{"product_id":"1756-m02as-allen-bradley-servo-motion-modules","title":"1756-M02AS | Allen-Bradley Servo Motion Modules","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1756-M02AS\u003c\/strong\u003e is a 2-axis analog servo interface module designed for ControlLogix programmable automation controllers. Installed into any open chassis slot, it drives servo actuators and drives using ±10 VDC velocity or torque references while providing position feedback via Synchronous Serial Interface (SSI) absolute encoders. The module facilitates closed-loop motion routines, dynamic velocity profiles, and coordinated multiaxis interpolation directly within the Logix 5000 environment.\u003c\/p\u003e\n\u003ch3\u003eSSI Position Feedback and Multi-Option Servo Control\u003c\/h3\u003e\n\u003cp\u003eThe module provides two independent channels of SSI absolute position feedback, accepting differential RS-422 signal inputs for precise position tracking without incremental homing routines. Position loop closure, velocity feedforward, and PID gain calculations are handled directly on the hardware board, delivering sub-millisecond loop updates to external drive amplifiers. Integrated inputs support 24 VDC home switches and 5 VDC or 24 VDC registration sensors for axis latching and event execution.\u003c\/p\u003e\n\u003ch3\u003eElectrical Isolation and Power Distribution\u003c\/h3\u003e\n\u003cp\u003eOperating power is drawn directly from the ControlLogix chassis backplane bus, utilizing 700 mA at 5.1 VDC and 2.5 mA at 24 VDC, with a total power dissipation of 5.5 Watts. Channel-to-backplane electrical isolation is rated for 30V continuous, preventing ground loops and protecting controller logic circuits from field-side interference. Field wiring connects via a 36-pin Removable Terminal Block (1756-TBCH or 1756-TBS6H) equipped with keying tabs to enforce correct physical alignment.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1756-M02AS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003e2-Axis Analog Servo Motion Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Product Line\u003c\/td\u003e\n\u003ctd\u003eControlLogix (1756 Chassis)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Axes\u003c\/td\u003e\n\u003ctd\u003e2 axes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003e±10 VDC analog reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFeedback Interface\u003c\/td\u003e\n\u003ctd\u003eSSI (Synchronous Serial Interface) Absolute Encoder (RS-422)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRegistration Inputs\u003c\/td\u003e\n\u003ctd\u003e5 VDC or 24 VDC nominal (Current Sourcing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current Draw\u003c\/td\u003e\n\u003ctd\u003e700 mA @ 5.1 VDC \/ 2.5 mA @ 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e5.5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContinuous Isolation Voltage\u003c\/td\u003e\n\u003ctd\u003e30V continuous (User-to-System)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 °C to +60 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 °C to +85 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e5% to 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUnit Weight\u003c\/td\u003e\n\u003ctd\u003e0.35 kg (0.78 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRemovable Terminal Block\u003c\/td\u003e\n\u003ctd\u003e1756-TBCH (cage clamp) or 1756-TBS6H (spring clamp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLifecycle Status\u003c\/td\u003e\n\u003ctd\u003eDiscontinued by Manufacturer (March 15, 2024)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eRemovable Terminal Block Installation\u003c\/h3\u003e\n\u003cp\u003eBefore installing the 36-pin terminal block onto the module header, wire field connections using 22 to 14 AWG conductors rated for at least 105 °C. Align the wedge-shaped keying tabs on the RTB to match the module keying slots to prevent miswiring. Insert the wired assembly into the front connector until the retaining latches click into place.\u003c\/p\u003e\n\u003cp\u003eFrequently Asked Questions\u003c\/p\u003e\n\u003cp\u003eQ: What position feedback devices are supported by the 1756-M02AS? A: The 1756-M02AS specifically supports absolute encoders with Synchronous Serial Interface (SSI) RS-422 differential outputs. For quadrature incremental encoders, the 1756-M02AE module must be used instead.\u003c\/p\u003e\n\u003cp\u003eQ: Can registration inputs on the 1756-M02AS accept current sinking sensors?A: No, registration inputs must be wired for current sourcing operation because the registration input common (IN_COM) is shared with the module's 24 VDC inputs.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":67156301774963,"sku":"1756-M02AS","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/1756-M02AS_Cocoai.jpg?v=1794290159","url":"https:\/\/www.dcssupplier.com\/products\/1756-m02as-allen-bradley-servo-motion-modules","provider":"DcsSupplier Limited","version":"1.0","type":"link"}