Configured for analog servo control and integrated motion execution in ControlLogix platforms, the Allen-Bradley 1756-M02AS (1756-M02AS Integrated Motion Module) provides two-axis analog motion interface capability with +/-10 VDC servo outputs and isolated discrete relay outputs.

Model Identification

The 1756-M02AS is a ControlLogix Integrated Motion Module designed for applications requiring analog voltage command outputs and feedback-based servo axis control. The module supports two motion axes per module and up to 32 axes per controller configuration.

The module provides analog servo output channels, solid-state isolated relay contacts for discrete outputs, and communication through the ControlLogix backplane.

Hardware Specifications

Analog Motion Control Interface

The 1756-M02AS operates as an analog motion interface module within the ControlLogix architecture. The module converts motion commands from the controller into analog voltage outputs for compatible servo drive systems.

The servo output uses a +/-10 VDC command range with 16-bit analog output resolution. Axis command processing uses 32-bit floating point gain resolution for motion parameter handling.

The module does not provide direct motor power output. Servo amplifiers and external drive hardware are required to provide motor current and power.

ControlLogix Backplane and Motion Architecture

The 1756-M02AS receives operating power through the ControlLogix chassis backplane. The module requires 700 mA at 5 VDC and 2.5 mA at 24 VDC according to the supplied technical specifications.

The module communicates with the ControlLogix controller through the chassis backplane bus. Controller-side configuration, axis setup, and motion execution are handled through the ControlLogix programming environment.

For ControlLogix systems, backplane communication performance and module density depend on the selected chassis configuration, controller capability, and installed motion modules.

Ordering Information

• 1 x Allen-Bradley 1756-M02AS ControlLogix Integrated Motion Module
• Catalog number: 1756-M02AS
• Module function: 2-axis analog motion interface
• Servo motor, servo amplifier, feedback device, chassis, and power supply are not included unless separately specified.
• Programming software and controller hardware are not included unless separately specified.

Installation Guidelines

Chassis Installation

• Install the module into a compatible ControlLogix chassis slot.
• Verify chassis power capacity before installation.
• Follow standard ControlLogix grounding and static protection procedures.
• Confirm the module is fully seated before applying system power.

Signal Wiring

• Use appropriate shielded wiring for analog motion command connections.
• Separate analog motion wiring from high-voltage power conductors.
• Connect cable shields according to the system grounding design.
• Verify servo amplifier input scaling matches the +/-10 VDC command range.

Configuration

• Configure axis parameters according to the connected servo drive requirements.
• Verify analog output scaling before motion commissioning.
• Check discrete output assignments before enabling machine operation.
• Confirm controller axis limits and motion profiles before operation.

Frequently Asked Questions

• How many axes can the 1756-M02AS control?

  The module supports 2 axes per module. A ControlLogix controller configuration can support up to 32 axes according to the supplied specifications.

• What type of servo output does the 1756-M02AS provide?

  The module provides analog voltage servo outputs with a +/-10 VDC range for compatible servo drive interfaces.

• Does the 1756-M02AS provide motor power output?

  No. The module only provides motion command signals. External servo amplifiers are required for motor power control.

• What is the analog output resolution of this module?

  The analog servo output resolution is specified as 16 bits for the motion command signal.

• What is the backplane current requirement at 5 VDC?

  The module requires 700 mA from the 5 VDC ControlLogix chassis backplane supply.

• Does the module use Ethernet/IP directly?

  No. The module communicates internally through the ControlLogix backplane. Network communication depends on the installed controller and communication modules.

• What type of discrete outputs are included?

  The module includes solid-state isolated relay contacts with a nominal operating voltage of 24 VDC.

• Can the 1756-M02AS replace a digital SERCOS motion module?

  No. The 1756-M02AS uses analog voltage servo command outputs and has different interface characteristics from SERCOS-based motion modules.