Schneider Electric BMXDAI1602 Modicon X80 16-Input AC/DC Module

BMXDAI1602 16-input AC/DC discrete module

The BMXDAI1602 is a Schneider Electric product listed in the datasheet as: discrete input module, Modicon X80, 16 inputs, 24V AC or DC, positive or negative. The BMXDAI1602 is a Modicon X80 discrete input module with sixteen inputs for 24 V AC or DC, with positive or negative logic. The AC and DC choice suits panels where signals come from various origins. Seven Star LLC supplies the BMXDAI1602 in Oman and the GCC as an independent supplier based in Muscat.

Reading the reference: DAI is discrete AC input, 16 the number of channels and the 02 digits the variant.

Technical specifications of the BMXDAI1602

Input characteristics of the BMXDAI1602

Discrete inputs: 16 isolated conforming to IEC 60947-5-2 at 24 V AC; 16 isolated conforming to IEC 61131-2 Type 1 at 24 V DC. Input voltage: 24 V ACisolated; 24 V DC.

The ability to read both AC and DC at 24 V helps in older plants with mixed control voltages. The datasheet lists on and off thresholds and current.

Mixed-voltage design with the BMXDAI1602

Where the control voltage is 24 V DC only, the BMXDDI1602 is the DC module of the same family. The AC/DC unit has more flexible use but different thresholds.

Verify the signals are not noisy.

Selection checklist for the BMXDAI1602

• 16 inputs.
• AC or DC.
• Logic type.
• Rack.
• Wiring.
• Thresholds.

Wiring and diagnostics of the BMXDAI1602

Wire per the diagram, check channel LEDs, and test each input.

Look for noise on long cables.

Typical applications of the BMXDAI1602 in Oman and the GCC

In Oman and the GCC it reads field status in older mixed-voltage plants.

Dimensions, environment and approvals of the BMXDAI1602

For the BMXDAI1602, plan the mounting space from the datasheet: 32 mm (W) x 103.7 mm (H) x 86 mm (D). The BMXDAI1602 weighs 0.115 kg. Mounting, derating and enclosure choices follow the environmental data below, which should be compared with the actual panel temperature and the dust and humidity of the site in Oman and the GCC.

Ambient temperature limits in the datasheet: -40 to 85 °C. Relative humidity: 5 to 95 % 55 °C without condensation. Ingress protection: IP20. Operating altitude: 0 to 2000 m; 2000 to 5000 m with derating. Vibration resistance: 3 gn. Shock resistance: 30 gn. Standards listed: IEC 61131-2.

An AC and DC capable input module like the BMXDAI1602 is a good tool for retrofit work where signals from older panels are mixed. The reference clearly states 24 V input only, so it should not be connected to 110 or 230 V signals; use interposing relays for those. Pay attention to leakage current from long cables or from proximity sensors on AC, which can keep an input on even when the contact is open, and to the response time of AC signals, which is longer than that for DC because the module needs to detect a stable level. The status LEDs show the state of each channel and are the first aid in fault finding. Keep a list of which channel has which polarity and logic, since the module accepts both and the configuration is held in the project. Include the module in the spares list of old plants because many are already installed.

Information to send with an RFQ for the BMXDAI1602

• Full reference and quantity required
• Existing equipment, panel or rack it must fit
• Supply voltage, load or signal details of the application
• Required delivery location and timing
• Whether a spare, a replacement or a new installation

Site conditions in Oman for the BMXDAI1602

Control cabinets in Gulf plants often run hot, because many sit in outdoor kiosks or in rooms where air conditioning is not always reliable. Before you finalise the BMXDAI1602, check the permitted ambient range and any derating stated by the manufacturer against the real temperature inside your panel, and leave the recommended spacing around the device so that heat can escape. Long cable runs between the field and the marshalling cabinet are common on large sites, so confirm the signal types, wiring limits and earthing arrangement early in the design.

It also helps to standardise on a small number of part numbers across a project. Keeping a few spare BMXDAI1602 units on site in Oman shortens recovery time after a fault, and documenting configuration settings makes replacement faster for the maintenance team.

Documents and quotation

A datasheet for this product is attached on this page. It lists the electrical, mechanical and environmental data summarised above.

Send us the part number, quantity and application and we will confirm availability and a quotation. Seven Star LLC is an independent supplier in Muscat and does not represent itself as an official channel of the manufacturer.