RELIANCE 607980-68M rotary pulse encoder
607980-68M is a rotary pulse encoder developed and produced by Reliance Electric (Baldor-Reliance), specially customized for matching Reliance series DC variable speed drives and heavy-duty industrial speed-regulating motors. It adopts hollow shaft mechanical installation structure, converts motor rotary displacement into standard digital pulse signal through internal grating and photoelectric sensing components, and feeds real-time rotating speed and position data back to drive control unit for closed-loop motion control. Original production has been discontinued, available products on market mainly include original surplus inventory and professionally calibrated refurbished encoders for maintenance replacement of legacy metallurgy, papermaking and chemical production line drive equipment.
Description
Product Introduction
607980-68M is a rotary pulse encoder developed and produced by Reliance Electric (Baldor-Reliance), specially customized for matching Reliance series DC variable speed drives and heavy-duty industrial speed-regulating motors. It adopts hollow shaft mechanical installation structure, converts motor rotary displacement into standard digital pulse signal through internal grating and photoelectric sensing components, and feeds real-time rotating speed and position data back to drive control unit for closed-loop motion control. Original production has been discontinued, available products on market mainly include original surplus inventory and professionally calibrated refurbished encoders for maintenance replacement of legacy metallurgy, papermaking and chemical production line drive equipment.
Model Definition
607980 represents fixed core part number of Reliance dedicated drive encoder product platform; numeral 68 stands for preset pulse resolution parameter, internal circuit layout and internal wiring specification; suffix M denotes modified mechanical structure version with optimized hollow shaft inner diameter and enhanced anti-vibration housing sealing design while retaining consistent electrical parameter and signal definition with other base models of same serial code.
Technical Specifications
Standard output pulse resolution reaches 1024 pulses per full rotation, operating rated input rotating speed ranges from 0 to 4500RPM with maximum instantaneous overload speed up to 5200RPM. Rated working supply voltage is 5VDC ±5%, allowable working ambient temperature spans from -20℃ to +75℃, storage temperature covers -40℃ to +85℃, applicable relative humidity is 5%~93% under non-condensing environment without corrosive gas intrusion. Internal protection grade reaches IP54 for shell, insulation withstand voltage between internal coil and outer casing is 1200VAC for one minute, hollow shaft inner hole is designed for direct coaxial locking with motor output shaft.
Interface and Communication Configuration
Multi-core shielded cable terminal is reserved for A/B/Z phase pulse signal and power supply hardwire wiring to drive main control board; no onboard fieldbus communication chip or digital bus interface. A/B phase quadrature pulse signals realize positive/negative rotation identification, Z phase zero-position signal outputs once per full rotation for origin calibration of motor position. Mechanical fixed holes on encoder casing are used for external support locking without backplane plug-in docking design.
Core Functions
Installed coaxially with motor rotating shaft, photoelectric grating generates continuous A/B phase orthogonal pulse signals synchronously following motor rotation, Z-phase indexing pulse marks mechanical zero point of rotating circle. Transmits pulse data to drive controller for real-time speed sampling and closed-loop speed adjustment, eliminates rotating speed drift caused by load fluctuation; built-in internal overvoltage and short-circuit protection circuit automatically cuts off signal output to avoid encoder damage when abnormal power input occurs.
Application Scenarios
Exclusively matched with medium and large capacity Reliance DC governor and supporting variable frequency drive motors, widely used for speed closed-loop feedback of main transmission equipment on metallurgical rolling line auxiliary conveyors, papermaking machine roller drive units, chemical plant large pump and fan speed adjustment systems, as well as old textile printing machinery drive system renovation and spare part replacement projects.
Operation and Maintenance Instructions
Cut off full power of matched drive cabinet and confirm motor shaft static completely before encoder disassembly and installation, tighten hollow shaft locking screw with specified torque to prevent inner hole abrasion and signal distortion caused by eccentric rotation. Avoid direct impact on encoder shell during installation to prevent internal grating fragmentation. Conduct annual power-off maintenance to check shielded cable insulation aging and casing surface dust accumulation, remove surface dirt with dry compressed air; prohibit random disassembly of sealed shell, replace complete encoder directly once internal photoelectric component failure is confirmed after troubleshooting external wiring faults.
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