Product Details

Modicon 121-088-0V5 is a reliable servo drive and high-precision motion controller from the classic Modicon motion series. This legacy drive unit receives position and speed commands from the host PLC and drives matched servo motors to deliver accurate linear or rotary motion. It supports closed-loop position feedback to minimise positioning error and maintains smooth speed regulation under variable load conditions. As a discontinued industrial spare, this servo drive is widely used as a drop-in replacement for failed original units, keeping old motion equipment operational without major mechanical redesign. The motion controller works seamlessly with Modicon PLC and matching servo motors for synchronised axis movement on automated machinery.

Basic Parameters

Brand: Modicon

Model: 121-088-0V5

Product Type: Servo Drive / Motion Controller

Control Mode: Position, speed and torque control

Feedback: Encoder feedback interface

Communication: Compatible with Modicon motion bus

Cooling: Built-in fan cooling

Mounting: Panel mounting inside control cabinet

Product Status: Discontinued legacy spare

Net Weight: Approximately 4.7 kg

Supported Functions

This servo drive supports closed-loop positioning, continuous speed adjustment and torque limiting for mechanical protection. The motion controller enables multi-axis synchronisation, point-to-point movement and homing routines. It provides built-in fault detection for overcurrent, overvoltage, overtemperature and encoder loss, and stores fault codes for quick troubleshooting. This legacy drive unit also supports parameter upload and download for fast configuration duplication.

Core Functions

As the central servo driver, this unit converts control commands into high-precision motor driving signals and tracks encoder feedback to correct positioning drift. The motion controller stabilises motor speed and restricts output torque to protect mechanical structures. This legacy drive unit serves as a direct replacement to restore precise motion control for ageing Modicon automated production lines.

Hardware Specifications & Environmental Features

Operating Temperature: -10°C ~ +60°C

Storage Temperature: -20°C ~ +70°C

Relative Humidity: 5%–95%, non-condensing

Housing: Heavy metal industrial casing

Protection: Overcurrent, overvoltage, overheat and short-circuit protection

Anti-interference: EMI filtering for harsh workshop environments

Compatibility: Matches 800 series backplane and compatible peripheral modules

Industry Applications: Applied in legacy petrochemical distributed control, old paper making production automation, material handling conveyor lines, packaging and textile machinery, water treatment remote signal collection and large conveyor remote I/O control racks.

Note: Confirm 800 series backplane compatibility, pulse signal type, counting mode and preset logic before ordering.

This is from our current stock.

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