RELIANCE 615055-2R high-current AC servo power module
615055-2R is high-current AC servo power module of Reliance AutoMax SA500/DM200 rack servo drive system, rated continuous output current 43.7A, serving as high-load power amplifier unit for heavy-duty three-phase AC servo motor drive. It receives digital operation commands from rack main CPU via proprietary backplane bus, converts industrial AC input into adjustable VVVF power to realize closed-loop speed and torque control of matched servo motor. Original production is discontinued by Reliance, available stock includes unused surplus original parts and full-load tested refurbished modules, mainly used for spare replacement and field maintenance of legacy heavy-load automation production line control cabinet.
Description
Product Introduction
615055-2R is high-current AC servo power module of Reliance AutoMax SA500/DM200 rack servo drive system, rated continuous output current 43.7A, serving as high-load power amplifier unit for heavy-duty three-phase AC servo motor drive. It receives digital operation commands from rack main CPU via proprietary backplane bus, converts industrial AC input into adjustable VVVF power to realize closed-loop speed and torque control of matched servo motor. Original production is discontinued by Reliance, available stock includes unused surplus original parts and full-load tested refurbished modules, mainly used for spare replacement and field maintenance of legacy heavy-load automation production line control cabinet.
Model Definition
615055 is universal base part number of SA500 series medium-to-high power inverter module, unified mechanical outline, rack plug dimension and basic main circuit layout across all variants. Middle digit 2 stands for DM200 high-current power grade, higher rated output current than 1-series (1S/1V). Suffix R represents reinforced ruggedized version with upgraded power device cooling structure and strengthened anti-vibration circuit design, mechanically interchangeable with same base-code modules without cabinet modification during replacement installation.
Technical Specifications
Rated three-phase input: 230VAC 50/60Hz, permissible input voltage fluctuation ±15% of nominal value. Nominal continuous output current 43.7A, short-term overload withstand up to 150% rated current within 60 seconds. Continuous working ambient temperature: -15℃ ~ +65℃; intermittent short-time operation: -30℃ ~ +75℃; storage temperature: -40℃ ~ +85℃ under dry non-corrosive environment. Working relative humidity 5%~85% non-condensing; main power circuit passed factory high voltage insulation withstand test, installation dimension complies with Reliance AutoMax standard plug-in rack specification.
Interface and Communication Configuration
Heavy-duty screw terminal blocks for three-phase mains power input and three-phase servo motor power output wiring. Reserved analog signal terminals for external speed command input and tachometer feedback signal connection. Built-in exclusive Reliance AutoMax backplane bus connector for rack plug-in connection, all digital instruction and feedback data transmission completed via proprietary rack bus; no onboard standard RS485/Modbus external communication port by default.
Core Functions
Receive speed, torque and enable digital commands from rack master control board through backplane bus. Internal rectifier converts AC to fixed DC bus voltage, inverter unit modulates DC into variable-frequency variable-voltage three-phase AC to drive heavy-load servo motor. Real-time collects output current and motor speed feedback data and upload to upper controller for closed-loop dynamic regulation and load surge suppression. Integrated complete overvoltage, overcurrent, overheat, phase loss and short-circuit protection circuits; trigger fault lockout and power cutoff upon abnormal operation to prevent module and motor burnout.
Application Scenarios
Exclusive matching power module for Reliance SA500 DM200 rack servo control system. Widely used in heavy-load constant-tension transmission of papermaking equipment, large textile spinning frame main drive, metallurgical conveying heavy roller positioning drive, heavy-duty printing fixed-length control, also as maintenance spare part for outdated heavy packaging machinery and old numerical control transformation drive cabinet.
Operation and Maintenance Instructions
Cut off cabinet total three-phase power supply and wait minimum 30 minutes for internal DC bus capacitor full residual charge discharge before plugging/unplugging module. Inspect backplane gold finger for oxidation and dust accumulation prior to installation to avoid poor contact startup failure. Prohibit long-time continuous operation beyond rated overload parameter to slow internal power semiconductor aging. Quarterly routine maintenance required: clean radiator dust with dry low-pressure compressed air, fasten wiring terminals and check cable insulation aging condition. Forbid unauthorized disassembly of encapsulated internal power circuit; replace whole module after eliminating peripheral wiring and motor load faults when internal circuit fails.
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