HIMA F8650E Safety System Module Central Processing Unit

Product Overview and Core Function
The HIMA F8650E serves as a central safety system module for critical process applications. As a result, it provides reliable shutdown and protection functions for industrial plants. Specifically, this CPU uses two clock-synchronized microprocessors for maximum safety integrity. Consequently, the HIMA F8650E meets the highest safety standards for emergency shutdown systems.

Key Technical Parameters and Processor Architecture
The HIMA F8650E features two INTEL 386EX microprocessors operating at 32 bits. For instance, the clock frequency runs at 25 MHz for both CPUs. Each microprocessor contains 1 MB of Operating System Flash-EPROM. Similarly, each CPU includes 1 MB of User Program Flash-EPROM. In addition, each microprocessor has 1 MB of Data SRAM memory. Therefore, the degree of utilization depends on the operating system version.

Power Requirements and Electrical Specifications
The HIMA F8650E requires a 24 VDC power supply for normal operation. The typical current consumption is 500 mA under standard load conditions. However, the module can draw up to 2000 mA (2 A) during peak operation. The internal operating voltage uses 5 V at 2 A for the PCBs. Consequently, ensure your power supply can handle these requirements.

Safety Features and Watchdog Function
This module includes a safety-related watchdog for fault monitoring. For example, the watchdog provides a 24 V output rated for up to 500 mA. This output is short-circuit proof for reliable operation. Shutdown on fault occurs automatically when the watchdog triggers. As a result, the HIMA F8650E ensures safe system behavior during critical failures.

Interfaces and Communication Ports
The HIMA F8650E offers two serial interfaces for communication. Specifically, both interfaces use RS 485 protocol with electric isolation. Therefore, these ports resist ground loops and electrical noise. The isolated design improves signal integrity in industrial environments. Consequently, you can connect the module to other safety devices reliably.

Diagnostic Display and User Interface
A four-digit matrix display provides diagnostic information on the front panel. For instance, this display shows selectable information about system status. You can choose which parameters to view during operation. The diagnostic display helps troubleshoot issues quickly. As a result, maintenance staff can identify problems without external tools.

Mechanical Construction and Space Requirements
The HIMA F8650E uses two European standard PCBs for the core electronics. A separate PCB handles the diagnostic display functions. The space requirement is 8 SU (standard units) in a 19-inch rack. Consequently, plan your cabinet layout accordingly. The robust construction ensures reliable operation in industrial environments.

Installation Guide
Mount the HIMA F8650E in a suitable 19-inch rack with 8 SU space. First, ensure the power supply provides stable 24 VDC at 2 A capacity. Connect the two RS 485 interfaces to your safety network. Then, wire the watchdogs output to the shutdown circuit. Use proper shielded cables for the serial connections. Finally, verify the diagnostic display shows normal operation after power-up.

Complete Package Contents
HIMA F8650E Safety System Module CPU (1 unit)

Two INTEL 386EX 32-bit microprocessors (pre-installed)

Operating system Flash-EPROM (1 MB per CPU)

User program Flash-EPROM (1 MB per CPU)

Data SRAM (1 MB per CPU)

Two RS 485 serial interfaces with electric isolation

Four-digit matrix diagnostic display

Safety watchdog with 24 V / 500 mA output

Two European standard PCBs

One diagnostic display PCB

Frequently Asked Questions (FAQ)
1. What processors are used in the HIMA F8650E safety module?
The HIMA F8650E uses two INTEL 386EX 32-bit microprocessors. Therefore, they run in clock-synchronized mode for safety.

2. What is the clock frequency of this CPU module?
The clock frequency is 25 MHz for both microprocessors. Consequently, the module provides balanced processing power.

3. What power supply does the HIMA F8650E require?
It requires 24 VDC at 500 mA typical or 2000 mA maximum. The internal logic uses 5 V at 2 A.

4. What communication interfaces does this module provide?
The module includes two RS 485 serial interfaces. Specifically, both interfaces have electric isolation for noise immunity.

5. What is the watchdog output specification on the HIMA F8650E?
The safety watchdog provides a 24 V output rated for 500 mA. This output is short-circuit proof for reliable safety shutdowns.