I/O Hub Connections - IO-Link By ClassLumberg Automation IO-Link Class A & Class B M12 Connection ChartCompare Lumberg Automation M12 molded cordsets and field-wireable connectors for Class A and Class B IO-Link connections used with industrial I/O hubs and M12 distribution blocks. Lumberg Automation IO-Link M12 connectors provide the sensor, actuator and auxiliary power connections needed for decentralized machine I/O. Use this Class A and Class B comparison to identify the correct molded cable or field-wireable connector based on connector gender, straight or right-angle orientation and cable diameter.
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IO-Link Class A
Class A provides the standard IO-Link power and C/Q communication connections. It is commonly used for sensors, standard actuators and other IO-Link devices that do not require the additional Class B supply pair.
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IO-Link Class B
Class B uses a 5-pole M12 interface and adds a separate auxiliary power pair on pins 2 and 5. This allows compatible devices to receive additional power through the IO-Link connection.
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M12 Connection Options
Choose molded straight or right-angle cordsets for fast installation, or screw-type field-wireable connectors when cables need to be cut and terminated during installation.
IO-Link Class A vs. Class B Connector SelectionUse the connection type in the left column to compare the corresponding Lumberg Automation Class A and Class B part-number families.
🔎 Molded Cordset Lengths
On the molded cordset families above, /*M identifies the cable-length portion of the part number. Select the required length after confirming the IO-Link class, connector gender and connector orientation needed for the installation. How to Select an IO-Link M12 Connection
1. Identify the Port Class
Confirm whether the I/O hub or connected device requires a Class A or Class B connection before selecting the cable or field-wireable connector.
2. Match Male & Female Ends
Check the connection points on both devices. Molded cable options include male-to-female cordsets as well as single-ended male and female versions.
3. Choose the Orientation
Straight connectors work well where cable-entry clearance is available. Right-angle versions help route cables close to an I/O block, machine frame or enclosure.
4. Check Cable Diameter
For screw-type field-wireable connectors, select the version that matches the cable outside diameter. The options above cover 3–6.5 mm and 4–8 mm cable ranges.
Where Are Lumberg Automation IO-Link Connections Used?Lumberg Automation IO-Link M12 cables and connectors are used to connect industrial I/O hubs, sensors, actuators and other machine-mounted devices in decentralized automation systems. Molded cordsets can reduce field termination time during machine assembly, while field-wireable M12 connectors provide flexibility when cable lengths must be determined during installation. Straight and right-angle versions make it easier to adapt the connection to control cabinets, conveyors, material-handling equipment, robotics and compact machine layouts.
⚙️ Connection Tip
Do not choose an IO-Link cable based only on the M12 connector size. Verify the port class, number of poles, connector gender and pin requirements of both devices. For field-wireable connectors, also confirm that the cable outside diameter falls within the specified clamping range.
Quick Selection Summary
Start with Class A or Class B, then select the required male or female connection, choose straight or right angle, and finish by matching the cable length or cable diameter. This approach helps narrow the Lumberg Automation M12 connector family before selecting the exact part number. |
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