HIMA F8653E Product Introduction

1. Product Overview

The HIMA F8653E is a high-integrity safety controller module designed for use in HIMA’s HIMax safety-related control system—engineered to protect personnel, equipment, and the environment in critical process industries. As a core component of HIMax, which complies with the highest safety standards (IEC 61508 SIL 4), the F8653E is ideal for applications like emergency shutdown systems (ESD), fire and gas monitoring (F&G), burner management systems (BMS), and turbomachinery protection in oil & gas, petrochemical, power generation, and chemical industries.

This module integrates redundant processing logic, fault-tolerant communication, and robust diagnostics to ensure reliable operation even in harsh industrial environments. It works seamlessly with other HIMax modules (e.g., input/output cards, communication modules) to form a scalable safety system, supporting both small-scale standalone safety loops and large-scale distributed safety networks. Its design prioritizes “fail-safe” behavior—ensuring that any internal fault triggers a safe state for connected process equipment.

2. Technical Parameters (Table)

Category	Specification
Safety Integrity Level (SIL)	Complies with IEC 61508 SIL 4 (system level); SIL 3 capable for single-module applications
Processing Core	Dual-core redundant CPU (32-bit); Clock speed: 400 MHz; Processing capacity: 10,000 safety-related function blocks
Memory	Program memory: 16 MB (flash); Data memory: 8 MB (SRAM, with battery backup); Configuration memory: 4 MB (non-volatile)
Input/Output (I/O) Compatibility	Supports digital/analog I/O modules via HIMax backplane; Max I/O count per system: 16,384 points
Communication Ports	Backplane: HIMax redundant backplane (1 Gbps); External: 2×Ethernet (10/100/1000 Mbps, for safety-related communication); Optional: Profinet IRT / Modbus TCP Safety
Diagnostic Coverage	≥99% for critical faults; Real-time self-tests (power supply, CPU, memory, communication)
Power Supply	Redundant 24 VDC input; Voltage range: 20–30 VDC; Power consumption: ≤15 W (per module)
Environmental Ratings	Operating temperature: -20°C to 60°C (-4°F to 140°F); Storage temperature: -40°C to 85°C (-40°F to 185°F); Humidity: 5%–95% (non-condensing, 40°C); Vibration: 5–150 Hz, 0.15 mm pk-pk (IEC 60068-2-6); Shock: 15 g, 11 ms (IEC 60068-2-27)
Physical Dimensions	Width: 32 mm (1.26 in); Height: 220 mm (8.66 in); Depth: 280 mm (11.02 in); Weight: ≤500 g (1.10 lbs)
Certifications	IEC 61508 (SIL 4); IEC 61511 (process industry safety); ATEX Zone 2 (Ex nA IIC T4 Ga); IECEx; UL 61010-1; CSA C22.2 No. 61010-1

3. Product Specifications & Features

3.1 Core Specifications

The HIMA F8653E is built to deliver maximum safety integrity for process industry applications. As a SIL 4-capable module (when integrated into the HIMax system), it meets the strictest safety requirements for high-risk processes—such as refinery crackers or chemical reactors—where a single fault could lead to catastrophic consequences. The dual-core redundant CPU ensures that processing logic is executed in parallel, with continuous cross-checks to detect discrepancies; if one core fails, the other immediately takes over to maintain safe operation.

In terms of scalability, the module supports up to 16,384 I/O points per HIMax system, making it suitable for both small ESD loops (e.g., 10–20 I/O points for a single pump) and large distributed systems (e.g., 10,000+ I/O points for a refinery). The redundant 1 Gbps backplane enables fast data transfer between modules, while the 2×Ethernet ports support safety-related communication with other control systems (e.g., DCS) via protocols like Modbus TCP Safety—ensuring that safety data is transmitted without delay or corruption.

The module’s diagnostic coverage of ≥99% means that nearly all critical faults (e.g., CPU errors, memory corruption, power supply issues) are detected in real time. When a fault is identified, the module triggers a predefined safe state (e.g., closing valves, stopping pumps) and sends an alarm to the operator, minimizing risk and reducing downtime for fault resolution.

3.2 Key Features

4. Other HIMA Safety Products

HIMA offers a comprehensive range of safety-related controllers, modules, and systems to complement the F8653E, including: