Honeywell FC-PSU-UNI2450 Power Supply Unit
The Honeywell FC-PSU-UNI2450, also cataloged as the FC-PSU-UNI2450 Power Supply Unit, operates as a dedicated hardware component for regulated DC power distribution within Honeywell Safety Manager platforms. It converts wide-range AC utility power into stabilized 25 VDC or 28 VDC outputs to power system processing racks and safety-critical field loops.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | FC-PSU-UNI2450 |
| Brand | Honeywell |
| Origin | USA |
| Weight | 5.7 kg (Shipping Weight: 7.0 kg) |
| Dimensions | Standard Safety Manager power enclosure slot format |
| Operating Temp | -5 to +70 deg C |
| Power Consumption | 13 W at no load |
| Input Voltage | 110-240 VAC (47-63 Hz) |
| Output Voltage | 25 VDC setting (selectable 25 VDC or 28 VDC) |
| Efficiency | > 87% at 230 VAC |
| Hold-up Time | 100 ms at full load |
| Inrush Current | < 15 A |
| Ripple and Noise | < 40 mVpp |
| Approvals | CE, TUV, UL, CSA, CID2 |
4-20 mA HART Loop Protocol & Channel-to-Channel Isolation
The FC-PSU-UNI2450 incorporates dual overvoltage protection circuits and galvanic isolation between AC input mains, DC output rails, and chassis ground. Delivering ripple and noise levels below 40 mVpp, the unit provides clean DC potential to downstream I/O modules and field instrumentation. This low-noise, isolated power bus prevents mains transients from interfering with sensitive 4-20 mA HART analog loop measurement circuits and communication backplanes.
Frequently Asked Questions
Q: What output voltage options and protections are integrated into the FC-PSU-UNI2450?
A: The factory default setting is 25 VDC (configurable to 28 VDC), backed by dual redundant overvoltage protection logic to prevent voltage spikes from reaching connected system electronics.
Q: How long can the FC-PSU-UNI2450 maintain power output during an AC line interruption?
A: The unit features an integrated hold-up time of 100 ms at full rated load, ensuring uninterrupted system operation through brief line power dips.
Field Installation Guidelines
- Mount the power supply unit into its designated chassis rack position and verify that all enclosure grounding bonds are secured to the main earthing bar.
- Wire the 110-240 VAC input connections using properly rated conductors, ensuring an upstream circuit breaker is installed per electrical codes.
- Allow adequate vertical ventilation space around the module heat sinks to ensure natural thermal dissipation during high ambient temperature operation.
Honeywell FC-PSU-UNI2450 Power Supply Unit
Honeywell FC-PSU-UNI2450 Power Supply Unit
The Honeywell FC-PSU-UNI2450, also cataloged as the FC-PSU-UNI2450 Power Supply Unit, operates as a dedicated hardware component for regulated DC power distribution within Honeywell Safety Manager platforms. It converts wide-range AC utility power into stabilized 25 VDC or 28 VDC outputs to power system processing racks and safety-critical field loops.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | FC-PSU-UNI2450 |
| Brand | Honeywell |
| Origin | USA |
| Weight | 5.7 kg (Shipping Weight: 7.0 kg) |
| Dimensions | Standard Safety Manager power enclosure slot format |
| Operating Temp | -5 to +70 deg C |
| Power Consumption | 13 W at no load |
| Input Voltage | 110-240 VAC (47-63 Hz) |
| Output Voltage | 25 VDC setting (selectable 25 VDC or 28 VDC) |
| Efficiency | > 87% at 230 VAC |
| Hold-up Time | 100 ms at full load |
| Inrush Current | < 15 A |
| Ripple and Noise | < 40 mVpp |
| Approvals | CE, TUV, UL, CSA, CID2 |
4-20 mA HART Loop Protocol & Channel-to-Channel Isolation
The FC-PSU-UNI2450 incorporates dual overvoltage protection circuits and galvanic isolation between AC input mains, DC output rails, and chassis ground. Delivering ripple and noise levels below 40 mVpp, the unit provides clean DC potential to downstream I/O modules and field instrumentation. This low-noise, isolated power bus prevents mains transients from interfering with sensitive 4-20 mA HART analog loop measurement circuits and communication backplanes.
Frequently Asked Questions
Q: What output voltage options and protections are integrated into the FC-PSU-UNI2450?
A: The factory default setting is 25 VDC (configurable to 28 VDC), backed by dual redundant overvoltage protection logic to prevent voltage spikes from reaching connected system electronics.
Q: How long can the FC-PSU-UNI2450 maintain power output during an AC line interruption?
A: The unit features an integrated hold-up time of 100 ms at full rated load, ensuring uninterrupted system operation through brief line power dips.
Field Installation Guidelines
- Mount the power supply unit into its designated chassis rack position and verify that all enclosure grounding bonds are secured to the main earthing bar.
- Wire the 110-240 VAC input connections using properly rated conductors, ensuring an upstream circuit breaker is installed per electrical codes.
- Allow adequate vertical ventilation space around the module heat sinks to ensure natural thermal dissipation during high ambient temperature operation.
