The Yokogawa AKB331-M015/SDV144, also cataloged as the AKB331-M015 Signal Cable Assembly, operates as a dedicated hardware component for discrete signal interconnects within CENTUM VP and ProSafe-RS control platforms. It connects SDV144 digital input modules directly to field terminal boards, switches, sensors, and relays. Configured with 50-to-50 pin factory-terminated connectors and full foil shielding with drain wire, the assembly executes multi-core voltage signal wiring while suppressing external noise across cabinet wiring channels.
| Model Code | Suffix Code | Description / Specification |
|---|---|---|
| AKB331 | -- | Signal Cable (50-50 pins) for I/O module-to-terminal board connection |
| -- | -M015 | Cable length specification: 1.5 m (or designated length code M015) |
| Parameter | Specification |
|---|---|
| Model | AKB331-M015/SDV144 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 0.25 - 0.35 kg (3.0 kg shipping weight) |
| Dimensions | 1.5 m length |
| Operating Temp | -20 to +60 deg C |
| Power Consumption | Passive hardware assembly |
| Connector Type | 50-pin to 50-pin dedicated Yokogawa interfaces |
| Core Configuration | 20 to 40 cores depending on module wiring scheme |
| Shielding Structure | Aluminum foil shield with drain wire for EMI protection |
| Insulation Material | Flame-retardant PVC / XLPE |
| Rated Operating Voltage | 24 VDC (signal level) |
| Module Compatibility | SDV144, SDV531, SDV53A, SDV541, SAT145 |
Process control architectures require strict electromagnetic shielding across signal wiring paths to prevent signal degradation and logical false states. The AKB331 cable assembly utilizes flame-retardant multi-core wiring surrounded by foil shielding and a dedicated drain wire to reject electromagnetic interference (EMI). Channel-to-channel isolation provided at the SDV144 host module level ensures that transient voltage fluctuations from field contact switches do not propagate across adjacent digital input channels or host processing backplanes.
Q: Which Yokogawa I/O modules are physically compatible with the AKB331 50-pin cable connector?
A: The AKB331 cable connects host module platforms including SDV144, SDV531, SDV53A, SDV541, and SAT145 directly to designated terminal boards.
Q: How does the cable shield terminate to prevent ground loops across the system cabinet?
A: The integrated foil shield drain wire connects to the dedicated earth bar at the cabinet entry point, maintaining single-point earthing to avoid ground loop currents.
Q: Can the AKB331-M015 cable be hot-swapped while the system module remains energized?
A: Disconnecting field wiring connectors while active loops are powered may cause state changes in safety logic; power down field loop channels or bypass safety logic prior to disconnection.
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