Foxboro P0912RH Product Specification Document
Foxboro P0912RH belongs to I/A P0912 series rack-mounted hot-swap switching power supply, ultra-wide low/high temperature enhanced version upgraded based on P0912RG, customized for alpine frigid areas, desert high-temperature & coastal salt fog severe working conditions. Equipped integral thickened cast aluminum heat dissipation shell, full six-layer PCB conformal coating plus G3+ enhanced anti-corrosion electrophoresis treatment, nine-level EMI filtering and dual-stage lightning surge absorption circuit, stronger anti-salt mist and extreme temperature adaptability than RD/RG models. Fully compliant with I/A backplane hot-plug standard, supports live plugging without cutting cabinet AC main power; front panel sets independent LED indicators for input power, normal output, overload, overtemperature and hardware fault, transmits real-time running data and fault diagnostic codes to DCS workstation via backplane bus.
Description
Foxboro P0912RH Product Specification Document
1. Product Introduction
Foxboro P0912RH belongs to I/A P0912 series rack-mounted hot-swap switching power supply, ultra-wide low/high temperature enhanced version upgraded based on P0912RG, customized for alpine frigid areas, desert high-temperature & coastal salt fog severe working conditions. Equipped integral thickened cast aluminum heat dissipation shell, full six-layer PCB conformal coating plus G3+ enhanced anti-corrosion electrophoresis treatment, nine-level EMI filtering and dual-stage lightning surge absorption circuit, stronger anti-salt mist and extreme temperature adaptability than RD/RG models. Fully compliant with I/A backplane hot-plug standard, supports live plugging without cutting cabinet AC main power; front panel sets independent LED indicators for input power, normal output, overload, overtemperature and hardware fault, transmits real-time running data and fault diagnostic codes to DCS workstation via backplane bus.
2. Basic Information
Original US Foxboro part No.: P0912RH, passed UL508 industrial safety certification & CE EMC certification. Wide-range AC input:85～264VAC,47～63Hz; rated 24VDC output power 390W; overall dimension 172mm×166mm×52mm, net weight approx 1.25kg. Supply options: original factory new sealed spare parts and full-load aging tested refurbished modules with 12-month global warranty; full pin-to-pin interchangeable with P0912QA~QV, RD, RG full-series power supply, P0912LA/LB auxiliary backup power, P0912MP redundant cable and all FBM series analog/digital I/O modules, direct plug into standard I/A rack backplane without any adapter modification.
3. Function and Positioning
Positioned as extreme environment dedicated medium-power main power supply for partial-slot configured I/A DCS and SIS safety cabinet in high-low temp, coastal salt fog industrial sites:
Provide high-stability regulated 24VDC power for sparsely arranged FBM I/O cards, dual redundant controllers and cabinet backplane bus of medium-scale DCS rack;
Integrate complete overvoltage, overcurrent, short-circuit and overtemperature lockout protection, avoid cascading burnout of post-stage I/O modules caused by field cable short-circuit failure;
Support multi-unit redundant parallel hot standby operation, non-disturbance automatic load switching upon single module fault to guarantee uninterrupted power supply of core SIS interlock loops;
Upload real-time output voltage, operating current, internal core temperature and fault alarm codes to upper DCS host via backplane bus for remote centralized monitoring and pre-fault early warning;
Full input-output galvanic isolation structure suppresses grid surge, harmonic and coastal salt fog induced interference, improves analog sampling precision and overall system stability under harsh site conditions.
4. Core Performance Parameters
AC input:85～264VAC,47～63Hz; DC rated output:24VDC±0.3%, max continuous output current 16.25A; output ripple ≤55mVpp. Extreme wide operating ambient temp:-30℃～+65℃, storage temperature:-45℃～+85℃; relative humidity 5%～95%RH non-condensing, cabinet installation protection grade IP20. Protection threshold: overvoltage lock 26.5VDC, overload protection trigger at 101% rated load, overtemperature auto-shutdown at 68℃; EMC complies with IEC61000-6-2 industrial standard, passes 600h neutral salt spray test; factory mandatory ≥72h full-load continuous burn-in test before factory delivery.
5. General Adaptable Accessories
Standard installation fittings: rack fixing screws, AC insulated wire terminals, cabinet shockproof gaskets, front indicator dustproof baffle; maintenance spare parts: thickened radiator filter cotton, replacement LED indicator group, input terminal insulating protective cap; compatible matching hardware: full P0912Q/RD/RG series main power supply, P0912LA/LB auxiliary backup power, P0912MP redundant debugging cable, all FBM200 series I/O modules, original I/A standard backplane; diagnosis tool: Foxboro I/A configuration software for online power parameter reading & fault troubleshooting; optional accessory: lengthened AC wiring terminal block for old cabinet reconstruction wiring upgrade.
6. Applicable Equipment Fields
Core applicable industries: alpine cold-region petrochemical DCS cabinet, desert high-temperature coal-fired power plant desulfurization/denitrification control rack, coastal offshore fine chemical & onshore oilfield SIS safety cabinet, northern frigid zone outdoor heat-preserved sewage treatment control cabinet. Main deployment scenarios: DCS cabinet equipped with 8~17 slots partially populated FBM I/O; coastal & alpine SIS safety cabinet prioritizes dual redundant P0912RH configuration; high-temperature desert outdoor sealed control cabinet standard matching power module.
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