imo xbf-rd04a xgb plc expansion module

Why Choose the IMO XBF-RD04A 4-Channel RTD Temperature Input Module?

The IMO XBF-RD04A is a dedicated 4-channel RTD temperature input expansion module for compatible IMO XGB programmable logic controller systems. It allows resistance temperature detectors to be connected directly to the PLC, providing accurate digital temperature values for monitoring, control, alarms and process automation.

The XBF-RD04A supports Pt100 and JPt100 RTD sensors using a 3-wire connection. All four channels provide a temperature measurement range of -200–600 °C, with corresponding digital temperature data from -2000–6000 and optional scaled values from 0–4000.

With accuracy of ±0.3% or better at 25 °C, accuracy of ±0.5% or better across 0–55 °C and a conversion speed of 40 ms per channel, the XBF-RD04A provides dependable temperature acquisition for industrial machinery. Digital filtering and automatic sensor-disconnection detection further improve reliability in demanding automation environments.

Key Advantages

• Provides 4 independent RTD temperature input channels in one compact XGB expansion module.
• Supports both Pt100 and JPt100 resistance temperature sensors.
• Wide temperature measurement range of -200–600 °C.
• Accuracy of ±0.3% or better at 25 °C.
• Conversion speed of 40 ms per channel.
• Configurable digital filtering helps stabilise temperature measurements.
• Automatic sensor and lead-wire disconnection detection assists diagnostics and maintenance.
• Direct PLC temperature measurement eliminates the need for separate temperature transmitters in many applications.

Key Features

• IMO XGB RTD temperature input expansion module.
• 4 temperature input channels.
• Supports Pt100 sensors to JIS C1604-1997.
• Supports JPt100 sensors to JIS C1604-1981 / KS C1603-1991.
• -200–600 °C measurement range for both supported sensor types.
• Digital temperature output range of -2000–6000.
• Optional scaling range of 0–4000.
• 3-wire RTD connection for compensation of lead resistance.
• Digital filter adjustment from 160–64,000 ms.
• Per-channel sensor disconnection detection.
• RUN LED provides module operating and fault status.
• ALM LED indicates detected RTD wiring or sensor disconnection.
• Photocoupler isolation between the input terminals and PLC power circuitry.
• 15-point removable terminal block for field wiring.

Direct RTD Temperature Measurement for Industrial Automation

RTD input modules allow PLC systems to measure temperature directly from resistance temperature detectors without requiring a separate temperature transmitter for each sensor. The IMO XBF-RD04A provides four channels for Pt100 or JPt100 sensors and converts their resistance measurements into digital temperature values that can be processed directly by the PLC program.

The module's 3-wire measurement arrangement helps compensate for resistance introduced by sensor cabling, while configurable digital filtering can reduce unwanted fluctuations in measured temperature. Integrated disconnection detection also identifies open sensor or lead-wire conditions, helping automation systems respond appropriately to instrumentation faults.

Typical Applications

• Industrial temperature monitoring.
• Process heating and cooling control.
• Ovens, furnaces and drying equipment.
• Packaging and processing machinery.
• Tank and vessel temperature monitoring.
• Food and beverage processing equipment.
• HVAC and environmental control systems.
• Plastics and manufacturing machinery.
• Machine temperature alarm systems.
• Multi-zone Pt100 temperature measurement.
• PLC control panel temperature input expansion.