RELIANCE 603515-5A complete tachometer stator and rotor assembly
603515-5A is a complete tachometer stator and rotor assembly manufactured by Reliance Electric, dedicated for speed feedback detection of Reliance classic DC drive and variable speed motor equipment. It is composed of enameled coil stator set and magnetic rotor structure, installed coaxially with motor rotating shaft to convert mechanical rotational speed into analog voltage feedback signal for drive controller closed-loop speed regulation. Original formal production has been discontinued after Reliance’s acquisition by Rockwell Automation, existing available stock includes unused original factory packaging parts and professionally tested refurbished assemblies for aging production line drive system maintenance and spare replacement.
Description
Product Introduction
603515-5A is a complete tachometer stator and rotor assembly manufactured by Reliance Electric, dedicated for speed feedback detection of Reliance classic DC drive and variable speed motor equipment. It is composed of enameled coil stator set and magnetic rotor structure, installed coaxially with motor rotating shaft to convert mechanical rotational speed into analog voltage feedback signal for drive controller closed-loop speed regulation. Original formal production has been discontinued after Reliance’s acquisition by Rockwell Automation, existing available stock includes unused original factory packaging parts and professionally tested refurbished assemblies for aging production line drive system maintenance and spare replacement.
Model Definition
603515 stands for fixed serial code of Reliance standard tachometer assembly product line; digit 5 defines internal coil winding specification, magnetic pole quantity and rated output voltage grade; suffix A represents standardized optimized winding process revision, keeping overall installation dimension consistent with other base models within the same part number series.
Technical Specifications
Rated working input speed range covers 0–3600RPM, standard rated output voltage reaches 7V per 1000RPM with output linearity error less than 1.2% within full measuring range. Rated operating ambient temperature is 0℃~+70℃, storage temperature spans -40℃~+85℃, applicable environment relative humidity 5%~90% non-condensing without corrosive gas. Built-in insulation grade of internal coil is Class B, insulation withstand voltage between winding and outer shell exceeds 1500VAC for one minute, whole assembly weight is around 1.8kg.
Interface and Communication Configuration
Four fixed lead wire terminals extend out from stator side for analog signal output wiring to drive control board; no onboard digital bus communication interface or data transmission circuit. Rotor part adopts hollow inner bore mechanical matching structure for direct sleeving and locking onto motor main shaft, fixed via positioning screw without backplane plug-in connection design. Speed analog feedback signal is transmitted to upper drive control unit purely through hardwire wiring.
Core Functions
Follow synchronous rotation with motor main shaft, generate proportional analog DC voltage signal according to real-time rotating speed relying on magnetic cutting coil principle, feed back speed signal to DC drive control cabinet to realize closed-loop speed regulation control. Stable voltage output ensures drive system automatically adjust output power to restrain motor speed fluctuation caused by load change; internal high-insulation coil structure avoids signal distortion from electromagnetic interference inside cabinet.
Application Scenarios
Mainly supporting Reliance DC governor and matching series variable speed drive motors, widely deployed on metallurgical rolling auxiliary transmission motors, papermaking equipment roller drive motors, textile printing main drive units, chemical industry pump and fan speed-adjusting motor supporting speed measuring feedback components, exclusively used for old imported Reliance drive equipment renovation and fault spare replacement projects.
Operation and Maintenance Instructions
Cut off complete motor and drive cabinet main power before disassembly or installation of the tachometer assembly, confirm motor shaft completely static status to avoid collision damage to internal coil and magnetic core. Lock rotor positioning screw with standard torque to prevent rotor eccentric abrasion during long-term high-speed rotation. Implement annual power-off inspection to check lead wire insulation aging and stator coil surface dust accumulation, blow clean dust with dry compressed air. Prevent corrosive liquid and oil mist from infiltrating into winding part; replace full assembly directly once internal coil open circuit or short circuit fault occurs after checking external wiring.
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