RELIANCE 800123S flange-type electromagnetic resolver
June 04, 2026

RELIANCE 800123S flange-type electromagnetic resolver

800123S is flange-type electromagnetic resolver under Reliance standard feedback sensor series, interchangeable spare specification corresponding to 800123-2S resolver. It is non-contact rotary position detecting sensor designed for Reliance GV3000 AC inverters and closed-loop servo control motors, responsible for real-time rotor position and rotating speed signal collection. Adopting integrated coil winding and sealed outer housing, this unit serves as original replacement component for legacy industrial drive closed-loop system maintenance and production line equipment renovation.

Description

1.Product Overview

800123S is flange-type electromagnetic resolver under Reliance standard feedback sensor series, interchangeable spare specification corresponding to 800123-2S resolver. It is non-contact rotary position detecting sensor designed for Reliance GV3000 AC inverters and closed-loop servo control motors, responsible for real-time rotor position and rotating speed signal collection. Adopting integrated coil winding and sealed outer housing, this unit serves as original replacement component for legacy industrial drive closed-loop system maintenance and production line equipment renovation.

2.Model Definition

800123 is fixed base catalog number of Reliance standard resolver product lineup with unified mechanical outline and basic internal winding framework. S is short-form suffix marking for flange mounting structure specification, omitting middle digit code in simplified part number, consistent with two-speed winding layout defined by suffix -2S in complete part number, no extra customized structural modification.

3.Technical Specifications

Standard excitation input:26VAC at 2400Hz rated frequency. Internal two-speed winding outputs dual-channel sine and cosine analog feedback signals for position computation. Continuous operating ambient temperature:-20℃~+70℃, enclosure protection grade IP54 for dust and splash proof. Standard flange installation dimension, single solid output shaft construction with anti-vibration mechanical design to adapt frequent start-stop and variable-load industrial operating conditions.

4.Interface and Communication Configuration

Outfit with MS twist-lock aviation plug connector for hard-wired connection to drive control board feedback terminals, no digital fieldbus or serial communication ports equipped. Pin layout separates excitation input wiring and analog feedback signal wiring to reduce signal interference; all position analog signals transmit directly to master control board for closed-loop operation calculation via dedicated cables.

5.Core Functions

Converts mechanical rotation angle into proportional sine and cosine analog electric signals via electromagnetic induction, continuously feeding real-time motor rotor position and speed data to matched inverter control unit. Two-speed winding structure optimizes low-speed measurement precision to guarantee high starting torque output under heavy-load startup. Cooperates with drive controller to realize closed-loop speed regulation and participate in overspeed and abnormal feedback fault protection judgment to secure whole drive system stable running.

6.Application Scenarios

Primarily matched with closed-loop controlled AC motors driven by Reliance GV3000 frequency converters, applied on plastic extruder main dragging motor, printing equipment roller drive, heavy-duty production line conveyor motor and textile spinning machine transmission units. Widely used for on-site resolver breakdown replacement and spare part stocking for industrial equipment maintenance workshops.

7.Operation and Maintenance Instructions

Disconnect host drive total input power and wait for full DC bus discharge before resolver disassembly and wiring work to avoid high voltage injury. Inspect plug locking tightness and cable insulation aging status every six months, clear outer shell surface dust with dry compressed air without opening internal sealed coil cavity. When drive triggers speed feedback fault alarm, test excitation voltage and feedback circuit continuity to confirm resolver winding defect. Store unused spare resolver in constant-temperature dry warehouse with humidity below 60 percent, away from corrosive gas and violent mechanical impact.


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