Detailed Product Description of SEW ASI-Bin (ASI-Binar / MLK11A)

SEW ASI-Bin (officially known as ASI-Binar, typical model MLK11A, part number 8231214) is an ASI bus binary slave module launched by SEW-EURODRIVE. It is specifically designed for series of frequency converters / servo drives such as Movimot, MOVIDRIVE, etc., to enable digital I/O signal communication and control between the drives and the on-site AS-Interface (ASI) industrial bus. 

I. Basic Information

Product Full Name: ASI-Binar Slave (ASI Bus Binary Slave)

Model: MLK11A

Part Number: 8231214

Compatible Platforms: SEW Movimot, MOVIDRIVE, MDX, MDV series drives

Communication Standard: AS-Interface (ASI) V2.1 / V3.0

Function Position: Drive → ASI Bus Digital I/O Expansion, Status Acquisition, Remote Control

Operating Voltage: 24 V DC

Weight: Approximately 0.28 kg

Protection: PCB board card type, installed in the internal slot of the drive

II. Functions and Applications

1. Core Function

ASI Bus Slave Communication

Access to AS-Interface Bus Network

Supports standard ASI Data Protocol (4-bit Input + 4-bit Output)

Address: 1–31 (Manual DIP Switch Setting)

Digital I/O Expansion

4 Digital Inputs (DI): 24V Active / Passive

4 Digital Outputs (DO): 24V Transistors (NPN/PNP)

Input / Output and Bidirectional Mapping with Bus

Drive Status Acquisition

Operation, Preparation, Fault, Alarm, Limit, Enable, Speed Reached Remote control

Start / Stop, Forward / Reverse, Point Move, Reset, Speed Selection, Fault Clearing

Diagnosis and Status

LED status lights: Communication, Operation, Fault, Input / Output Activation

Support for SEW drive parameter configuration and fault reading

2. Typical Applications

Logistics conveying lines,立体 warehouses

Packaging machinery， food machinery

Automobile production lines， AGV， material handling

Distributed I/O control of industrial automation equipment

Networking with PLC (Siemens， Schneider， Rockwell) ASI master station

III. Technical Parameters

1. Communication Parameters

Bus standard： AS-Interface (ASI)

Version： V2.1， V3.0 compatible

Transmission rate： 16.7 kbit/s

Slave station address： 1–31 (dip switch)

Bus power supply： 24 V DC (from ASI bus or external power supply)

Maximum bus length： 100 m (standard)， 300 m (extended)

I/O mapping： 4DI + 4DO (standard ASI configuration)

2. Electrical Parameters

Working voltage： 24 V DC ±20%

Power consumption： < 3 W

Digital input (DI)

Quantity： 4 channels

Type： 24 V DC active / passive

Threshold： High ≥ 18 V， Low ≤ 5 V

Filtering： 2 ms

Digital output (DO)

Quantity： 4 channels

Type： 24 V DC transistor

Load capacity： ≤ 500 mA / channel

Short circuit protection， overcurrent protection

Insulation： 2.5 kV DC (bus – I/O – driver)

EMC： Compliant with EN 61000-6-2 / EN 61000-6-4

3. Mechanical and Environmental

Structure： PCB board card， plug-in type

Connection：

ASI bus： 2-pin terminals

I/O： 10-pin terminal block

Driver： Internal bus connector

Operating temperature： -25℃ ~ +60℃

Storage temperature： -40℃ ~ +85℃

Humidity： 5–95% RH (no condensation)

Vibration： 5–2000 Hz， 1 g (compliant with IEC 60068-2-6)

Life： MTBF > 50，000 hours (25℃)

IV. Hardware Interfaces (Terminal Definitions)

1. ASI Bus Interface (2 pins)

ASI+： ASI bus positive

ASI-： ASI bus negative

2. Digital Input DI (4 channels)

DI1： Start / Operation

DI2： Forward / Reverse

DI3： Point Move / Reset

DI4： Speed Selection / Enable

GND： Common ground

3. Digital Output DO (4 channels)

DO1： Ready

DO2： Running

DO3： Fault Alarm

DO4： Speed Reached

24V： External power supply positive

GND： Common ground

4. Status LED

PWR： Power normal (green)

COM： ASI communication normal (green flashing)

ERR： Fault / Communication abnormal (red)

IN1–IN4： Input activation (yellow)

OUT1–OUT4： Output activation (yellow)

V. Configuration and Diagnosis

1. Address Setting

Built-in 5-bit dip switch (binary)

Address range： 1–31

Address change requires power-off and restart to take effect

2. Parameter Configuration

Through SEW MoveCAD， DMS， Service Tool software

Configuration： I/O mapping， function allocation， filtering time， fault response

Support parameter saving / uploading / downloading

3. Diagnostic Function

Real-time status： Communication， I/O， voltage， temperature

Fault codes： E1: ASI bus failure

E2: Address duplication / invalid

E3: 24V under-voltage

E4: Output short circuit

E5: I/O configuration error

Historical fault records (≥10)

VI. Adapter for SEW drive models

Movimot: MM07, MM15, MM22, MM30, MM40

MOVIDRIVE: MDV60A, MDV61B, MDX60, MDX61

MOVITRAC: MCP1, MCP2, MCH4

Others: SEW frequency converters with ASI expansion slot, servo drives

VII. Product advantages

ASI bus standard: mature, simple, low cost, less wiring

Plug-and-play: DIP address, quick installation, no complex configuration

High reliability: industrial grade, wide temperature range, shock resistance, EMC protection

SEW native compatibility: perfect adaptation for SEW drives, seamless integration

Digital I/O expansion: 4DI + 4DO, meeting basic control requirements

Diagnosis convenient: LED status + software diagnosis, quick troubleshooting

Global universal: international standards, multi-country certifications, global supply

VIII. Order information

Model: MLK11A

Part number: 8231214

Packaging: 1 piece / box

Warranty: 12 months

Certifications: CE, UL, cUL, C-Tick

IX. Summary

SEW ASI-Bin (MLK11A) is a dedicated ASI bus binary slave module for SEW drives, providing 4DI + 4DO digital I/O expansion and AS-Interface communication capabilities, enabling low-cost and highly reliable distributed connection between drives and automation systems. It is suitable for logistics, packaging, automotive, general machinery and other scenarios, and is the core component of SEW drive system ASI bus solution.