Product Overview

The FBM242 is a Foxboro by Schneider Electric externally sourced discrete output interface module. It provides 16 discrete outputs with galvanic isolation per channel, supporting voltages from 15 to 60 VDC, 120 VAC/125 VDC, and 240 VAC. Designed for harsh environments, this module executes discrete I/O or ladder logic programs with configurable options like input filter time and fail-safe configuration. Its compact dimensions (10.4 cm x 4.5 cm x 11.4 cm) and light weight (0.284 kg) make it ideal for space-constrained industrial panels.

Technical Specifications Analysis

The FBM242 operates with a redundant 24 VDC input voltage range (24 VDC +5%, -10%) and consumes a maximum of 3 W at 24 VDC. Heat dissipation reaches 6.5 W maximum at 24 VDC with all outputs at 1.5 A each. Each of the 16 output channels supports a load current of 2.25 A maximum per channel, with in-rush current of 8 A for 20 ms at 30°C and 6.4 A at 70°C. On-state voltage drop is 0.2 V maximum at 2.25 A, and off-state leakage current is 0.1 mA maximum. The module withstands 600 VAC applied for one minute between any channel and ground. Operating temperature for the module is -20 to +70°C, with relative humidity from 5 to 95% noncondensing. It complies with RoHS and holds IECEx certification.

Application Scenarios & Usage Methods

In oil and gas refineries, the FBM242 controls solenoid valves and alarms in hazardous areas, leveraging its galvanic isolation to prevent ground loops. For water treatment plants, it drives motor starters and indicator lights with configurable sustained or momentary outputs. Use the module with a protective diode or MOV across inductive loads to suppress voltage spikes. Its compact design fits easily into Class G3 harsh environment enclosures, ensuring reliable operation in corrosive atmospheres.

Installation Guide & Packing List

Mount the FBM242 on a DIN rail in a clean, dry location within the specified temperature range. Connect the redundant 24 VDC power supply to the input terminals, ensuring polarity matches. Wire each output channel to the load, observing voltage and current limits. The package typically includes the FBM242 module, a termination assembly, and mounting hardware. No calibration is required for the module or termination assembly.

Purchasing Advice

When selecting the FBM242, verify that your application requires 16 isolated discrete outputs with support for 15 to 60 VDC or AC voltages up to 240 VAC. Check the operating temperature range (-20 to +70°C) and ensure your environment meets Class G3 harsh conditions. PetroPartsOnline offers genuine Foxboro by Schneider Electric modules with fast shipping and expert support for industrial automation needs.

Repair & Maintenance Tips

Periodically inspect the module for dust accumulation and clean with a dry, antistatic cloth. Verify that all output connections are tight and free from corrosion. Store the module in a temperature range of -40 to +70°C and relative humidity 5 to 95% noncondensing. Avoid exposing the module to excessive vibration beyond 0.75g (5 to 500 Hz). No routine calibration is necessary.

Frequently Asked Questions (FAQs)

Q: What is the maximum load current per channel on the FBM242?

A: The maximum load current per channel is 2.25 A.

Q: Does the FBM242 require calibration?

A: No, the module and termination assembly require no calibration.

Q: What is the operating temperature range for the FBM242 module?

A: The module operates from -20 to +70°C (-4 to +158°F).

Q: Can the FBM242 be used in harsh environments?

A: Yes, it is suitable for Class G3 (harsh) environments as defined in ISA Standard S71.04.