight | Approx. 1 kg |

Key Features and Benefits
The F3 DIO 20/8 02 offers 20 digital inputs and 8 digital outputs, meeting diverse application requirements. Its compact metal housing design simplifies installation and maintenance. The module can be connected to separate HIMax or HIMatrix controllers via SafeEthernet, enabling efficient data transfer and communication. Although it cannot run user programs independently, it effectively extends the I/O level of automation systems.
This module features advanced fault detection capabilities, including detection of cross-circuits, invalid connections, earth faults, and open circuits. Faults are indicated by the FAULT LED on the front panel, with error codes generated for precise fault identification. Its line control function helps detect short-circuits or open circuits and can be configured for critical safety functions like EMERGENCY STOP according to safety standards. Digital outputs DO 1 to DO 8 should be connected to the digital inputs DI of the same system.
The F3 DIO 20/8 02 is TÜV-certified for safety-related applications up to SIL 3 (IEC 61508, IEC 61511, and IEC 62061), Cat. 4 and PL e (EN ISO 13849-1), and SIL 4 (EN 50126, EN 50128, and EN 50129). It meets stringent safety requirements, making it suitable for applications where reliability and fault detection are critical.
Application Scenarios
In power generation facilities, the F3 DIO 20/8 02 serves as the backbone of turbine protection systems. It monitors critical parameters like vibration, temperature, and pressure, initiating protective shutdowns when thresholds are exceeded to prevent equipment damage and ensure compliance with safety regulations.
Within the chemical processing industry, the F3 DIO 20/8 02 provides reliable overpressure and overtemperature protection for reactors and storage vessels. Its fast response time and precision control help prevent hazardous situations that could lead to environmental incidents or production losses.
For oil and gas operations, the F3 DIO 20/8 02 is deployed in emergency shutdown systems (ESD) across production platforms, pipelines, and refineries. Its SIL 3 certification qualifies it for the highest levels of safety applications, protecting personnel, equipment, and the environment.
In discrete manufacturing, the F3 DIO 20/8 02 ensures machine safety by monitoring guard interlocks, emergency stops, and robotic operations. Its flexible configuration allows it to adapt to various machine layouts and production line requirements.
The F3 DIO 20/8 02 also finds applications in critical infrastructure, including water treatment plants and renewable energy systems. Its reliability and long-term support ensure that these essential services operate safely and efficiently over extended periods.
Related Models
F3 AIO 8/4 01 – Remote I/O module with 8 analog inputs and 4 analog outputs, complementing the F3 DIO 20/8 02 in mixed signal control systems.
F3 DIO 10/2 01 – Remote I/O module with 10 digital inputs and 2 digital outputs, suitable for smaller-scale control applications.
F3 DIO 16/16 01 – Remote I/O module with 16 digital inputs and 16 digital outputs, offering higher input/output capacity for complex control systems.
F3 DIO 8/8 01 – Remote I/O module with 8 digital inputs and 8 digital outputs, suitable for basic control tasks.
F3 DIO 20/8 01 – Previous generation model with similar functionality but reduced diagnostic capabilities.

Installation and Maintenance
When preparing for F3 DIO 20/8 02 installation, ensure the mounting location provides adequate ventilation and meets the module’s environmental specifications. The compact metal housing makes installation convenient, and the module can be mounted in control cabinets. Proper grounding is essential for electromagnetic compatibility and safety.
For maintenance, the F3 DIO 20/8 02 benefits from regular diagnostic checks using its built-in monitoring tools. These checks should occur quarterly to identify developing issues. The module’s software allows for straightforward firmware updates, which should be performed annually to maintain security and functionality. The typical replacement interval for the F3 DIO 20/8 02 is 10–12 years under normal operating conditions, though this may vary based on specific environmental factors.
Product Warranty
Xiamen Xiongba E-commerce Co., Ltd. provides a one-year warranty for the HIMA F3 DIO 20/8 02, covering manufacturing defects and ensuring product quality. Our global support network stands ready to assist with technical questions, replacement parts, and service requirements. We emphasize our commitment to customer satisfaction through responsive support and reliable product performance. Should any issues arise during the warranty period, our free replacement service ensures minimal downtime for your critical operations. We take pride in sourcing genuine HIMA components directly from authorized channels, guaranteeing authenticity and compatibility for all F3 DIO 20/8 02 installations worldwide.












