The Honeywell FC-BKM-0001 (Version CC V1.1) is a specialized Battery and Key Switch Module engineered for the Honeywell Fail-Safe Control (FSC) and Safety Manager platforms. This module performs two critical infrastructure functions: maintaining system memory during power interruptions and providing hardware-level security via a physical key switch. The "CC" designation signifies that the module is Conformal Coated, providing essential protection for internal circuitry against humidity, salt air, and corrosive gases common in industrial environments.
As a core component of SIL 3-capable safety systems, the FC-BKM-0001 ensures the integrity of the safety application and diagnostic data. The battery sub-assembly provides redundant backup power to the system's volatile memory, preventing the loss of critical safety parameters during a total power failure. Simultaneously, the integrated key switch serves as a physical interlock to control access levels (e.g., Run, Program, or Force), ensuring that only authorized personnel can modify safety-critical logic. With a wide operating temperature range and comprehensive global approvals (CE, TUV, UL, CSA, FM), this module is a standard requirement for high-availability safety controllers in the oil and gas, petrochemical, and power sectors.
| Feature | Specification Details |
| Manufacturer | Honeywell |
| Model Number | FC-BKM-0001 |
| Hardware Version | CC V1.1 (Conformal Coated) |
| Primary Function | Memory Backup and System Mode Security |
| 24 V Supply Voltage | 24 Vdc (–15% to +30%) |
| 24 V Supply Current | Typ. 7 mA (Shared load); Max. 20 mA |
| 5 VR Supply Voltage | 5 Vdc ± 10% |
| Output Supply Voltage | 14—31 Vdc (Continuous short-circuit proof) |
| Output Resistance | 2 × 1.1 kΩ (Parallel) |
| Operating Temperature | –5°C to +70°C (+23°F to +158°F) |
| Storage Temperature | –40°C to +85°C (–40°F to +185°F) |
| Relative Humidity | 10—95% (Non-condensing) |
| Dimensions (H x W x D) | 176 × 35.2 × 212 mm |
| Weight | 0.5 kg (Shipping weight: 2 kg) |
| Approvals | CE, TUV, UL, CSA, FM |
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