Configured for high-accuracy signal acquisition in CENTUM VP and CS 3000 DCS platforms, the YOKOGAWA VM1*B (VM1B Analog I/O Module) provides direct physical/electrical execution of HART-enabled analog loop management.
| Parameter | Specification |
|---|---|
| Model | VM1*B |
| Brand | YOKOGAWA |
| Origin | Japan |
| Weight | 1.36 kg |
| Dimensions | 356 × 178 × 25 mm |
| Operating Temp | -10 deg C to +55 deg C |
| Power Consumption | 24 V DC |
| I/O Type | Analog (4-20 mA) / HART |
| Redundancy | Dual-redundant capable |
| Calibration | Factory/User-defined storage |
The VM1*B executes 16-bit analog signal processing while concurrently supporting HART protocol data extraction from smart field instrumentation. To maintain loop integrity in high-density rack environments, the module features channel-to-channel isolation that prevents ground-loop interference and common-mode transients. The module utilizes cold junction compensation (CJC) for temperature-sensitive inputs and provides real-time diagnostic reporting via the HART loop protocol. This integration allows for simultaneous analog control and digital device monitoring without interrupting the primary control signal. Furthermore, the redundant architecture enables seamless state synchronization, ensuring continuous operation within the DCS control station.
Q: Does the VM1*B support online hot-swapping?
A: Module replacement must adhere to the specific DCS backplane power-down procedures to prevent potential bus communication errors. Confirm system redundancy status in the engineering workstation prior to extraction.
Q: Is HART communication supported on all input/output channels?
A: The module is engineered for HART-enabled device integration; however, ensure the field wiring and software channel configuration are correctly mapped to permit digital data transit across the analog loop.
Q: How is calibration data preserved during module power cycles?
A: The module incorporates non-volatile memory that stores both factory-default and user-calibrated A/D conversion values, ensuring immediate signal accuracy upon system initialization.
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