ABB AI03 Analog Input module 8-CH 2-3-4 Wire RTDs

Features and benefits

16 independently configurable channels supporting:

4 to 20 mADC, 0/1 to +5 VDC, or -10/0 to +10 VDC

Configurable A/D resolution 12 to 16-Bit (with polarity)

22.5 msec update per CH, 180 msec update for all 16 CHs

Accuracy is ±0.1 % of Full Scale Range where FSR = 25 mA or 20 VDC

The EL operating mechanism of the Advac circuit breakers (in all versions) is fitted with a mechanical anti-pumping 

device which prevents re-closing due to either electrical or mechanical commands. 

Should both the closing command and any one of the opening commands (local or remote) be active at the same time, 

there would be a continuous succession of opening and closing operations.

The anti-pumping device avoids this situation, ensuring that each closing operation is only followed 

by a single opening operation and that there is no closing operation after this. 

To obtain a further closing operation, the closing command must be released and then re-launched.

The AI01 Analog Input module processes up to 16 high level, group isolated, Analog Input field signals.

Each channel is independently configurable. FC 221 (I/O Device Definition) sets AI module 

operating parameters and each input channel is configured using FC 222 (Analog Input Channel) to 

set indivdual input channel parameters such as engineering units, High/Low alarm limits, etc. 

The AI01 Analog Input module supports several high level signal ranges.

A/D resolution of each channel is configurable from 12 to 16 bits with polarity. 

The AI01 module has two A/D converters, each with 8 input channels. 

The module will update each configured CH in 22.5 msec, for a total of 180 msec if all 16 channels are configured.

In current mode, the AI01 module provides short circuit protection by limiting current to 96 mA. 

The AI01 module will also detect an open circuit in less than 15 seconds.

Features and benefits

Termination for up to sixteen (16) analog I/O process signals within a horizontal row.

All SD I/O modules & bases of all types (Singular or Redundant) AND (Compact or Full-size), are 100% fully compatible with each other. 

Thus, Singular & Redundant, Compact or Full-size I/O modules can be mounted within a single, common HN800 I/O bus.

Optional mechanical keying can be implemented to prevent insertion of the wrong I/O module type.

Latching device on the base locks the base into position on DIN-Rail.

Industry standard 35-mm DIN rail, Horizontal row mounting.

Furthermore, the anti-pumping device only allows circuit-breaker closure if the following conditions 

are present at the same time:

 1. Closing spring fully charged

 2. Opening mechanical pushbutton and/or opening release coils (-MO1/-MO2) are not active.

 3. The circuit breaker is in the Open position.

Below is a side internal view of the EL mechanism and the associated anti-pumping component. 

When the opening pushbutton or coils are activated the opening shaft lever pushes down on point C of the anti-pump device.

This causes the device to side down slot D in direction of arrow B. 

Then the trigger portion A moves out from between the closing push-button and the closing shaft lever. 

So if the closing button or signal is held active and the opening button or signal is then activated.

The trigger A will pull out from between closing shaft lever and the closing push button. 

Once the open signal is released the trigger A will come to rest under the closing push-button and will 

not return between the closing shaft lever and closing push-button until the button or closing command is released.

The closing push button is operated by the closing coil (MC) directly by the shaft closing device.

This allows the anti-pumping device to prohibit closing by manual or electrical means.

You may need the following additional products：