M8 4-Pin Extension Cable & Panel Feed-Through Connector: Features, Applications and Selection Guide
PCM-HD-0168 M8 4-pin extension cables and FT-M8-4 panel feed-through connectors for Senergy-Ai motors, sensors and conveyor automation, covering pinout, shielding, IP67, compatibility and OEM customization.
PCM-HD-0168 and FT-M8-4 provide M8 4-pin connectivity solutions for Senergy-Ai motors, compatible sensors, ConveyLinx control systems and conveyor automation. PCM-HD-0168 combines shielded 22AWG four-core cable, male-to-female M8 connectors and IP67 protection, while FT-M8-4 provides an 11mm rear-panel feed-through interface with a shielded metal construction. Actual compatibility must be verified against the motor or sensor port pinout, electrical ratings, connector gender and exact equipment model rather than the M8 4-pin format alone.
Quick Product Introduction
◆ PCM-HD-0168 - M8 4Pin A-Coded Male-to-Female Industrial Extension Cable
PCM-HD-0168 is an M8 4-pin A-coded male-to-female industrial extension cable designed for industrial automation connectivity. It uses a shielded 22AWG four-core cable and is available in 0.5m, 1m, 1.5m, 2m, 2.5m and 3m lengths.
The cable extends existing M8 connection distances without changing the original connector configuration of compatible motors, sensors, actuators or control devices. It is suitable for machine wiring, control cabinets, robotic systems, automated production lines and sensor extensions, while the shielded cable construction helps support reliable connections in electrically noisy industrial environments.
◆ FT-M8-4 - M8 4-pin male-to-female panel feed-through connector
FT-M8-4 is an M8 4-pin male-to-female panel feed-through connector designed to extend internal M8 connection points to an accessible equipment panel. Featuring an approximately 11mm panel cut-out and rear-mount construction, it can create a fixed M8 interface on control cabinets, machine housings and equipment panels.
Compared with loose inline adapters, its panel-mounted configuration provides a defined and service-friendly connection point, reducing the need to repeatedly open an enclosure to access internal wiring. It is particularly suitable for M8 motor, sensor, actuator, industrial control cabinet, automation equipment and modular machine interface applications.
FT-M8-4 vs PCM-HD-0168
| Comparison | FT-M8-4 | PCM-HD-0168 |
|---|---|---|
| Type | Panel Feed-Through | Extension Cable |
| Primary Function | Panel Pass-Through | CableExtension |
| Installation | 11mm Rear Panel Mount | Inline Cable |
| Typical Use | Cabinet / Enclosure | Motor /Sensor Extension |
Important:
The two products are complementary rather than interchangeable and can support a modular architecture such as:
Motor / Sensor → PCM-HD-0168 → FT-M8-4 → Internal Harness / Controller
The actual connection order and pinout must be determined from the target equipment design.
What Is an M8 4-Pin Industrial Connector?
M8 is a compact circular industrial connector system widely used for sensors, actuators, I/O modules, motors and compact automation equipment. Its engineering advantages include small size, threaded retention, modular wiring and suitability for high-density machinery.
However:
M8 = Connector System
not:
M8 = Fixed Electrical Protocol
"M8 4-pin" primarily identifies a mechanical connector format and contact count. Whether those contacts carry 24V power, sensor signals, motor phases, communications or other functions depends on the equipment-specific pin assignment.
Why Does Senergy-Ai Use a 4-Pin M8 Connection?
Senergy-Ai uses a different connection architecture from traditional Senergy JST versions. PULSEROLLER product information identifies the Senergy-Ai motor controller connection as 4 Pin M8 and lists compatible control architectures including ConveyLinx-Ai2/Ai3 and related Ai controllers.
Its technical material also highlights the routing advantages of the industrial M8 connector and the use of M8 extensions between the motor and controller.
The extension cable therefore performs a physical connectivity function:
Motor → M8 Extension → Controller
rather than protocol conversion.
Common Industrial Connectivity Challenges
Product Details
M8 4-Pin Panel Feed-Through Connector
Premier Cable P/N: FT-M8-4
FT-M8-4 is an M8 4-pin male-to-female panel feed-through connector designed for industrial cabinets, machine panels and automation equipment. Its 11mm panel cut-out and rear-mount construction provide a fixed pass-through point between internal and external M8 wiring.
The metal shielded construction supports mechanical stability and a controlled shielding path while making external motor or sensor connections easier to install and service. FT-M8-4 is passive: it does not modify the pinout or convert sensor signals into motor-control signals.
M8 4-Pin Male-to-Female Extension Cable
Premier Cable P/N: PCM-HD-0168
PCM-HD-0168 is an M8 4-pin A-coded male-to-female sensor/actuator extension cable using shielded 22AWG four-core cable with an IP67-oriented connection design. Length options from 0.5m to 3m support different machine layouts.
Once pin assignment, electrical ratings and connector configuration are verified, the cable can be used to extend compatible Senergy-Ai motor-to-controller connections and can also support M8 4-pin sensors, actuators, field I/O and automation equipment.
