Product Model
IB STME 24 AI 4/EF
Selling Points
- 14 Analog Inputs: Supports differential inputs for both voltage and current signals.
- 2Durable Design: IP20 protection ensures reliable operation in harsh environments.
- 3Versatile Connectivity: Compatible with 2, 3, and 4-wire sensor technologies.
- 4Efficient Power Supply: +15 V DC sensor supply with low current consumption (max. 100 mA).
- 5High Precision: 16-bit two's complement A/D conversion with < 0.1% precision.
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.) | 126 | ID code (hex) | 7E |
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. 4 (differential inputs, voltage or current) | A/D conversion time | max. 10 µs (per channel) |
Connection technology | 2-, 3-, 4-conductor (shielded) | Measuring principle | Successive approximation |
Measured value representation | 16 bit two's complement | Number of inputs | 4 (differential inputs, voltage) |
A/D converter resolution | 12 bit (4096 steps; 4.88 mV/quantization step (BP mode); 2.44 mV/quantization step (SF and SF4 mode)) | Voltage input signal | 0 V ... 10 V (SF and SF4 mode)
-10 V ... 10 V (Mode BP) |
Input resistance of voltage input | 200 kΩ | Common mode voltage range signal - ground | -35 V DC ... 35 V DC |
Number of inputs | 4 (Differential inputs, current) | A/D conversion time | max. 10 µs |
A/D converter resolution | 12 bit (4096 steps; 4.88 μA/quantization step (SF mode); 3.91 µA (SF4 mode); 7.8 µA (BP mode)) | Current input signal | 0 mA ... 20 mA (SF mode)
4 mA ... 20 mA (BP and SF4 mode) |
Input resistance current input | 50 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