M12 L-Code 16A Cable for IO-Link Power and AGV Drives

Overview

IO-Link masters, valve blocks and compact field I/O modules have moved the power demand out of the cabinet and onto the machine. A single master with eight ports can draw well past what a 4 A A-coded connector will carry, which is why the M12 L-code 16A cable exists: same thread, same panel cut-out, far more copper in the contacts. It suits daisy-chained 24 V distribution trunks, IP67 field I/O islands, drive power on AMRs and AGVs, and on-board 24 V distribution in vehicles.

Key Specifications

Why L-code carries 16 A

L-code uses five positions in a 4 + FE arrangement with contacts sized for power rather than signal. That sets it apart from K-coded and S-coded parts, which are the mains-voltage codings, and from the A-coded sensor connectors covered by IEC 61076-2-101. The practical consequence is that a 24 V distribution run needing two or three A-coded drops can be fed with one L-coded lead. The keying also stops an L-coded plug being forced into a signal receptacle, so a 16 A supply cannot be landed on a sensor input by mistake.

L is a DC power coding, keyed deliberately away from both the mains codings and the A-coded sensors. The whole family, K, S, T, L, M, P and the rest, is mapped in the coding reference in our download center.

L-code 5-position pin map

Two supply contacts and two returns, plus functional earth. The doubling is the point: it shares the current across more copper than a signal connector has.

Conductor size and voltage drop

On a 24 V trunk the connector is rarely what limits you – the copper is. Sixteen amps is a fine headline number and meaningless on its own: it is only valid at a stated ambient temperature with a stated conductor size, and the voltage that actually arrives at the last master on the trunk depends on the length and on the cross-section you chose.

Send us the load and the routed length and we will size the conductor.

The coding family, with the power codings together

L-code is one of four power codings, and mixing them up is the classic specification error in this part of the range.

Those voltage and current figures are the values published for the coding as an interface, including the 16 A shell rating for L-code. They are not a claim about our part: your assembly is manufactured and accepted to the nominal values on your drawing.

Where it gets installed

• Daisy-chained supply to several IO-Link masters along one trunk
• IP67 field I/O islands mounted directly on the machine frame
• Drive and traction power on AMRs, AGVs and other mobile platforms
• On-board 24 V distribution in commercial and special-purpose vehicles

On an automated guided vehicle the duty is the hard part: the conductor is sized on the peak rather than on the average.

Jacket, contacts and coupling nut

Continuous flexing is the normal condition for this kind of lead, so the standard jacket is halogen-free PUR, which holds up against oils and coolants. Contacts are gold plated to keep contact resistance stable across many mating cycles, and a stainless steel coupling nut is available where the connector sits in a washdown area or outdoors.

Flex life and torsion

Competitor literature for this class of cable quotes very high bend cycle counts. We are not publishing those numbers here. A cycle-life figure means nothing without the test method behind it. Send us the duty cycle and we will obtain the supplier test report written against a recognized method before any figure goes on a drawing.

Figures to confirm before you specify

These figures come from published competitor data rather than our own datasheet. IP69K in particular involves a high pressure, high temperature wash test that not every IP67 connector passes.

Typical applications for this M12 L-code 16A cable

• 24 V trunks feeding several IO-Link masters along one run
• IP67 field I/O islands mounted on the machine frame
• Traction and drive power on AMRs and AGVs
• On-board 24 V distribution in special-purpose vehicles

How to specify your build

1. Load current, including the peak, not just the average.
2. Routed length of the trunk out and back.
3. Ambient temperature at the run.
4. Coupling nut – nickel plated brass or stainless steel.
5. Fixed or moving, with the duty cycle if it moves.
6. Quantity, prototype or production.

Workmanship and testing

M12 L-Code 16A builds are made to IPC/WHMA-A-620 Class 3 workmanship inside an ISO 9001 system, over a 32 to 12 AWG range. continuity and pinout are verified on each M12 assembly before packing, and seal checking is quoted whenever an ingress rating is on the drawing.

Material declarations against RoHS and REACH are issued per project, alongside the dimensional and electrical reports agreed at quotation; see certifications, compliance and material declarations. Where your drawing names a UL style or another approval, the build follows your drawing and ships with the supporting document rather than a claim of our own. For continuous motion the stranding, lay length and jacket are built to the flex method described under continuous-flex construction and flex-life testing, with the cycle count defined in the test scope. More background: cable assemblies for industrial automation and robotics. Tooling for this build is cut in our own tool room and belongs to your program, so a repeat run years later starts from the same tool.

Custom builds and ordering

For M12 L-Code 16A builds, prototypes run from 1 to 50 pcs with a 3 working day turnaround; volume orders begin at 500 pcs and ship 14 working days after approval. Tooling not already held adds around 10 working days. OEM and ODM M12 work ships under your part number and labeling, and material certificates and first-article reports can be supplied.

Related M12 power assemblies

• M12 L-Code Power Splitter for Two IO-Link Masters
• M12 Power T-Code or L-Code DC Power Cable, 63 V DC
• M12 IO-Link Cable, Master to Device Drop for 3 and 4 Wire Ports
• M12 K-Coded Power Cable for 630 V AC Motor Feeds
• M12 S-Coded Power Cable for Single-Phase AC Loads
• M12 Drag Chain Cable, Continuous Flex Cordset for Cable Carriers

Full range: circular M8 and M12 cable assemblies.

Frequently Asked Questions