Description
Yokogawa AAT145-S50 S1 TC/mV Input Module
Configured for thermocouple and millivolt signal acquisition in CENTUM VP process control networks, the Yokogawa AAT145-S50 S1 (AAT145-S50 TC/mV Input Module) provides direct physical and electrical execution across isolated 16-channel analog input interfaces.
Suffix Breakdown & Model Matrix
| Code SegmentDefinition |
|
| AAT145 |
TC/mV input module |
| S |
Standard type |
| 5 |
No explosion protection |
| 0 |
Basic type |
| S1 |
Ordering suffix revision |
Hardware Specifications
| ParameterSpecification |
|
| Model |
AAT145-S50 S1 |
| Brand |
Yokogawa |
| Product Type |
TC/mV Input Module |
| Channels |
16-channel isolated input |
| Supported Signals |
Thermocouple and mV input signals |
| Isolation |
Channel-to-channel isolation |
| System Platform |
CENTUM VP |
| Ordering Information |
AAT145-S50 |
| Origin |
Singapore |
| Dimensions |
3.2 cm x 10.7 cm x 13 cm |
| Weight |
0.3 kg |
| HS Code |
3595861133822 |
| Operating Temp |
Not specified in supplied data |
| Power Consumption |
Not specified in supplied data |
Channel Isolation and Cold Junction Compensation
The module architecture applies isolated analog acquisition across all 16 input channels to reduce common-mode interference propagation between thermocouple circuits. For thermocouple measurement stability, cold junction compensation (CJC) is implemented at the module interface level within the CENTUM VP analog acquisition path. Shield termination and low-noise routing practices remain necessary to minimize induced millivolt deviation in long-field cable installations.
Frequently Asked Questions
Q: Does the AAT145-S50 S1 support mixed thermocouple and mV input operation on the same module?
A: The supplied product information identifies the module as a TC/mV input type. Mixed signal deployment depends on the I/O channel configuration defined within the CENTUM VP engineering environment and installed terminal arrangement.
Q: Are the 16 input channels electrically isolated from each other?
A: Yes. The provided specification identifies the module as a 16-channel isolated input module with channel isolation intended to reduce inter-channel electrical interference.
Q: What installation consideration is important for thermocouple wiring?
A: Thermocouple extension cable type consistency, shield grounding at a single reference point, and separation from high-current power wiring are standard installation requirements to reduce measurement offset and induced noise.
Field Installation Guidelines
Before module insertion, verify slot assignment and I/O node compatibility within the CENTUM VP cabinet configuration. Use shielded instrumentation cable for all low-level millivolt and thermocouple circuits. Route signal wiring separately from AC power conductors, relay outputs, and variable-frequency drive cabling.
During termination, maintain thermocouple polarity continuity from field junction to terminal interface. Avoid intermediate dissimilar-metal junctions outside compensated terminal locations. Ground cable shields at one control cabinet reference point only to reduce circulating ground current.
Confirm module retention locking after installation and inspect terminal screw torque according to site electrical standards before energization.
