Foxboro AD201MZ I/A Series Analog I/O Module
Manufacturer: Foxboro
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Part Number: AD201MZ
Condition：New with Original Package
Product Type: Analog I/O Modules
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Foxboro AD201MZ I/A Series Analog I/O Module
Configured for high-density analog signal processing in Foxboro I/A Series DCS networks, the Foxboro AD201MZ (AD201MZ Analog I/O Module) provides direct physical/electrical execution.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | AD201MZ |
| Brand | Foxboro |
| Origin | USA |
| Weight | 0.29 kg |
| Dimensions | Standard Foxboro I/A Series Form Factor |
| Operating Temp | 0 to +60 deg C |
| Power Consumption | Max 8.5 W |
| Channel Count | 32 channels (analog input/output) |
| Supported Signal Types | Voltage, current, RTDs, thermocouples |
| Conversion Resolution | 16 bits |
| Measurement Accuracy | +/-0.1% of full scale |
| Channel Scan Rate | Up to 250 ms per channel |
| Channel Isolation | 2 kV AC input/output isolation |
| Supply Input | 24 VDC (supports redundant supply) |
| Onboard Diagnostics | Integrated continuous hardware status checking |
Cold Junction Compensation and 4-20 mA HART Loop Protocol
The Foxboro AD201MZ conditions analog voltage, current, RTD, and thermocouple signals across 32 individual channels, integrating cold junction compensation (CJC) algorithms to ensure precision temperature linearization. 2 kV galvanically isolated channels decouple field loop circuits from backplane logic power, maintaining 4-20 mA HART loop protocol signal integrity across high-density field wiring networks. The onboard 16-bit analog-to-digital converters execute continuous signal processing and self-diagnostics, driving stable process data updates to the supervisory host without introducing ground loop potential errors.
Frequently Asked Questions
Q: How does the AD201MZ handle cold junction compensation for thermocouple input channels?
A: Internal temperature sensors located on the field terminal assembly measure reference junction ambient values, allowing onboard algorithms to execute cold junction compensation adjustments before transmitting linearized 16-bit data to the processor.
Q: What power redundancy provisions exist for the AD201MZ module?
A: The module accepts dual 24 VDC supply lines through internal diode-ORing circuitry, maintaining continuous logic and field channel operation if one primary supply bus drops out.
Q: Is hot-swapping permitted during system operation?
A: Yes. The baseplate connector interface allows insertion and extraction of the AD201MZ module while backplane power remains energized, provided proper field terminal disconnection procedures are executed.
Field Installation Guidelines
- Power Feeder De-energization: Verify 24 VDC bus lines are isolated before attaching or wiring field terminal blocks to prevent transient arcing.
- Module Baseplate Insertion: Align the module card guides with the designated slot in the Foxboro I/A Series baseplate and seat the connector firmly until top and bottom mechanical latches engage completely.
- Shield Wiring Terminal Grounding: Connect all individual thermocouple and 4-20 mA cable shield drain wires directly to dedicated terminal block shield lugs, tying them back to the central cabinet earth ground bar.
- Thermocouple Cable Routing: Run thermocouple extension wires in isolated instrument wire trays, away from AC motor power cables or high-voltage lines, to eliminate inductive noise coupling.
- Convection Thermal Venting: Maintain a minimum of 100 mm unobstructed clearance above and below the baseplate rack to allow natural thermal convection across internal heat-dissipating components.