FC-BKM-0001 Honeywell Battery and Key Switch Module for Safety Control Systems
The FC-BKM-0001 is a Honeywell battery and key switch module. It pairs a backup battery with key switch logic for safety-related control racks. The module runs on 24 Vdc and provides a 14 to 31 Vdc output supply. It supports reverse polarity protection and continuous short circuit proof operation. The FC-BKM-0001 suits legacy Honeywell safety systems that need reliable backup and key-based mode control.
Operating Environment
- Operating temperature: -5 to +70 °C (+23 to +158 °F)
- Storage temperature: -40 to +85 °C (-40 to +185 °F)
- Relative humidity: 10 to 95 %, non-condensing
- Approvals: CE, TUV, UL, CSA, FM
Power Supply Ratings
- 24 V supply voltage: 24 Vdc -15% to +30%
- 24 V supply current: max. 20 mA per 24 Vdc rail
- Typical shared load: 7 mA on 24 Vdc
- 5 VR supply voltage: 5 Vdc ±10%
- 5 VR supply current: max. 10 mA
- Output supply voltage: 14 to 31 Vdc
- Output resistance: approx. 2 x 1.1 kΩ parallel
- Short circuit proof: continuous
Input Channel Data
- Input voltage high: 14 to 35 Vdc
- Input voltage low: below 7 Vdc, reverse polarity protected
- Input current: 2.3 mA at 24 Vdc
- Input filter IN1: typ. 0.1 ms
- Input filter IN2 and IN3: typ. 10 ms
Battery Specifications
- Battery make: SAFT
- Recommended type: LS14500CGFG
- Alternative type: LS14500W
- Material: Lithium Thionyl Chloride
- Nominal voltage: 3.6 V
- Capacity: more than 2 Ah
- Size: AA
- Operating temperature: -40 to +85 °C (-40 to +185 °F)
Physical Data
- Dimensions: 176 x 35.2 x 212 mm (H x W x D)
- Dimensions in inches: 6.93 x 1.4 x 8.35 in
- Weight: 500 g
Oiltech Controls Insight
The FC-BKM-0001 fits Honeywell safety control platforms that use key switch mode selection. The lithium thionyl chloride battery holds memory during power loss. The 14 to 31 Vdc output drives field devices with stable voltage. The continuous short circuit proof design protects the module in fault conditions. This unit is a practical spare for aging safety racks and discontinued Honeywell panels.
Suitable Equipment
- Honeywell safety control racks
- Legacy burner management systems
- Emergency shutdown panels
- Key-operated mode selector cabinets
- Process safety skids with battery backup
- Discontinued Honeywell FC series modules
Why Buy From Oiltech Controls?
- 15+ years of industrial automation spare parts sourcing
- Global shipment support for urgent breakdowns
- Tested surplus and refurbished options in stock
- 12-month warranty on every unit
- Technical verification before dispatch
- Support for obsolete control systems
Shipping and Warranty Terms
- Dispatch within 24 to 28 hours
- Shipping by Fedex, UPS, and DHL
- 12-month warranty covers functional defects
- Warranty void if the unit is opened or miswired
- Keep the original packing for warranty claims
FAQ
Q: Can I use a standard AA lithium battery in this module?
A: Not all AA cells are equal. Use SAFT LS14500CGFG or LS14500W. These cells use lithium thionyl chloride chemistry. They handle the -40 to +85 °C range and long standby needs.
Q: How do I know if my Honeywell rack supports this module?
A: Check the rack model and slot layout first. Confirm the 24 Vdc supply and key switch wiring. Ask for a compatibility note before you buy the FC-BKM-0001.
Q: What causes the output supply to drop below 14 Vdc?
A: Common causes include a weak battery, high output load, or bad wiring. The output range is 14 to 31 Vdc. Measure at the terminals under load. Replace the battery if voltage sags.
Q: Is the module protected against reverse polarity?
A: Yes. The low input state is reverse polarity protected. Low input is below 7 Vdc. This helps prevent damage from wiring mistakes during service.
Q: What should I check before buying a surplus FC-BKM-0001?
A: Confirm the exact model and connector type. Ask for a technical verification report. Check the 12-month warranty terms. Confirm the shipping method, such as Fedex, UPS, or DHL.
Contact us at info@oiltechcontrols.com or +86 158 8020 0923.
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