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SIMATIC S7-300 SM 331, AI 8x13 bit
Description:
- The SM 331 module is an 8-channel analog input unit designed for the S7-300 automation system, enabling precise measurement of voltage, current, resistance, and temperature signals.
- It’s commonly used in industrial environments for monitoring process variables like temperature, pressure, and flow, especially where RTDs or analog sensors are deployed.
Specifications:
- Channels: 8 isolated analog inputs.
- Resolution: 13 bits.
- Conversion Time: ~66 ms per channel.
- Input Voltage Range: ±10 V, ±5 V, ±1 V, 0–10 V, 1–5 V.
- Input Current Range: 0–20 mA, 4–20 mA.
- RTD Support: Pt100, Ni100, Ni1000, LG-Ni1000.
- Resistance Range: 0–600 Ω and 0–6 kΩ.
- Input Protection: 30 V (voltage), 40 mA (current).
- Isolation: Yes (channel-to-backplane).
- Diagnostics: No onboard diagnostics or alarms.
- Power Loss: ~0.4 W.
- Bus Current Draw: 90 mA @ 5 V DC.
- Dimensions (W×H×D): 40 × 125 × 117 mm.
- Connector: 40-pin front connector.
- Weight: ~250 g.
- Measurement Accuracy:
- Voltage:
- Typical Error @ 25 °C: ±0.3–0.4%.
- Max Error (Full Temp Range): ±0.5–0.6%
- Current:
- Typical Error @ 25 °C: ±0.3%.
- Max Error (Full Temp Range): ±0.5%.
- Resistance:
- Typical Error @ 25 °C: ±0.3%.
- Max Error (Full Temp Range): ±0.5%.
- RTD (e.g. Pt100):
- Typical Error @ 25 °C: ±0.8–1.2 K.
- Max Error (Full Temp Range): ±1–1.2 K.
SKU | 6ES7331-1KF02-0AB0 |
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Brand | Siemens |
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