Allen-Bradley 1756-M02AS Analog Servo Module

Series#: AllenBradley

Product Details

1756-M02AS – High-performance SERCOS interface motion module for Allen-Bradley ControlLogix platform.
Provides precise, deterministic control of up to 2 axes for demanding industrial automation applications.
Supports absolute and incremental encoders, with integrated SERCOS drive communication for real-time feedback.
Seamlessly integrates with Rockwell Automation ControlLogix chassis and Studio 5000 environment for rapid deployment.
Reduces wiring and setup complexity through single-fiber optic SERCOS ring topology, enhancing system reliability.
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Specification

The Allen-Bradley 1756-M02AS is a SERCOS interface motion control module engineered for the ControlLogix family, delivering dual-axis synchronized motion for applications ranging from packaging lines to precision assembly. As a core component in Rockwell's Integrated Architecture, the 1756-M02AS leverages the SERCOS (SErial Real-time COmmunication System) protocol to provide deterministic, jitter-free control of servo drives and motors. This module is ideal for engineers requiring high-speed coordination, absolute positioning, and minimal network latency. With its robust construction and support for up to 2 axes, the 1756-M02AS simplifies system design by reducing cabling and enabling centralized motion programming within Studio 5000. Whether upgrading legacy systems or building new greenfield installations, the 1756-M02AS ensures reliable, repeatable motion performance in harsh industrial environments.

Parameter	Specification
Product Type	SERCOS Interface Motion Module
Series	ControlLogix 1756
Model Number	1756-M02AS
Number of Axes Supported	2 (Dual Axis)
Communication Protocol	SERCOS (IEC 61491)
Data Rate	2, 4, 8, 16 Mbit/s (auto-negotiating)
Fiber Optic Cable Type	Plastic Optical Fiber (POF) or Hard Clad Silica (HCS)
Maximum Cable Distance	Up to 40 m (POF), Up to 200 m (HCS)
Topology	Ring (Master-Slave)
Encoder Feedback Support	Absolute (EnDat, SSI) and Incremental (TTL, HTL)
Position Resolution	Up to 32 bits (absolute), 24 bits (incremental)
Update Rate (Position Loop)	62.5 µs to 4 ms (configurable)
Motion Task Types	Position, Velocity, Torque, Gearing, Camming
ControlLogix Chassis Compatibility	1756-A4, A7, A10, A13, A17, A20
Power Consumption	1.2 A Standard Models 5.1 VDC (typical), 2.5 A max
Operating Temperature	0°C to 60°C (32°F to 140°F)
Storage Temperature	-40°C to 85°C (-40°F to 185°F)
Relative Humidity	5% to 95% non-condensing
Vibration Resistance	5 g Standard Models 10-500 Hz (operating)
Shock Resistance	30 g (11 ms half-sine)
Mounting	ControlLogix chassis slot (backplane powered)
Dimensions (H x W x D)	144 mm x 52 mm x 110 mm (5.67 in x 2.05 in x 4.33 in)
Weight	Approx. 0.45 kg (0.99 lb)
Certifications	CE, UL, cUL, ATEX (Zone 2), IECEx
Software Compatibility	Studio 5000 Logix Designer v20 and later
Application Examples	Packaging, material handling, printing, robotic cells, metal forming