Product Model
IB ST 24 TEMP 4 RTD

Key Features
- 14 Analog Input Channels: Connect resistance temperature detectors (RTDs) with 4 high-precision analog inputs.
 - 2Versatile Sensor Connections: Supports 2-, 3-, and 4-conductor connections for flexible sensor integration.
 - 3High-Resolution A/D Converter: Utilizes a 24-bit A/D converter for accurate temperature measurements.
 - 4Robust IP20 Protection: Ensures reliable operation in harsh environments with IP20 degree of protection.
 - 5Easy Integration: Designed for seamless integration into INTERBUS-ST stations, simplifying your temperature monitoring setup.
 
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
| Parameter | Value | Parameter | Value | 
|---|---|---|---|
| Width | 118 mm  | Height | 116 mm  | 
| Depth | 117 mm  | No. of channels | 2  | 
| Connection method | ST local bus connector  | Transmission speed | 500 kbps  | 
| Transmission physics | Copper  | ID code (dec.) | 123  | 
| ID code (hex) | 7B  | Length code (hex) | 4  | 
| Length code (dec) | 4  | Input address area | 8 Byte  | 
| Output address area | 8 Byte  | Register length | 8 Byte  | 
| Input name | Analog RTD inputs  | Description of the input | Inputs for resistive temperature sensors  | 
| Number of inputs | 4 (for resistance temperature detectors)  | Connection technology | 2-, 3-, 4-conductor (shielded)  | 
| A/D converter resolution | 24 bit  | Sensor types (RTD) that can be used | Pt 100, Pt 1000, Ni 100, Ni 1000  | 
| Measuring principle | Sigma/Delta process  | Measured value representation | 16 bit two's complement  | 
| Product type | I/O component  | Type | modular
INTERBUS Smart Terminal  | 
| Operating mode | Process data mode with 4 words  | Diagnostics messages | Failure of the internal I/O supply I/O error message sent to the bus coupler
F1 fuse failure I/O error message sent to the bus coupler
I/O supply failure I/O error message sent to the bus coupler  | 
| Connection method | ST local bus connector  | Designation | Communications power  | 
| Supply voltage | 9 V DC (from the ST local bus)  | Current consumption | typ. 54 mA
max. 80 mA  | 
| Power consumption | typ. 0.5 W  | Designation | Periphery supply voltage U  | 
| Supply voltage | 24 V DC  | Supply voltage range | 19.5 V DC ... 30.2 V DC (including all tolerances, including ripple)  | 
| Current consumption | typ. 15 mA  | Test voltage: Bus/Inputs | 500 V AC, 50 Hz, 1 min  | 
| Test voltage: Supply voltage/inputs | 500 V AC, 50 Hz, 1 min  | Test voltage: Supply voltage/Ground conductor | 500 V AC, 50 Hz, 1 min  | 
| Test voltage: I/O voltage/Ground conductor | 500 V AC, 50 Hz, 1 min  | Connection name | Terminal block  | 
| Connection method | Screw connection  | Conductor cross section rigid | 0.2 mm² ... 2.5 mm²  | 
| Conductor cross section flexible | 0.2 mm² ... 2.5 mm²  | Conductor cross section AWG | 24 ... 12  | 
| Stripping length | 8 mm  | Connection method | Screw connection  | 
| Conductor cross section, rigid | 0.2 mm² ... 2.5 mm²  | Conductor cross section, flexible | 0.2 mm² ... 2.5 mm²  | 
| Conductor cross section AWG | 24 ... 12  | Stripping length | 8 mm  | 
| Ambient temperature (operation) | -25 °C ... 55 °C  | Degree of protection | IP20  | 
| Air pressure (operation) | 80 kPa ... 106 kPa (up to 2000 m above sea level)  | Air pressure (storage/transport) | 80 kPa ... 106 kPa (up to 2000 m above sea level)  | 
| Ambient temperature (storage/transport) | -25 °C ... 70 °C  | Permissible humidity (operation) | 10 % ... 95 % (non-condensing)  | 
| Permissible humidity (storage/transport) | 10 % ... 95 % (non-condensing)  | Protection class | III (IEC 61140, EN 61140, VDE 0140-1)  | 
| Mounting type | DIN rail mounting  | 
Specifications may be subject to change without notice
