ABB 500ITM02 (1MRB150021R0116/1HDF930712X010) Temperature Measurement Module
High-Precision Multi-Signal Temperature Acquisition for ABB AC500 PLC Industrial Process Control
1. Core Product Overview
The ABB 500ITM02 (order codes: 1MRB150021R0116 / 1HDF930712X010) is a dedicated high-precision temperature measurement module for the ABB AC500 PLC series, engineered for real-time acquisition and conversion of industrial temperature signals in process control systems. It integrates 8 independent configurable temperature input channels, supporting thermocouples, RTD/PT100 resistive temperature sensors and millivolt signals—realizing one-module multi-type temperature detection for diverse industrial scenarios. Built with industrial-grade ruggedness, it features high-resolution ADC, channel-to-channel isolation, EMC/surge protection and IP20 front panel protection, operating stably in -20°C to +70°C harsh environments (chemical plants, power stations, steel mills, food processing). Fully compatible with ABB FBP (Flexible Bus Protocol), it achieves plug-and-play integration with AC500 CPUs and I/O systems, serving as a core component for temperature monitoring and closed-loop control in industrial processes.
• Core Role: 8-channel industrial temperature signal acquisition; thermocouple/RTD/PT100 conversion; AC500 PLC temperature monitoring; process temperature closed-loop control
• Model Info: 500ITM02 (base model); 1MRB150021R0116/1HDF930712X010 (ABB official order codes); AC500 dedicated temperature module
• Key Specs: 8 configurable input channels; 16-bit ADC resolution; ±0.1°C measurement accuracy; 2.5kV channel isolation; -20°C~+70°C operating temp
• Reliability: Cold junction compensation; EMC/surge protection; open/short circuit detection; anti-condensation design; IP20 dust protection
2. Sensing Performance & Configurable Channels
The 500ITM02 is equipped with a 16-bit high-resolution ADC chip and precision signal conditioning circuit, delivering ±0.1°C high measurement accuracy (at 0~100°C) and 0.01°C resolution, meeting the high-precision temperature monitoring requirements of industrial processes. It features 8 independent software-configurable input channels—no hardware rewiring required for signal type switching, supporting all mainstream industrial temperature sensors: Type J/K/T/E/R/S/B/N thermocouples, 2/3/4-wire RTD/PT100/PT1000 resistive sensors, and 0-100mV millivolt signals. The module integrates built-in cold junction compensation (CJC) for thermocouple channels with ±0.2°C compensation accuracy, eliminating the need for external compensation modules, and supports 50Hz/60Hz notch filtering to suppress power line interference for weak temperature signals. Each channel has independent open/short circuit detection and fault alarm functions, ensuring reliable signal acquisition.
• Input Channels: 8 independent software-configurable channels; no hardware modification for signal type switching
• Supported Sensors: J/K/T/E/R/S/B/N thermocouples; 2/3/4-wire RTD/PT100/PT1000; 0-100mV millivolt signals
• Accuracy & Resolution: ±0.1°C (0~100°C); ±0.2°C full range; 0.01°C resolution; 16-bit ADC conversion
• Signal Conditioning: Built-in CJC (±0.2°C accuracy); 50/60Hz notch filtering; precision gain adjustment; weak signal amplification
3. Isolation Protection & Intelligent Fault Diagnosis
The 500ITM02 adopts a full-isolation design for industrial anti-interference, with 2.5kV channel-to-channel electrical isolation and 1kV channel-to-ground isolation, effectively eliminating cross-talk between temperature channels and ground loop interference in industrial sites—ensuring accurate acquisition of weak temperature signals in high-electromagnetic interference environments (e.g., near high-voltage equipment, frequency converters). The module integrates multi-level protection functions: overvoltage protection (up to 30V DC) for each channel, surge protection compliant with IEC 61000-4-5, and EMC protection meeting IEC 61000-4-2/3/6 standards. It also features intelligent fault diagnosis for all channels, with real-time detection of sensor open circuit, short circuit, over-temperature and signal drift, and the fault information is transmitted to the AC500 CPU via FBP bus while being indicated by front-panel LEDs for each channel—enabling on-site quick troubleshooting and reducing system downtime.
• Isolation Design: 2.5kV channel-to-channel isolation; 1kV channel-to-ground isolation; optical isolation for signal transmission
• Industrial Protection: 30V DC overvoltage protection; IEC 61000-4-5 surge protection; IEC 61000-4 EMC compliance; anti-static protection
• Fault Diagnosis: Real-time open/short circuit detection; sensor over-temperature alarm; signal drift monitoring; channel-level fault reporting
• Fault Indication: Front-panel channel LEDs (Normal/Fault); FBP bus fault transmission to AC500 CPU; non-volatile fault logging
4. AC500 PLC Integration & Installation
The 500ITM02 is fully compatible with ABB FBP (Flexible Bus Protocol), achieving plug-and-play integration with all AC500 series CPUs (500CPU03/02/01) and expansion couplers (500SCM01), supporting distributed I/O topology for long-distance temperature acquisition in large-scale industrial sites. It features standard 35mm DIN rail mounting with a compact form factor (120×100×65mm), fitting into standard industrial control cabinets and distributed I/O enclosures, and the detachable spring-type terminal blocks enable fast and reliable on-site wiring—supporting direct connection with thermocouples/RTD sensors without external signal conversion modules. The front panel is designed with clear LED indicators (Power/Module/FBP Bus/8 Channel Status), realizing one-click visual diagnosis of module and channel working status. Powered by 24V DC (18-30V) from the AC500 system, it has reverse polarity protection and low power consumption (<3W), ensuring stable operation with the AC500 PLC system.
• Protocol Compatibility: ABB FBP bus; plug-and-play with AC500 CPUs/couplers; distributed temperature acquisition support
• Mounting & Wiring: 35mm standard DIN rail; 120×100×65mm compact size; detachable spring terminal blocks; direct sensor connection
• Power Supply: 24V DC system power (18-30V); reverse polarity protection;<3W low power consumption; isolated power for channels
• Diagnostics & Operation: Multi-LED front indicators; real-time status monitoring; remote fault query via AC500 CPU; online channel configuration
5. Typical Applications & Compliance
Key Industrial Sectors: Chemical/petrochemical process control; thermal/hydro/wind power generation; steel/metallurgy smelting; food/beverage processing; pharmaceutical production; cement manufacturing; water/wastewater treatment; automotive heat treatment.
Core Use Cases: Industrial furnace temperature monitoring; pipeline medium temperature detection; reactor temperature control; food refrigeration/sterilization temperature measurement; motor/equipment thermal monitoring; process temperature closed-loop control; multi-point distributed temperature acquisition.
Certifications & Compliance: IEC 61131-2 (industrial control); IEC 61010-1 (electrical safety); IEC 61000-4 (EMC/surge); IEC 60068 (vibration/shock); CE/UL/RoHS certified; -20°C to +70°C operating temperature; IP20 front panel protection.
Spare Part & Warranty: ABB genuine original module; factory pre-calibrated for temperature accuracy; 18-month standard warranty; free online calibration tool for AC500 system; fully compatible with all AC500 firmware versions.
YMGK Purchase Information
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- Product Quality: All items are brand new and original. Spare parts include a 1-year warranty, and all products are tested and certified.
- Discounts: Contact us for bulk-order discounts. We also offer further price adjustments if you receive lower quotes for identical products from other suppliers.
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Technical Documentation | ABB 500ITM02 1MRB150021R0116 1HDF930712X010 | AC500 8-Channel High-Precision Temperature Measurement Module
