Product Details

Modicon 92-00688-01 is a high-performance servo drive unit and reliable motion amplifier, also known as MM-PMA1-400 servo drive under AEG Modicon legacy motion series. This mm-pma1-400 drive is designed to drive Modicon 100M and 110M series servo motors, converting low-level motion commands from the host PLC into high-power output for precise speed, torque and position closed-loop control. It accepts 110 / 230 VAC single-phase input and supports pulse command, analog setpoint and serial motion command interfaces, widely used for positioning axes, rotating spindles and synchronised conveyor movements. Equipped with built-in fault detection circuits and LED diagnostic indicators, this servo drive unit can report over-current, over-voltage, over-temperature and encoder feedback errors rapidly for on-site troubleshooting. As a discontinued legacy spare, this motion amplifier serves as a drop-in replacement to restore axis motion performance for ageing Modicon automated machinery without redesigning the whole motion control system.

Basic Parameters

Brand: Modicon (AEG / Schneider legacy)

Model: 92-00688-01, alias MM-PMA1-400

Product Type: Brushless Servo Drive Unit

Input Voltage: 110 / 230 VAC single phase

Compatible Motor: Modicon 100M, 110M series servo motors

Control Mode: Position, speed, torque closed-loop control

Command Interface: Pulse train, analog reference, serial motion port

Diagnostic Indicator: Front LED for power, run, fault and encoder status

Mounting: Panel mounting

Product Status: Discontinued legacy spare

Net Weight: Approximately 2.1 kg

Supported Functions

This servo drive unit executes closed-loop servo regulation according to motion instructions transmitted from the upper controller. The motion amplifier receives target position, speed and torque setpoints, compares them with real-time encoder feedback and dynamically adjusts output current to follow commands accurately. This mm-pma1-400 drive supports electronic gearing, homing sequence, soft limit and fault latch functions. It runs continuous self-monitoring for over-current, bus overvoltage, overtemperature, encoder loss and wiring failure, and locks output to protect the servo motor and drive hardware once critical faults occur. It also supports parameter backup and restore for quick commissioning after replacement.

Core Functions

As a dedicated motion amplifier, this servo drive unit amplifies low-power motion control signals and delivers regulated power to the servo motor to realise high-precision positioning and speed synchronisation. It closes the local servo loop independently and reduces the motion calculation burden of the main PLC. This mm-pma1-400 drive acts as a direct spare to rebuild stable closed-loop motion control for ageing Modicon automation racks.

Hardware Specifications & Environmental Features

Operating Temperature: -10°C ~ +45°C

Storage Temperature: -20°C ~ +70°C

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

Housing: Rugged metal enclosure with internal heat sink

Protection: Overcurrent, overvoltage, overtemperature, overtravel and short-circuit protection

Anti-interference: EMI filtering on power input and differential encoder signal reception

Compatibility: Matches Modicon legacy motion controllers and 100M / 110M servo motors

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 supply voltage, motor model, encoder type and motion parameter settings before ordering.

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