AAR145-S50 Yokogawa CENTUM FIO RTD POT Module
Manufacturer: Yokogawa
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Part Number: AAR145-S50
Condition：New with Original Package
Product Type: RTD Input Modules
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Country of Origin: Japan
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Yokogawa AAR145-S50 RTD POT Input Module
Configured for high-density temperature and position acquisition in CENTUM VP systems, the Yokogawa AAR145-S50 (AAR145 RTD/POT Input Module) provides direct physical signal processing across 16 individually isolated field channels.
Suffix Breakdown & Model Matrix
The suffix alphanumeric sequence defines the hardware configuration and environmental protection build for the module assembly:
- AAR145: Base model designation specifying a 16-channel isolated RTD and potentiometer input hardware module.
- -S: Standard type hardware configuration for general industrial control applications.
- 5: Non-explosion-proof specification designed for installation in non-hazardous control cabinet environments.
- 0: Basic type execution providing standard terminal assignments and system firmware integration.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | AAR145-S50 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 1.5 kg (3.3 lbs) |
| Dimensions | Standard FIO card slot footprint |
| Operating Temp | 0-50 deg C |
| Power Consumption | 350 mA at 5 VDC |
| Input Channels | 16 channel-to-channel isolated inputs |
| RTD Signal Input | Pt100 3-wire type (JIS C1604:1997 / IEC 751:1995) |
| POT Signal Input | Potentiometer total resistance 100 ohm to 10 kohm |
| Measuring Current | 1 mA (RTD mode) |
| RTD Accuracy | ±150 mohm |
| POT Accuracy | ±0.2% of full scale |
| Channel Isolation | 200 VAC for 1 minute between input channels |
| System Isolation | 500 VAC for 1 minute field-to-system |
| Burnout Detection | Configurable UP / DOWN / OFF (approx. 60 s detection time) |
| Redundancy | Supports dual-redundant configuration |
Process Control Signal Processing
This module incorporates individual channel-to-channel galvanic isolation, preventing inter-channel ground loops across long 3-wire Pt100 RTD and potentiometer wiring loops. Internal signal conditioning circuits generate a 1 mA excitation current for RTD measurements while providing selectable burnout diagnostic routines (UP, DOWN, or OFF) to flag element failures within 60 seconds. Furthermore, cold junction compensation (CJC) logic and 1 M ohm input resistance maintain tight signal accuracy even under fluctuating field ambient conditions. Digital updates stream continuously across the system bus, allowing dual-redundant module pairs to maintain uninterrupted temperature and position feedback for critical continuous process control loops.
Frequently Asked Questions
Q: Can channels on the same AAR145-S50 module be mixed between RTD sensors and potentiometers?
A: Yes, each of the 16 channels can be configured independently for either 3-wire Pt100 RTD inputs or potentiometer position signals via software configuration.
Q: How does the module handle sensor wire breakage?
A: The onboard burnout detection circuit identifies open sensor loops within approximately 60 seconds and drives the process variable to a designated high (UP) or low (DOWN) fail-safe value.
Field Installation Guidelines
Insert the module securely into a designated FIO baseplate slot, engaging the top and bottom mounting mechanisms until fully seated. Terminate field wiring using the appropriate terminal block or interface cable assembly, verifying that wire resistance remains below 150 ohm per line to preserve measurement accuracy. Route 3-wire RTD and potentiometer signal conductors away from high-voltage motor power leads to limit electromagnetic noise coupling. Connect cable shield conductors directly to the designated earth bus bar at a single ground point. Ensure surrounding cabinet temperatures remain within the 0 to 50 deg C operating range to maintain specified drift parameters.