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SIMATIC S7-1200, Analog input, SM 1231, 8 AI
SKU: 6ES7231-4HF32-0XB0
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Short Description
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.
Buy currently uses Select Automation shop pricing and checkout.
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.