Product Model
IB STME 24 BAI 8/EF
Selling Points
- 18 Analog Inputs: Connect voltage or current signals with 8 differential input channels.
- 2DIN Rail Mounting: Compact design fits seamlessly on DIN rail for easy installation.
- 3Wide Temperature Range: Operates from -25°C to +55°C, ensuring reliability in various environments.
- 4Sensor Supply: +15V DC supply for sensors, supporting 2, 3, and 4-wire technology connections.
- 5High Accuracy: Successive approximation A/D conversion with up to 12-bit resolution for precise measurements.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
| Parameter | Value | Parameter | Value |
|---|---|---|---|
No. of channels | 2 | Connection method | ST local bus connector |
Transmission speed | 500 kbps | Transmission physics | Copper |
ID code (dec.) | 127 | ID code (hex) | 7F |
Length code (hex) | 4 | Length code (dec) | 4 |
Input address area | 8 Byte | Output address area | 0 Byte |
Register length | 8 Byte | Input name | Analog inputs |
Number of inputs | max. 8 (Voltage or current) | A/D conversion time | max. 10 µs (per channel) |
Connection technology | 2, 3-conductor | Measuring principle | Successive approximation |
Measured value representation | 8 bit straight binary (default) or 12 bit two’s complement (can be parameterized) | Number of inputs | 8 (Voltage inputs) |
A/D converter resolution | 12 bit (4096 steps; 2.44 mV/quantization steps)
8 bit (256 steps; 39 mV/quantization steps) | Voltage input signal | 0 V ... 10 V
0 V ... 5 V
0 V ... 25 V
0 V ... 50 V |
Input resistance of voltage input | 150 kΩ | Number of inputs | 8 (Current inputs) |
A/D conversion time | max. 10 µs | A/D converter resolution | 12 bit (4096 steps; 3.91 µA/quantization steps)
8 bit (256 steps; 62.7 µA/quantization steps) |
Current input signal | 4 mA ... 20 mA
0 mA ... 20 mA
0 mA ... 40 mA
0 mA ... 60 mA (rms)
0 mA ... 100 mA (peak) | Input resistance current input | 77 Ω |
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 | 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. 45 mA (I
typ. 120 mA (I | Designation | U |
Supply voltage | 15 V ±6 % | Current consumption | max. 100 mA (Total for all channels) |
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 method | Snap on | 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