Liebert Emerson 02-790889-01 REV.1 System V&I Conditioner Circuit Board

This is a Voltage and Current (V&I) Conditioning Circuit Board used in Liebert / Emerson Network Power systems. It conditions analog feedback signals from sensors and current transformers for accurate monitoring and control within UPS, HVAC, or power distribution systems. Technical Description: Manufacturer: Liebert / Emerson Network Power Model / Part Number: 02-790889-01 Revision: 1 Type: System V&I Conditioner Circuit Board Function: Signal conditioning, scaling, and isolation of analog voltage and current inputs Input Channels: • Multiple analog voltage inputs (0–250VAC scaled) • Current transformer (CT) inputs for AC current sensing Output Signal: 0–5 VDC or 4–20 mA analog signals for control processor input Main Components: • Precision resistors and diodes for scaling and rectification • Linear IC amplifiers (likely OP-AMP-based conditioning circuits) • Isolation transformers for current feedback • Optical isolators for signal separation • Plug-in terminal blocks for input/output connectivity Power Requirement: ±12VDC or 24VDC (depending on application) Interface Connectors: Edge connector and terminal strip connections Protection: • Fuses for circuit protection • MOVs and suppression diodes for transient protection PCB Material: FR4 epoxy glass laminate with conformal coating Mounting: Subrack or panel mount via standoffs Dimensions (approx.): 160 mm (L) × 90 mm (W) Operating Temperature: 0°C to +70°C Applications: • Liebert UPS control and power monitoring systems • Industrial power conditioning and regulation circuits • AC and DC signal processing for load management Compliance: UL Recognized, CE Certified Please review pictures carefully and let us know if you have any questions!