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The FC-BKM-0001 is a specialized utility module within the Honeywell Safety Manager system, combining two essential administrative and maintenance functions. It houses the system backup battery, which preserves the controller's...
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The FC-BKM-0001 is a specialized utility module within the Honeywell Safety Manager system, combining two essential administrative and maintenance functions. It houses the system backup battery, which preserves the controller's database and memory during power loss, and integrates a high-security key switch.
This physical key switch allows authorized personnel to override safety functions, change system modes (such as moving from 'Run' to 'Program'), or force outputs during controlled maintenance procedures while maintaining a strictly logged hardware-level access barrier.
| Specification | Details |
|---|---|
| Model Number | FC-BKM-0001 |
| Equipment Category | Battery Backup and Key Switch Interface |
| 24 V Supply Requirements | 24 Vdc (Range: –15% to +30%) |
| Current Consumption (24V) | 20 mA maximum; 7 mA typical (shared load) |
| 5 V Logic Supply | 5 Vdc ± 10% (10 mA max current) |
| Output Characteristics | 14—31 Vdc output supply voltage |
| Output Impedance | Approximately 2 × 1.1 kΩ (parallel configuration) |
| Fault Protection | Continuous short-circuit proof architecture |
| Operating Temperature | –5°C to +70°C (+23°F to +158°F) |
| Physical Proportions | 176 mm x 35.2 mm x 212 mm (H x W x D) |
| Unit Weight | 0.5 kg |
The FC-BKM-0001 is vital for the long-term integrity of Safety Instrumented Systems (SIS).
Battery Function: Prevents the loss of critical safety logic configurations during extended outages.
Key Switch Function: Provides a non-software-based security layer. Requiring a physical key to enable write-access or bypasses prevents accidental or unauthorized remote modifications to the safety strategy.
This module is standard in Emergency Shutdown (ESD) and Fire and Gas (F&G) racks where operational security is paramount.
Q: How often should the battery in the FC-BKM-0001 be replaced?
A: Honeywell typically recommends a battery replacement cycle based on the ambient operating temperature, usually every 2 to 5 years, to ensure the RAM memory of the safety processor remains protected during power cycles.
Q: What system modes are controlled by the key switch?
A: The key switch on the FC-BKM-0001 is generally used to switch the Safety Manager controller between 'Run' (normal operation), 'Stop', and 'Service/Program' modes, enabling or disabling the ability to download new logic.
