Deep Analysis of HIMA HIMax Safety Control System: Architecture, Redundancy, and Engineering Application Guidelines

Initial value: All variables that receive values from physical inputs or communications must be assigned an initial value as a safe value.

5.3 Online modification

Reload: Load modified project configurations without interrupting security related operations. This includes changing user program logic, parameters, etc., provided that the overload conditions are not violated (such as adding new variable assignments that typically require a download).

Forcing: allows replacing the current value of a variable with a forced value, used for testing programs. Attention: Forcing values may result in output errors and prolong cycle time, and must be authorized by the testing agency and used within time limits.

6. Diagnosis and maintenance

6.1 Diagnosis of LED indicator lights

The LED on the front panel of the module provides a quick overview of the system status:

Module status: RUN (green), ERROR (red), STOP (yellow), Initiat (yellow).

Redundancy status: ESS (yellow, critical module), RED (yellow, running redundantly).

System bus: Display the connection status with buses A and B (green indicates normal, flashing indicates fault).

Maintenance instructions: Force, Test, Prog.

6.2 Diagnostic History Record

Each HIMax module maintains a historical record of faults or events, divided into:

Short term diagnosis: Circular buffer, new entries overwrite old entries.

Long term diagnosis: Store user actions and configuration changes. If the entry exceeds 3 days, the new entry will overwrite the old entry; If it does not exceed 3 days, the new entry will be rejected and marked.

6.3 Temperature Monitoring

The module monitors its own temperature. The state variables display the following range:

Normal:<40 ° C

Threshold 1 exceeds: 40... 60 ° C

Threshold 2 exceeds:>60 ° C

7. Lifecycle Management: Installation and Startup

7.1 Installation and Grounding

Mechanical installation: The base plate is installed in the control cabinet, ensuring sufficient heat dissipation (it is recommended to use a fan bracket).

Grounding (PE): Functional grounding must be implemented for electromagnetic compatibility (EMC). All surfaces of HIMax components (except for pluggable modules) are conductive and must be connected to the cabinet frame through a grounding wire (such as a 16mm ² or 25mm ² yellow green wire).

7.2 Startup Process

Hardware installation: Complete all module and cable connections.

Set IP and SRS: Log in to the system bus module and processor module through SILworX, and set the System. Rack. Plot address and IP address.

Load project: Execute Download or Reload.

Start running: Set the mode switch to RUN.

7.3 Maintenance and Repair

Preventive maintenance: It is recommended to regularly replace the controller fan.

ESD protection: Only personnel with knowledge of ESD (electrostatic discharge) protection can replace modules.

Power redundancy: Supports the connection of two redundant 24 VDC power units, powered through terminals L1+/L1- and L2+/L2-.

8. System specifications and delineation

To ensure the rationality of project design, engineers need to comply with the following system boundary restrictions:

Number of resources (controllers): 1... 65534 per project

Number of baseboards: 1... 16 per resource

Processor modules: 1... 4

User program: 1... 32

Event definition: 0... 20000

I/O modules: 0... 200

SafeEthernet connection: 0... 255

Non volatile event buffer size: 5000 events

Model Supplement

X-BASE PLATE 10 01 

X-BASE PLATE 15 01 

X-BASE PLATE 15 02

X-BASE PLATE 18 01 

X-CPU 01 (processor module)

X-SB 01 (System Bus Module)

X-COM 01 (Communication Module)

X-AI 32 01

X-AI 32 02

X-AI 32 02 SOE

X-DI 16 01

X-DI 32 01

X-DI 32 02 (for proximity switch)

X-DI 32 03

X-DI 32 04

X-DI 32 04 SOE

X-DI 32 05 (for proximity switch)

X-DI 32 05 SOE

X-DI 64 01

X-CI 24 01

X-AO 16 01

X-DO 12 01

X-DO 12 02

X-DO 24 01

X-DO 24 02

X-DO 32 01

X-FTA AI 32 01 01

X-FTA DI 32 01 01

X-FTA DI 32 02 01

X-FTA DO 12 01 01

X-FTA DO 24 01 01

X-FTA 001 01

X-FTA 001 02

X-FTA 002 01

X-FTA 002 02

X-FTA 003 02

X-FTA 005 02

X-FTA 006 01

X-FTA 006 02

X-FTA 007 02

X-FTA 008 02

X-FTA 009 02

X-CB 008 01 

X-CB 008 02

X-CB 008 03 

X-CB 008 04