I/O Connections

Lumberg Automation M12 I/O Connection Chart

Compare Lumberg Automation 4-pole M12 I/O cordsets and field-wireable connectors for LioN-P IO-Link Master and Hub M12 distribution blocks.

Lumberg Automation M12 I/O connectors provide reliable connections between decentralized I/O equipment and machine-mounted sensors, actuators and other field devices. Use this guide to compare molded cordsets and field-wireable connectors by gender, orientation, termination style and supported cable diameter.

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4-Pole M12

Standard M12 connections for industrial sensor, actuator and decentralized I/O wiring.

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LioN-P I/O

Designed for machine-level connections used with compatible Lumberg Automation LioN-P I/O systems.

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Straight & Right Angle

Choose the connector orientation that best matches available space and cable-routing requirements.

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Field-Wireable Options

Screw and spring termination options support custom cable installation directly in the field.

LioN-P M12 I/O Connection Options

Use the connection type below to identify the appropriate Lumberg Automation molded cordset or field-wireable M12 connector.

I/O Connections
Description	Part Number
Male straight/Female straight	RST 4-RKT 4-646/* M
Male straight/Female right angle	RST 4-RKWT 4-646/* M
Male straight	RST 4-646/*M
Male right angle	RSWT 4-646/*M
Female straight	RKT 4-646/*M
Female right angle	RKWT 4-646/*M
Male straight - Screw type - 3-6.5 mm	RSC 4/7
Male straight - Screw type - 4-8 mm	RSC 4/9
Male straight - Spring type - 4-8 mm	RSCQ 4/9
Male right angle - Screw type - 3-6.5 mm	RSCW 4/7
Male right angle - Screw type - 4-8 mm	RSCW 4/9
Female straight - Screw type - 3-6.5 mm	RKC 4/7
Female straight - Screw type - 4-8 mm	RKC 4/9
Female right angle - Screw type - 3-6.5 mm	RKCW 4/7
Female right angle - Screw type - 4-8 mm	RKCW 4/9

🔎 Molded Cordset Lengths

On the 646-series molded cordsets, /*M represents the selected cable length. First choose the connector gender and orientation required by the equipment, then select the appropriate cable length for the machine layout.

How to Choose a Lumberg Automation M12 I/O Connector

1. Match the Connection

Confirm whether the I/O port requires a male or female M12 connector. Double-ended cordsets provide a ready-made connection between compatible devices.

2. Choose the Orientation

Use straight connectors where cable-entry clearance is available. Right-angle connectors help keep wiring close to distribution blocks, machine frames and compact equipment.

3. Molded or Field-Wireable

Molded cordsets provide fast plug-and-play installation. Field-wireable versions are useful when cable must be routed and terminated to a custom length on the machine.

4. Check Cable Diameter

For field-wireable connectors, select the model that matches the cable outside diameter. Options in this chart cover 3–6.5 mm and 4–8 mm cable ranges.

646-Series M12 I/O Cordset Quick Reference

Connector Type

M12 standard, 4-pole, A-coded

Current Rating

Up to 4 A on applicable 646-series molded cordsets

Operating Voltage

Up to 230 V AC/DC on applicable 646-series molded cordsets

Protection

IP65 and IP67 when properly connected with compatible mating products

Where Are M12 I/O Connections Used?

Lumberg Automation M12 I/O cables and connectors are used to connect distributed I/O blocks with sensors, actuators and other field devices throughout industrial machines. Typical applications include conveyors, packaging equipment, assembly systems, material-handling machinery and automated production equipment. Moving I/O connections closer to field devices can reduce long individual cable runs back to the control cabinet and make machine wiring easier to organize and service.

⚙️ M12 I/O Selection Tip

Do not select an M12 connector by thread size alone. Verify the number of poles, connector coding, gender, orientation and electrical requirements of the I/O port. For field-wireable models, also confirm the cable outside diameter and required termination method before installation.

Quick Selection Summary

Start by confirming the 4-pole M12 I/O connection, then choose male or female and straight or right angle. For molded 646-series cordsets, select the required cable length. For field-wireable connectors, choose the appropriate screw or spring termination and match the connector to the cable diameter.