The Yokogawa AIP826-2 S2, also cataloged as the AIP826-2 Analog Input Module, operates as a dedicated hardware component for multi-channel field signal acquisition within CENTUM VP and ProSafe-RS control platforms. The unit accepts up to 16 current input channels (4-20 mA DC) from field transmitters to process continuous variable data across system backplane buses. Featuring 1500 VAC channel-to-system isolation, configurable UP/DOWN burnout detection, and dual-redundant deployment capabilities, the module executes analog measurement tasks for critical loop monitoring.
| Parameter | Specification |
|---|---|
| Model | AIP826-2 S2 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 0.45 kg |
| Dimensions | Integrated chassis-mount modular housing footprint |
| Operating Temp | -20 to 60 deg C |
| Power Consumption | 400 mA (5 VDC), ~200 mA (24 VDC) |
| Signal Channels | 16 channels (current input) |
| Input Range | 4-20 mA DC |
| Input Resistance | 250 ohm |
| Measurement Accuracy | +/-0.1% of full scale |
| Resolution | 12 to 16 bits (configuration dependent) |
| Response Time | <= 100 ms |
| Dielectric Isolation | 1500 VAC between input terminals and system logic for 1 minute |
Yokogawa process control architectures mandate galvanic isolation barriers to prevent field ground loops from degrading analog measurement accuracy. The AIP826-2 S2 module maintains 1500 VAC withstand dielectric isolation between incoming field sensor loops and internal backplane processing logic. When integrated into cabinets processing standard 4-20 mA current loops, this isolation barrier suppresses common-mode electrical noise and maintains a baseline measurement accuracy within +/-0.1% of full scale across all 16 input channels.
Q: What mechanisms protect signal loops during sensor failure on the AIP826-2 S2 module? A: The module includes configurable UP/DOWN burnout detection routines that force channel values to predetermined safety limits if field transmitter wires break or fail.
Q: What external connection options exist for interfacing field signal wiring to the module? A: Field wiring connects via pressure clamp terminals, MIL connectors, or dedicated signal cable adapters based on cabinet density requirements.
Q: Can operators replace the AIP826-2 S2 module without interrupting active controller processes? A: Yes, when deployed in a dual-redundant module configuration, operators can replace an individual unit online while the secondary module maintains continuous input monitoring.
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