HIMA H4135 Safety Logic Solver (992413502)

The HIMA H4135 (order number 992413502) is a versatile and compact safety logic solver belonging to the HIMatrix family of programmable safety systems. Designed to meet the requirements of SIL 3 (IEC 61508) and PL e (ISO 13849-1), it integrates a powerful fail-safe CPU, a complement of onboard I/O channels, and multiple communication interfaces into a single, DIN-rail mountable housing. This all-in-one design simplifies engineering, reduces wiring, and minimizes panel space, making it ideal for skid-mounted equipment, packaged machinery, and small-to-medium process safety functions.

Key Features

• Compact All-in-One Unit: Includes CPU, fail-safe I/O, and communication ports, eliminating the need for separate modules.

• SIL3 Certified: Suitable for safety instrumented functions up to SIL 3, with hardware fault tolerance and systematic capability.

• Integrated I/O: Typically 16 fail-safe digital inputs, 12 fail-safe digital outputs, and 4 analog inputs (configurable).

• Flexible Communication: Dual Ethernet ports (Modbus TCP, PROFINET, HIMA safe Ethernet), RS-485 (Modbus RTU), and optional PROFIBUS DP.

• Rugged Design: Extended temperature range (-20°C to +70°C), high vibration/shock resistance, and IP20 protection.

• Certified Function Blocks: Pre-certified software blocks for common safety functions (valves, motors, sensors) speed up application development.

Technical Specifications

• Power Supply: 24 VDC ±20%

• Digital Inputs: 16 (fail-safe, 24 VDC, type 3)

• Digital Outputs: 12 (fail-safe, 24 VDC, 0.5 A, short-circuit proof)

• Analog Inputs: 4 (4–20 mA or 0–10 V, 12-bit, fail-safe)

• Communication: 2× Ethernet (10/100), 1× RS-485 (Modbus RTU), 1× CAN

• Cycle Time: ≥ 10 ms

• Safety Integrity: SIL 3 (IEC 61508), PL e (ISO 13849-1), Category 4 (EN 954-1)

• Operating Temperature: -20°C to +70°C

• Certifications: TÜV Rheinland, CE, UL, ATEX (Zone 2)

Applications

The H4135 is widely used in process industries (chemical, petrochemical, pharmaceutical) for emergency shutdown (ESD), fire and gas detection (F&G), burner management (BMS), and high-integrity pressure protection (HIPPS). In machinery safety, it controls presses, robots, and automated production lines. Its compact size also makes it popular for OEMs integrating safety into their equipment, such as compressors, pumps, and turbines.

Configuration and Engineering

Engineering is performed using HIMA's SILworX software, which supports IEC 61131-3 programming languages (FBD, LD, ST) and includes a library of certified safety blocks. The tool offers comprehensive simulation, online monitoring, and version control. The H4135 can be integrated into a safety network with other HIMatrix or HIMax controllers using safe Ethernet protocols, enabling distributed safety architectures.

Reliability and Diagnostics

The H4135 features extensive onboard diagnostics, including processor self-test, I/O channel monitoring, and communication supervision. In the event of a fault, the outputs are driven to a predefined safe state and a diagnostic message is generated. The module's high MTBF (over 100,000 hours) ensures long-term reliability in continuous operation. Its robust construction withstands the harsh conditions of industrial environments.

With its integrated I/O, small footprint, and full safety certification, the HIMA H4135 (992413502) safety logic solver delivers powerful, cost-effective safety automation for a wide range of applications.