10311/2/1 | Honeywell Dual Key Switch Module

Product Overview

The Honeywell 10311/2/1 is a Dual Key Switch Module for the Honeywell FSC (Fail Safe Control) system. It provides two independent key-operated switches for manual control of critical safety functions, such as emergency shutdown (ESD) activation and system mode selection, ensuring authorized personnel can initiate safety actions.

Key Specifications

• Model Number: 10311/2/1
• Product Type: Dual Key Switch Module
• Series: Honeywell FSC (Fail Safe Control)
• Switches: 2 independent key switches
• Function: Manual safety control and ESD activation
• Space Requirements: Standard FSC special function module format
• Section: 7-23 (Special Functions)
• Approvals: CE, TÜV, UL

Core Features

• Two independent key-operated switches for safety-critical control
• Key-removable in multiple positions for safety interlocking
• Rugged industrial-grade key switch mechanism
• Direct integration with FSC watchdog and ESD systems
• Tamper-resistant design prevents unauthorized operation

Applications

• Emergency shutdown (ESD) activation
• System mode selection (Run/Stop/Reset)
• Maintenance bypass control
• Safety system manual override
• Authorized personnel-only safety functions

FAQ

Q: What functions can be assigned to the key switches?
A: The key switches can be configured for ESD activation, system mode selection, maintenance bypass, or other safety-critical functions via FSC engineering software.

Q: Can the key be removed in different positions?
A: Yes, the key switches support key-removable positions for safety interlocking, preventing accidental mode changes.

Installation Guide

1. Power down the FSC system before installation.
2. Mount the module in an accessible location on the FSC rack or cabinet door.
3. Connect switch contacts to the appropriate FSC input modules.
4. Configure switch functions via FSC engineering software.
5. Test key switch operation in all positions before commissioning.

Selection Tips

• For single key switch applications, verify if 10311/1/1 is available.
• For ESD key switch integrated with watchdog horizontal bus, use 10005/O/2.
• Ensure key switches are mounted in easily accessible emergency locations.