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Dpc / Power management

DUMC-4860 Equipment information & support

The DPC DUMC-4860 is a compact 2U 19-inch rack-mounted telecom DC power system converting utility AC to regulated -48VDC up to 60A continuous load for mission-critical telecom site infrastructure.

Equipment information

Brand
Dpc
Equipment model
DUMC-4860
Equipment type
Power management
Controller / software version
Confirm against the installed equipment
View full product specifications
DPC DUMC-4860 Official White Background Photo View 1

Information below comes from the current product catalogue. Confirm the controller, software version and configuration of the installed equipment separately.

AC Input Voltage Range
85VAC ~ 300VAC (Nominal 220VAC) VAC
Smart Monitoring Controller
DK04 LCD Monitoring Unit
Cooling Method
Forced Air Cooling
Nominal Output Voltage
-48VDC VDC
Rated Output Current
60A (System Capacity 3.48kW)
Managed Rectifier Capacity
2-Slot Configuration (Supports 2 × 30A / 1 × 50A)

Alarms & troubleshooting

DC_VOLT_LOW
CRIT Red LED solid, buzzer continuous tone
Prolonged mains outage depleting battery reserves below configured threshold, total rectifier failure, or extreme DC bus overload.
1. Inspect incoming AC supply and upstream breakers; 2. Measure actual DC bus voltage and total discharge current; 3. Verify rectifier operational state and reset if tripped; 4. Deploy backup generator or shed non-critical circuit feeds immediately.
RECT_COMM_FAIL
MAJ Yellow LED blinking
Internal CAN bus communication interruption between rectifier module and DK04 supervisor, loose backplane contact, or duplicate module ID addressing.
1. Unlatch and reseat the reported rectifier module; 2. Inspect backplane guide pins and connectors for dust, damage, or pin misalignment; 3. Check supervisor controller menu for assigned module slot IDs; 4. Swap to an adjacent slot to isolate backplane vs module MCU fault.
AC_OVER_VOLT
MAJ Yellow LED solid, rectifier module yellow LED flashing
Utility grid swell, lightning surge transient, or floating/disconnected AC neutral line causing phase voltage to exceed 300VAC shutoff threshold.
1. Measure AC input L-N line voltage with a True-RMS multimeter; 2. Inspect the upstream distribution box to verify neutral conductor continuity; 3. Inspect AC surge protective device (SPD) status window for fault indication; 4. Rectifiers auto-recover once grid voltage drops below 290VAC hysteresis point.
BATT_TEMP_HIGH
MAJ Yellow LED solid
HVAC failure in battery compartment, impending thermal runaway due to internal shorted cells, or open/shorted external NTC thermal probe wiring.
1. Scan the battery string with a thermal imaging camera to detect localized hotspots or bulging cells; 2. Check site HVAC cooling operation; 3. Disconnect and test NTC sensor resistance (nominal 10kΩ at 25°C); 4. If thermal runaway is present, lower system float voltage immediately and isolate degraded battery blocks.
BLVD_TRIP
CRIT Red LED solid, supervisor LCD displaying flashing alert
Battery string voltage dropped below safety disconnect threshold (typically 43.2VDC), prompting the magnetic contactor to open to prevent catastrophic cell destruction.
1. Confirm loss of utility grid or severe input feed failure; 2. Connect mobile diesel generator to the AC input terminals; 3. Once rectifiers energize and raise bus voltage above 48VDC, confirm BLVD contactor re-closure via controller menu; 4. Initiate manual or scheduled boost/equalize charge (56.4V) to restore battery capacity.

Access Complete Maintenance & Full Alarm Troubleshooting Manual

This page lists high-frequency critical alarm codes commonly encountered in field maintenance. Comprehensive manufacturer troubleshooting matrices, board-level repair guides, detailed electrical schematics, and firmware commissioning manuals are delivered alongside equipment upon formal project procurement, accompanied by dedicated FAE technical support.

Contact Account Manager for Full Manual

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