Description
Honeywell MC1AB37 4022.437.1856
Technical Specifications
- Product type: DCS rack power supply
- Input: AC120/240 V
- Output: DC5 V, DC12 V, DC24 V
- Rated current: Multiple voltage rails
- Redundancy: Dual power parallel
- Isolation: Input/output isolated
- Temperature: 0 °C to +60 °C
- Storage: -20 °C to +70 °C
- Humidity: 5 % to 95 %, non-condensing
- Protection: IP20
- Installation: Eurocard plug-in
- Certifications: UL, CE
Functional Features
- Multi-rail DC supply for TPS rack
- Dual power redundant parallel without interruption
- Input overvoltage, undervoltage monitoring
- Output overcurrent and short-circuit protection
- Front panel LEDs for power normal and fault
- AC input isolated from DC output
- Fault relay contact output
- Industrial-grade components
- Hot-swap online replacement
- Continuous DCS operation
Application Scenarios
- Honeywell TPS rack power
- Refinery DCS control rack supply
- Petrochemical TDC3000 system power
- Large chemical DCS redundant power
- Plant analog control unit supply
Materials and Construction
- Front panel: Metal panel
- PCB: FR4 board with conformal coating
- Power: Switching power modules, filter capacitors
- Relay: Fault alarm relay
- Connector: Gold-plated Eurocard
- Heat: Aluminum substrate power devices
Structural Features
- Eurocard plug-in in TPS rack power slot
- Front panel LEDs and fault relay contacts
- Board partitions between EMI filter, power conversion, output
- Power devices mounted on metal heat spreader
- Card locking mechanism
- Metal panel shielding
Working Principle External AC120/240 V after EMI filtering and rectification feeds a switching converter; a high-frequency transformer isolates and steps down, rectifying and filtering to DC5 V, DC12 V, DC24 V, delivered through backplane gold fingers to rack cards. Dual supplies current-share in redundancy. Monitoring circuits detect rail voltages; abnormalities trigger LEDs and relay contacts.
Installation Requirements
- Insert power slot with power off
- Connect AC input per drawing
- Dual supplies on independent AC loops
- Rack grounding
- Temperature 0 °C to +60 °C
- Verify input voltage after power-up
Precautions
- Confirm redundant other module before online replacement
- AC input voltage must not be wrong
- Do not overload
- Store spares in moisture-proof packaging
- Periodically check output voltage
- After replacement confirm power status from CPU software
