Yokogawa AKB335-M005 5 m 50-Pin Signal Cable

Description

Key Technical Specifications

Yokogawa’s official general specification lists AKB335 as a Signal Cable (50-50 pins) and defines -M005 as the 5 m cable-length suffix. The same document lists /NL as the option supporting CSA Non-Incendive instrumentation.

The documentation also specifies use within a -20 to 70 °C temperature environment.

Product Introduction

The Yokogawa AKB335-M005 is a factory-terminated 50-pin-to-50-pin signal cable with a nominal 5 m length, designed for Yokogawa FIO signal connections. Yokogawa documentation specifically identifies AKB335 as a signal cable used for connection between FIO equipment and terminal-board assemblies.

For replacement work, the key identification points are the AKB335 model, -M005 length suffix, 50-50 pin configuration, and connector arrangement. The optional /NL version should be specified when CSA Non-Incendive instrumentation support is required.

AKB335-M005

Installation & Configuration Guide

Stage 1 — Pre-Installation Preparation (~10 min)

1. Confirm the installed cable is marked or documented as .
2. Verify the complete part number: .
3. Confirm that the required cable length is 5 m.
4. Check both mating connectors and terminal-board interfaces for compatibility.
5. Review the applicable FIO and terminal-board wiring drawings before removal.
6. If the installation requires hazardous-area certification, verify whether /NL is required.

⚠️ Do not substitute AKB331, AKB332, or another Yokogawa cable simply because it has the same connector family. The model number identifies the intended FIO connection.

Stage 2 — Removing the Old Cable (~5 min)

1. Place the affected DCS/I/O equipment in the approved maintenance state.
2. Follow the plant’s isolation procedure before disconnecting field or I/O signal wiring.
3. Identify both ends of the existing cable.
4. Label the cable position and connector locations.
5. Disconnect the 50-pin connectors using the applicable connector procedure.
6. Inspect the connectors for bent pins, contamination, corrosion, or mechanical damage.

Stage 3 — Installing the New Cable (~5 min)

1. Verify that the replacement is , not merely another 50-pin Yokogawa cable.
2. Check the cable jacket and connector bodies for shipping damage.
3. Route the 5 m cable without excessive bending or mechanical tension.
4. Connect each 50-pin connector to its designated mating interface.
5. ⚠️ Do not force a connector into position. Confirm keying and alignment first.
6. Secure the cable so that vibration or pulling force is not transferred to the connector.
7. Maintain the cable separation and routing specified by the plant’s DCS installation standard.

Stage 4 — Power-On & Testing (~10–15 min)

1. Restore the affected system according to the approved startup sequence.
2. Check for communication or I/O diagnostic alarms.
3. Verify the expected FIO channels from the engineering or maintenance station.
4. Confirm representative input/output signals at the terminal-board side.
5. Check for intermittent channel faults that could indicate a connector seating problem.
6. Compare channel status with the pre-maintenance condition.
7. Document the installed cable model and length in the maintenance record.

FAQ

What is Yokogawa -M005?

It is a 5 m Yokogawa signal cable with 50-pin connectors at both ends. Yokogawa specifies as a 50-50 pin signal cable and assigns to the 5 m length.

What does the – suffix mean?

– means a 5 m cable length. Yokogawa’s specification lists with two standard lengths: -M002 for 2 m and – for 5 m.

Is – used with Yokogawa FIO?

Yes. Yokogawa documentation identifies as a signal cable for FIO-related connections, including connection between an FIO unit and terminal-board assembly.

Is – the same as -/NL?

No. adds the /NL option for CSA Non-Incendive instrumentation. If the installation requires that option, the complete suffix should be matched when ordering.

What is the specified operating temperature?

Yokogawa specifies the cable for a temperature environment of -20 to 70 °C.

Can with another 50-pin cable?

Not based on connector count alone. The cable is part of a defined Yokogawa FIO connection system. Confirm the model, pin configuration, cable length, connector arrangement, and required option code before substitution.

a 24 V power cable?

No. It is documented as a signal cable, not a dedicated 24 V power cable. Some commercial shipping records describe the product using a 24 V classification, but that should not be interpreted as its functional specification. The Yokogawa documentation identifies as a 50-50 pin signal cable.