Overview
Manuals
Localized Safeguarding
How It Works
Features:
- Remote Universal Safe Logic Solver (32 channels, 24 Vdc)
- It needs to be placed on an IO Termination Assembly (IOTA)
- The RUSLS-3224 module supports two (100Mbaud) ethernet links to communicate with a SM Controller
The RUSLS-3224 module has 32 universal safe IO channels with configurable channel function; configuration is done in Safety Builder. The user can assign execution of application logics to the RUSLS-3224 module for one or more related FLDs; this is called logic solving. Configuration of logic solving is done in Safety Builder. The RUSLS-3224 module can be used in applications up to SIL 3, in compliance with IEC 61508/61511.
It requires two RUSLS-3224 modules to achieve a redundant configuration. All channels are powered out of the 24Vdc supply. Each channel can be configured as: Digital input (with or without loop monitoring); Digital output (with loop monitoring); Analog input (0-20mA or 4-20mA active); Analog output (0-20mA or 4-20mA active).
The FC-RUSLS-3224 Honeywell Universal IO modules may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
Honeywell FC-RUSLS-3224 Universal IO modules Manuals(Datasheets), Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
A key feature of the FC-RUSLS-3224 is its ability to execute application logic (functional logic diagram or FLD) directly on the module.
- Autonomous Operation: It continues to provide security and control even if communication with the main safety manager controller is interrupted or the controller itself is shut down.
- Edge Processing: Ideal for remote or distributed sites requiring immediate localized security responses, without relying on network latency or central processing unit availability.
- System Integrity: Commonly used in high-risk applications within Safety Instrumented Systems (SIS), such as:
- Emergency Shutdown (ESD): Immediate isolation of process units.
- Fire and Gas (F&G) Detection: Localized alarm and suppression triggering.
- Burner Management System (BMS): Independent fuel cut-off control.
The FC-RUSLS-3224 is based on a "1oo2D (two-in-one with diagnostics)" built-in redundant processor architecture and Software-Defined Channel (SDC) technology. At the physical layer, each channel is configured with microprocessor-controlled switchable impedance matching and signal shaping circuitry, allowing for real-time adjustment of the channel's electrical characteristics based on configuration definitions (e.g., switching to constant current source sampling, current-driven output, or dry contact voltage monitoring).
At the logic and diagnostic layers, the two processors within the module perform bidirectional data alignment and "cross-comparison detection" via a dedicated internal communication link. When a physical signal (e.g., pressure transmitter current) is input to a channel, both processors simultaneously perform local embedded safety logic calculations and continuously initiate high-speed pulse self-tests (including line loop monitoring and high/low-order diagnostics). If the dual-core comparison results are completely consistent and the diagnostics are correct, the processors will report to the system master controller via a dedicated protocol (SM RIO link) or directly drive the channel output actuator.
Once any processor detects an anomaly (such as a broken wire or short circuit) in its own, the other party's, or an external channel circuit, the module will immediately trigger a safety fault mechanism and enter a partial safety reversal state according to preset values, thereby ensuring the absolute safety of the entire system.
