Honeywell FC-BKM-0001 Battery And Key Switch Module

The Honeywell FC-BKM-0001 Battery And Key Switch Module is an essential accessory component designed for Honeywell’s Fail Safe Controller (FSC) and Safety System platforms. This module combines a reliable backup battery with a hardware key switch, providing crucial system-level functions including power backup, manual override control, and secure operational state management.

It enables operators to enforce system security and operational integrity by using a keyed switch to select system states (such as Run, Test, or Stop), while the internal battery provides backup power to retain critical volatile memory data during power failures. The FC-BKM-0001 plays an indispensable role in ensuring the availability, safety, and recoverability of safety-critical process applications.

This module is engineered for use in high-demand industries such as oil & gas, petrochemical, refining, power generation, pharmaceuticals, metals & mining, and pulp & paper, where functional safety, compliance, and plant uptime are mission-critical. The rugged design and certifications make it well-suited for harsh industrial environments and hazardous zones.

Product Specifications

Applications

• Manual control of FSC system operational modes (Run, Test, Stop)

• Backup power to retain volatile memory during system power outages

• Process safety systems in oil & gas (upstream, midstream, downstream)

• Emergency shutdown systems (ESD) for high-integrity plants

• Functional safety implementations in chemical manufacturing

• High-availability power generation plant safety systems

• Process safety for pharmaceutical manufacturing

• Mining and metals refining automation safety

• Pulp & paper process control and safety shutdowns

• Control systems requiring manual override security for auditability

Product Advantages

• Integrated battery and key switch: Combines two critical safety functions in a single module

• Enables safe, auditable mode switching: Provides hardware-based Run / Test / Stop control with physical key

• Ensures process memory retention: Backup battery maintains volatile data integrity during power outages

• Failsafe design: Certified for use in SIL-rated safety systems

• LED status indication: Provides clear feedback to operators and maintenance technicians

• Rugged industrial design: Performs reliably in high-vibration and temperature-extreme environments

• Flexible mounting: Supports DIN rail or panel installations for retrofit or new builds

• Wide industry usage: Proven in global installations across energy, chemicals, and industrial sectors

• Redundant power support: Works within 24 VDC redundant power architectures

• Certified for hazardous areas: Meets ATEX Zone 2 and IECEx compliance for global deployment

Frequently Asked Questions (FAQ)

1. What does the FC-BKM-0001 module do?

   It combines a backup battery for volatile memory retention with a secure manual key switch to select the FSC system operating mode.

2. How many positions does the key switch have?

   The key switch supports three positions: RUN, TEST, and STOP.

3. Is the battery rechargeable?

   Yes — the module includes an integrated rechargeable battery.

4. What happens to system data if the power fails?

   The internal battery ensures that volatile controller memory is retained during power failures.

5. Can this module be mounted on DIN rail?

   Yes — it supports both DIN rail and panel mounting.

6. Is the module suitable for hazardous areas?

   Yes — it is ATEX Zone 2 and IECEx certified.

7. Is the module compatible with FSC systems?

   Yes — it is designed specifically for Honeywell FSC (Fail Safe Controller) systems and works with Experion PKS.

8. How is module status indicated?

   Through LED indicators on the front panel for operator visibility.

9. Does it require an external power supply?

   It operates from standard 24 VDC system power.

10. What is the battery’s voltage?

    The battery operates at a nominal 3.6 VDC for memory retention.