140AII33000C
Schneider Electric
Overview
The Schneider Electric 140AII33000C is a high-resolution input module for the Modicon Quantum series, engineered for precision measurement rather than general analogue acquisition. It is specified for a 0.5 mA measurement current with source resistance below 200 Ω and an exceptionally high input impedance above 10 MΩ, enabling it to read very low-level signals with minimal loading.
Resolution is quoted at 0.76 µV with 0.00 % linearity, and the module includes internal fuse protection and 4 kV electrostatic-discharge resistance. It dissipates about 2 W and draws 400 mA from the backplane. Rated for operation up to 1000 m altitude, the 140AII33000C suits specialist measurement tasks where ordinary 12-bit input modules would be insufficient.
Application & Technical Notes
The 140AII33000C is a niche, high-sensitivity module. The combination of >10 MΩ input impedance and 0.76 µV resolution lets it interface signals that would be masked by the loading and quantisation of standard analogue inputs. The 0.5 mA measurement current and <200 Ω source resistance specification define the source conditions it is designed to work with, so it should be applied only where the transmitter or sensor matches these characteristics.
Integration demands careful signal conditioning and shielding because high-resolution inputs are more susceptible to noise; keep signal wiring away from power circuits and use twisted, shielded cable grounded at one end. Confirm the backplane current budget (400 mA) and that the controller can make use of the fine resolution through appropriate scaling.
Maintenance & Diagnostics
Because the 140AII33000C is a precision instrument, maintenance centres on preserving signal integrity. Commission by verifying the input against a calibrated reference under the specified source conditions, and inspect cabling and grounding before attributing any drift to the module. Keep the rack within rated environmental limits, and ensure ventilation is clear given the 2 W dissipation.
De-energise the rack before insertion or removal. The internal fuse protects against over-current, but a blown fuse indicates a field-side fault that must be corrected before replacement. Store spares in a dry, static-safe environment within the rated storage range.
Sourcing & Procurement
The 140AII33000C is a specialist high-resolution input module; confirm that your signal source matches its 0.5 mA measurement current and <200 Ω source resistance before specifying it. Genuine Schneider Electric modules are recommended where precision and certification matter. Compatible alternatives are unlikely to match the resolution and impedance, so substitution should be approached cautiously.
For long-lead items, refurbished genuine units from a trusted industrial supplier are a reasonable option; validate the seller and retain serial traceability. Buy from authorised distributors where possible, and keep the manufacturer part number on record for audit and warranty.
Frequently Asked Questions
What is the 140AII33000C used for?
It is a high-resolution input module for precision low-level measurement, with 0.76 µV resolution and input impedance above 10 MΩ.
What source conditions does it require?
A 0.5 mA measurement current with source resistance below 200 Ω, as specified by the manufacturer.
What protection does it include?
Internal fuse protection and 4 kV resistance to electrostatic discharge.
How much backplane current does it draw?
Approximately 400 mA, with about 2 W of power dissipation.
What altitude is it rated for?
Operation is rated up to 1000 m above sea level.
Specifications
The Schneider Electric 140AII33000C is an input module from the Modicon Quantum series designed for precise measurements. Capable of handling a measurement current of 0.5 mA, it offers a high input impedance and excellent resolution.
Description
| Note | The 140AII33000C from Schneider Electric is a meticulously engineered input module within the Modicon Quantum series. This component registers a measurement current of 0.5 mA, signifying its capability for precise data acquisition. The module features a source resistance threshold of less than 200 Ohm, ensuring minimal resistance to the incoming signal. With an impressive input impedance greater than 10 mOhm, it guarantees high sensitivity to minute changes in input. For accuracy, this module has a linearity specification of 0.00%, indicating precise output consistent with the input. Furthermore, it achieves a high resolution of 0.76 µV, essential for applications demanding detailed signal fidelity. It dissipates power at 2W, minimizing energy expenditure while functioning. In terms of protection, the 140AII33000C includes an internal fuse that provides a defense mechanism against overload scenarios. The device has a bus current requirement of 400 mA, rendering it compatible with various setups. Weighing only 0.3 kg, this light module can be efficiently integrated into numerous configurations. The module also withstands electrostatic discharge events of up to 4 kV, augmenting its resilience in electrically noisy environments. It can function effectively at a maximum operational altitude of 1000 meters above sea level, making it suitable for a range of installations. |
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Reproduced from the manufacturer's published data. Values marked "Not available" are absent from the source document.