Honeywell FC-IOCHAS-0002S I/O Chassis Assembly

Robust Backplane for Critical Control Systems

The Honeywell FC-IOCHAS-0002S provides a rugged mechanical and electrical foundation for housing I/O modules in demanding industrial environments. This 19-inch rack-mountable chassis serves as the central backplane for Safety Manager and Experion PKS systems. Its design supports up to eighteen non-redundant I/O modules or nine redundant pairs . The assembly includes a sturdy metal frame with clearly numbered slots for straightforward module installation.

Furthermore, the Honeywell FC-IOCHAS-0002S chassis integrates seamlessly with Honeywell’s FSC (Fail-Safe Control) and Safety Manager A.R.T. platforms. It routes internal power rails and high-speed communication buses between installed components . The backplane uses controlled PCB routing to minimize electromagnetic interference and signal crosstalk. Consequently, engineers can build scalable and reliable safety instrumented systems with deterministic performance.

Detailed Technical Specifications

Parameter	Specification
Model Number	FC-IOCHAS-0002S
Manufacturer	Honeywell
Product Type	I/O Chassis Assembly
Chassis Configuration	Non-redundant (Single-channel)
Backplane Slots	18 for standard I/O modules; 2 dedicated for IO-0002 extenders
Module Support	Analog and digital non-redundant I/O units
Dimensions (W x H x D)	482.6 mm x 222.4 mm x 280 mm (19 in x 8.75 in x 11 in)
Weight	8.7 kg (19.2 lbs)
Operating Temperature	0°C to +70°C
Storage Temperature	-40°C to +85°C
Relative Humidity	5% to 95% (non-condensing)
Mounting	Standard 19-inch rack or cabinet installation

Power Distribution and Connectivity

The chassis distributes power through dedicated backplane connectors to each installed module . Pre-installed IO-0002 extender modules occupy slots 20 and 21, drawing 100 mA each from the 5V-1 and 5V-2 supply rails respectively . The Honeywell FC-IOCHAS-0002S supports dual 24 VDC inputs for critical applications, with each input rated at 1.5 A . Slot 19 features a fixed blind front covering an internal board for horizontal I/O bus transfer .

Installation and Environmental Compliance

This chassis supports hot-swappable module replacement to minimize system downtime . Its industrial-grade coating protects against corrosive atmospheres and ensures long-term reliability. Additionally, the FC-IOCHAS-0002S carries key safety certifications including CE, UL, CSA, TÜV, and FM, confirming its suitability for global installations . The assembly uses passive power routing and natural convection airflow for cooling, which reduces maintenance requirements . Professional engineers often choose this robust assembly for refinery safety loops, offshore ESD systems, and chemical reactor control applications.