Emerson SolaHD S4K2U3000‑5C 3000VA Online Double‑Conversion UPS

Product Description

The S4K2U3000‑5C is a 3000VA / 2700W industrial online double‑conversion uninterruptible power supply manufactured by Emerson SolaHD. It adopts a compact 2U rack‑mount or tower convertible housing, rated at 230V AC input and output with 0.9 output power factor. Equipped with hot‑swappable sealed valve‑regulated lead‑acid batteries, it delivers pure sine‑wave output. The unit features built‑in noise suppression, PWM inverter and dynamic bypass circuit, designed for continuous stable operation in industrial cabinets, control rooms and network equipment environments. It is widely stocked as spare power backup hardware for automation and critical IT systems.

Product Functions

• Online double‑conversion topology provides zero transfer time backup when mains power fails, avoiding load interruption
• Regulate and filter input voltage, suppress surge, spike and electromagnetic noise to supply clean sine‑wave power to sensitive loads
• Hot‑swappable battery pack allows battery replacement without shutting down the protected equipment
• Built‑in automatic static bypass switches load directly to utility power during UPS internal overload or fault
• Support extended battery packs for longer backup runtime and automatic restart after power recovery
• Front‑panel LCD and LED indicators display input/output status, battery level, load percentage and fault alarms
• Communication interface supports remote monitoring, shutdown command and event logging for SCADA and network management systems

Application Scenarios

• Industrial automation control cabinets, PLC, DCS and process monitoring systems
• Factory robotics, packaging machinery and production line critical controllers
• Data center, server, network switch and communication equipment power protection
• Pharmaceutical, medical diagnostic and laboratory precision instruments
• Power plant, water treatment and oil & gas on‑site control panels
• Spare replacement and upgrade of aging Emerson SolaHD S4K2U‑5C series UPS units

Common Problems

• UPS transfers to battery mode frequently：mains voltage fluctuation, loose input power cable or damaged input connector
• Short backup runtime although mains charging is normal：aging internal batteries, capacity degradation or improper charging temperature
• Overload alarm activates constantly：connected load exceeds rated capacity or short‑circuit on output sockets
• Unit enters bypass mode unexpectedly：internal inverter fault, overheating or excessive load surge current
• LCD display abnormal or no status information：front‑panel ribbon cable loose, firmware crash or display module failure
• Remote communication cannot connect：wrong monitoring software configuration, damaged communication cable or failed interface circuit
• Over‑temperature warning：blocked ventilation grille, dust accumulation inside chassis, poor cabinet air circulation