PULSEROLLER specifically describes Senergy-Ai as using an industrial 4-pin M8 connection and notes the use of standard four-wire M8 extensions between the motor drive and controller.
Products Display
Compatibility
Compatibility Statement
Mechanical mating of two M8 4-pin connectors does not automatically establish electrical compatibility with a Senergy-Ai motor, sensor, actuator or other automation device. Always verify coding, connector gender, complete pin assignment, voltage, current, signal type, shielding and the exact equipment model.
This is particularly important because ConveyLinx-Ai motor and sensor connections use different electrical definitions. PULSEROLLER documentation identifies motor-port conductors for communication and motor phases U/W/V, while sensor ports use 24VDC, Aux I/O, GND and sensor signal functions. Therefore, an M8 4-pin motor connection should never be assumed interchangeable with an M8 4-pin sensor connection solely because the connector format is similar.
Technical Compatibility Notice
PCM-HD-0168 and FT-M8-4 are fundamentally passive physical interconnects. They extend conductors or provide panel pass-through connectivity but do not convert motor-control logic, sensor I/O or communication protocols.
PULSEROLLER describes its Ai technology as incorporating a microprocessor inside the motor and using an industrial 4-pin M8 connection. Its documentation also describes pulse data associated with Hall-effect sensor inputs being carried over a single conductor. Consequently, an extension used in a Senergy-Ai system must preserve the required pin-to-pin mapping and electrical continuity rather than merely provide mechanically compatible M8 connectors.
How to Choose ?
Identify Motor vs. Sensor Connection
First determine whether the connection is for a Senergy-Ai motor or a sensor. Identical M8 4-pin geometry does not mean identical wiring. Verify communication and motor-phase assignments for motor applications, and power, ground, I/O and sensor-signal definitions for sensor applications.
Choose Extension or Panel Feed-Through
Choose PCM-HD-0168 when additional cable distance is required between the motor, sensor and controller. Choose FT-M8-4 when an internal M8 connection must be presented as a fixed external interface on a cabinet or machine panel.
Verify Coding, Gender & Pinout
Verify M8 coding, four-pin configuration, male/female orientation and the complete wire map before ordering. Never determine compatibility from the "M8 4-pin" description alone, especially when switching between Senergy-Ai motors, sensors and general industrial I/O.
Check Length, Environment & Installation
Select cable length according to conveyor width, controller location and routing requirements, while considering ingress protection, EMI exposure, bending space and cable retention. Panel applications should also verify the FT-M8-4 11mm cut-out, panel thickness and rear-mount clearance.
Customization Capabilities
↕ M8 Interface & Gender Customization
M8 4-pin male/female combinations, coding, keying, thread orientation and mechanical dimensions can be customized according to the exact equipment connector.
□ Pin Assignment & Wire Map Customization
Pin 1–4 assignments can be configured for motor, sensor, actuator or I/O applications, with wire maps and engineering drawings available for OEM projects.
◉ Cable Length & 22AWG Customization
In addition to standard 0.5m to 3m options, custom lengths and conductor constructions can be developed according to conveyor dimensions, voltage drop, flexibility and routing requirements.
⚙ Shielding & EMC Customization
Foil, braid, drain wire, connector-shell and shield-termination structures can be adapted for motor-drive and industrial EMI environments.
⌘ Panel-Mount Structure Customization
Panel thickness, mounting direction, cut-out, rear clearance and retention structures can be customized for conveyor controllers, I/O boxes, robotic cabinets and OEM machine panels.
◇ OEM/ODM Industrial Connectivity Development
Complete OEM/ODM M8 connectivity solutions can be developed according to connector drawings, pin assignments, voltage, current, cable length, shielding, IP requirements and installation conditions, with continuity, insulation, contact resistance, shield continuity, voltage-drop and functional validation available.
Product FAQ
Can the Same M8 Cable Always Be Used for Motors and Sensors ?
Not automatically. ConveyLinx-Ai motor ports carry communication and motor-phase functions, while sensor ports use 24VDC, Aux I/O, GND and sensor-signal assignments. Their wire maps must be verified separately.
Does M8 4-Pin Define a Communication Protocol ?
No. M8 defines a connector system, while "4-pin" defines the number of contacts. The contacts may carry motor, sensor, power, I/O or communication signals.
M8 4-Pin ≠ Fixed Protocol
Mechanical Compatibility ≠ Electrical Compatibility
Is IP67 Guaranteed in Every Installation ?
No. IP67 performance depends on correct mating with a compatible connector, proper thread engagement, intact sealing components and appropriate installation conditions.
Does FT-M8-4 Convert Motor or Sensor Signals ?
No. FT-M8-4 is a passive feed-through connector. It provides electrical pass-through connectivity and does not perform protocol conversion, signal conditioning or motor-to-sensor conversion.
Can Longer M8 Extension Cables Be Customized ?
Yes. Lengths beyond the standard 0.5–3m range can be developed, but conductor resistance, voltage drop, EMI exposure, routing and equipment requirements should be reassessed.
