The YOKOGAWA AKB336-M010, also cataloged as the AKB336 Signal Cable, operates as a dedicated hardware component for high-density signal interconnection between field terminal blocks and DCS input/output modules.

Suffix Breakdown & Model Matrix

• AKB336: Base model designation for the multi-core signal cable series featuring 20-pin to 20-pin connectivity.
• M010: Indicates the specific cable length configuration (10 m).

Hardware Specifications

Process Control Connectivity

The AKB336 series cables are utilized to maintain 4-20 mA HART loop protocol signal integrity between field junction boxes and Yokogawa process control stations. Each cable assembly ensures channel-to-channel isolation by maintaining strict twisted-pair shielding requirements, preventing cross-talk in high-density I/O racks. The cable incorporates cold junction compensation (CJC) path continuity for temperature-sensing loops, ensuring that thermocouple and RTD signal degradation remains within the tolerance of the host controller.

Frequently Asked Questions

Q: Can the AKB336-M010 cable be shortened or extended in the field? A: Field modification of the cable is strictly discouraged, as manual termination of the 20-pin connectors often introduces impedance mismatch and signal noise, which may interfere with high-precision DCS analog loops.

Q: Are these cables shielded against electromagnetic interference (EMI)? A: Yes, the internal conductors are shielded to suppress induced noise, adhering to industrial standards for DCS signal propagation. Ensure the cable drain wire is connected to the instrument earth at the designated terminal point.

Field Installation Guidelines

1. Connector Engagement: When inserting the 20-pin connectors into the I/O module or terminal board, ensure the locking clips are fully seated. Partial engagement leads to intermittent circuit faults.
2. Bend Radius: Maintain a minimum bend radius of at least 10 times the outer diameter of the cable. Excessive bending can cause internal core fracture or insulation degradation.
3. Cable Routing: Route signal cables in dedicated instrumentation trays. Avoid parallel runs with high-voltage power lines to prevent inductive noise injection.
4. Environment: Ensure that the cable entry points at the control cabinet are sealed to prevent dust or moisture ingress, particularly in corrosive environments where G3 protection might be required for connected modules.