Description

The Honeywell 10208/2/1 is a plug-and-play Relay Output Module designed for discrete switching, interposing control, and signal isolation within the Honeywell Fail Safe Control (FSC) system architecture. Operating as a dedicated I/O component, it bridges the controller's internal logic and field-level actuators, interposing relays, solenoid valves, or alarm circuits requiring dry contact switching.

The module features 10 output channels utilizing physical relay contacts. Built in a standard Eurocard form factor with space requirements of 4 TE, 3 HE (4 HP, 3U), the unit plugs directly into compatible FSC I/O backplanes via its rear card edge interface. Utilizing the 10xxx/2/x series plug-and-play architecture, the Honeywell 10208/2/1 features factory-defined mechanical key coding (Holes A9 and C17) to prevent incorrect module insertion and protect system wiring integrity.

Features

• 10 Isolated Output Channels: Provides 10 independent relay contact outputs for discrete switching and interposing control applications.
• Plug-and-Play Architecture: Belongs to the 10xxx/2/x hardware release series, supporting keyed insertion into system backplanes without hardwired rack-connector I/O loops.
• Mechanical Key Coding: Factory-assigned coding holes at positions A9 and C17 match corresponding rack pins (A9, C17) to prevent accidental insertion of incorrect module types.
• Compact Eurocard Form Factor: Requires 4 TE horizontal pitch (4 HP) and 3 HE vertical height (3U) within standard 19-inch FSC I/O racks.
• Reliable Contact Switching: Ideal for interposing loads, alarm horn/lamp signaling, and galvanic isolation between system logic and external control circuits.

Applications

• Interposing relay control for solenoid valves, motor starters, and contactors.
• Field signal isolation and potential-free dry contact switching.
• Annunciator, alarm horn, and status lamp drive circuits.
• Emergency shutdown (ESD) auxiliary switching and process interlocking interface.

Technical Specifications

Installation Guidelines

1. Pre-Installation Inspection: Visually inspect the module for physical damage. Ensure the SOURIAU 5159 coding holes at positions A9 and C17 are clean and undamaged.
2. Rack Verification: Confirm that the targeted slot on the I/O backplane (such as 10314/1/1 or 10315/1/1) is prepared with matching mechanical guide pins at A9 and C17. Never force a module into a slot if resistance is encountered, as this indicates a keying mismatch.
3. Power Down & ESD Precautions: Before inserting or removing modules, observe ESD safe handling practices. Ensure rack power supply conditions adhere to system maintenance procedures.
4. Insertion: Align the card edge guides carefully into the top and bottom rails of the 3U rack slot. Slide the module firmly inward until the rear connector seats fully into the backplane receptacle. Secure top and bottom retaining screws to ensure proper grounding and mechanical locking against vibration.
5. Field Termination: Ensure that interconnecting cables and Field Termination Assemblies (FTAs) or terminal blocks matched to the relay output channels are wired per project schematics before energizing load circuits.