Description

The HIMA BI01 SIS is a foundational Base Interface Module integral to the HIMA HIMax® and HIMatrix® families of Safety Instrumented Systems (SIS). This module serves as the critical communication and power interface between the system’s central processing modules and the various input/output (I/O) modules within the same baseplate. Its core function is to manage the data exchange, provide isolated power distribution, and facilitate the internal diagnostics that are paramount for a high-integrity safety controller. The HIMA BI01 SIS is engineered to meet the rigorous demands of SIL 3 (Safety Integrity Level 3) and AK 6 applications as defined by IEC 61508 and IEC 61511 standards, ensuring the highest level of functional safety and operational reliability.

Acting as the central nervous system of the baseplate, the HIMA BI01 SIS module eliminates the need for complex internal wiring by managing all communications between modules via a high-speed, fault-tolerant serial bus. This design significantly reduces potential failure points and simplifies system architecture. The value of the HIMA BI01 SIS lies in its ability to enhance the overall availability and diagnostic coverage of the safety system. By continuously monitoring the health and status of all connected I/O modules and itself, it enables predictive maintenance and provides clear fault indications, allowing for swift remediation and minimizing the risk of spurious trips that can lead to costly plant shutdowns.

BI01 SIS

Technical Specifications

Parameter Name	Parameter Value
Product Model	BI01
Manufacturer	HIMA
Product Type	Base Interface Module for Safety Instrumented System (SIS)
Application Safety Level	SIL 3 (IEC 61508/61511), AK 6 (DIN V 19250)
Function	Baseplate communication controller and power distributor
Internal Communication	High-speed, serial, fault-tolerant bus
Power Supply	5 VDC from the central power supply module via backplane
Power Distribution	Provides isolated power to all I/O modules on the baseplate
Diagnostics	Continuous self-diagnostics and monitoring of module status
Fault Detection	Detects and reports faults in the baseplate communication
Compatibility	HIMax and HIMatrix series baseplates and I/O modules
Operating Temperature	-40°C to +70°C (-40°F to +158°F)
Relative Humidity	5% to 95%, non-condensing
Safety Certifications	TÜV Rheinland certified

Main Features and Advantages

The HIMA BI01 SIS module is designed with several key features that underscore its critical role in functional safety. Its primary advantage is the facilitation of a completely modular and flexible I/O configuration. By handling all baseplate communications, the BI01 SIS allows users to mix and match different types of digital and analog I/O modules on a single baseplate to precisely match the application’s requirements without worrying about internal wiring logistics. This offers tremendous flexibility during both the initial system design and any future expansion or modification projects.

Furthermore, the module is built for unparalleled reliability and diagnostic coverage. It features comprehensive self-monitoring to detect internal faults and continuously verifies the integrity of communication with all other modules on the baseplate. This high level of diagnostics is a core requirement for achieving SIL 3 certification, as it ensures that over 99% of dangerous failures are detected. The robust design of the HIMA BI01 SIS, coupled with its wide operating temperature range, makes it suitable for installation in harsh industrial environments, from freezing arctic conditions to hot desert climates, ensuring continuous protection for people, processes, and the environment.

Application Field

The HIMA BI01 SIS is deployed exclusively in safety-critical applications across a wide range of high-hazard industries where the failure of a control system could have catastrophic consequences. In the oil and gas sector, the HIMA BI01 SIS is a key component in Emergency Shutdown (ESD) and Fire and Gas (F&G) systems on offshore platforms, onshore refineries, and pipeline compressor stations. In the chemical and petrochemical industries, it is used in Burner Management Systems (BMS) for furnaces and boilers and in process shutdown systems for reactors and distillation columns.

The module is also critical in power generation, providing protection for gas and steam turbines, and in pharmaceutical manufacturing where batch processes require high-integrity safety interlocks. The HIMA BI01 SIS is engineered for applications that demand the highest reliability and the fastest response times. By forming the backbone of the baseplate’s communication, it ensures that safety-critical signals from field sensors are processed without delay and that output commands to final elements like valves and circuit breakers are executed reliably to bring a process to a safe state during a potentially dangerous operational deviation.

BI01 SIS

Related Products

HIMA C01 SIS: A central processing unit module that executes the safety logic, working in conjunction with the BI01 SIS module.

HIMA AI01 SIS: An analog input module that interfaces with 4-20mA field sensors, requiring the BI01 SIS for baseplate communication.

HIMA DI01 SIS: A digital input module for connecting contact-type signals, which communicates via the BI01 SIS base interface.

HIMA DO01 SIS: A digital output module for controlling solenoid valves and other final elements, dependent on the BI01 SIS.

HIMA PS01 SIS: A power supply module that provides primary power to the rack, which is then distributed by the BI01 SIS.

HIMA HIMax Rack: The physical baseplate and enclosure designed to host the BI01 SIS and other system modules.

HIMA T01 SIS: A communication module for interfacing with external systems like a DCS, which connects through the BI01 SIS.