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SIMATIC S7-1200, Analog input, SM 1231, 8 AI
Pricing available on request
Description:
- This version of the SM 1231 offers 8 differential analog inputs, doubling the channel count compared to the 4-channel HD32 model.
- It supports both voltage and current inputs, making it suitable for multi-sensor environments like HVAC zones, elevator control panels, and crane load monitoring.
Specifications:
- Electrical Characteristics:
- Supply Voltage: 24 V DC.
- Backplane Bus Current: 90 mA (typical).
- Power Loss: 1.5 W (typical).
- Input Protection Limits:
- Voltage: up to 35 V.
- Current: up to 40 mA.
- Analog Inputs:
- Channels: 8 differentials.
- Voltage Ranges: ±10 V, ±5 V, ±2.5 V.
- Current Ranges: 0–20 mA, 4–20 mA.
- Input Resistance:
- Voltage: ≥9 MΩ.
- Current: 280 Ω.
- Resolution: 12-bit + sign (13-bit ADC).
- Cycle Time (all channels): Max 625 µs.
- Smoothing: Configurable (None, Low, Medium, High).
- Accuracy & Diagnostics:
- Basic Error (25 °C): ±0.1%.
- Extended Error (up to 55 °C): ±0.2%.
- Diagnostics:
- Wire break detection.
- Supply voltage monitoring.
- Diagnostic alarms.
- LEDs for input status and maintenance.
- Mechanical & Environmental:
- Dimensions (W x H x D): 45 x 100 x 75 mm.
- Mounting: DIN rail.
- Protection Rating: IP20.
- Operating Temp: –20 to +60 °C.
- Storage Temp: –40 to +70 °C.
- Humidity: Up to 95% (non-condensing).
- Shock/Vibration: IEC 60068 compliant.
- Compliance & Approvals:
- CE, UL, CSA, FM, RCM, KC.
- Marine: DNV, LRS, BV, NK, RINA, CCS.
- ATEX, IECEx.
- Environmental Product Declaration (EPD).
- Global Warming Potential: 43.1 kg CO₂ eq.
| SKU | 6ES7231-4HF32-0XB0 |
|---|---|
| Brand | Siemens |
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