SIMATIC S7-1200, Analog input, SB 1231, 6ES7231-4HA30-0XB0

SIMATIC S7-1200, Analog input, SB 1231, 1 AI, +/-10 V DC (12 bit resol.) or 0-20 mA

6ES7231-4HA30-0XB0

? Overview

• A compact signal board (SB 1231) designed to expand a SIMATIC S7‑1200 CPU with 1 analog input (AI). It supports voltage or current modes, ideal for economical system customization

⚡ Electrical Features

• Input configuration: 1 differential analog input
• Voltage ranges: ±10 V, ±5 V, ±2.5 V
• Current input: 0–20 mA
• Resolution: 12-bit (11 bit plus sign)
• Integration time / cycle time: ~156 µs (up to 400 Hz suppression)
• Input impedance: ≥9 MΩ (voltage), ≈250 Ω (current)
• Overvoltage tolerance: ±35 V (destruction limit)

? Power & Consumption

• Backplane (5 V) draw: ~55 mA
• Power loss: ~0.4 W
• Supply voltage (L+): 24 V DC

?️ Diagnostics & Interface

• LED status indicators: Provide I/O status and alarm detection
• Supports diagnostic alarms for wire breaks and fault conditions

? Physical & Environmental Specs

• Size: 38 × 62 × 21 mm
• Weight: ~35 g
• Cable length: up to 100 m with shielded, twisted-pair wiring
• Operating temperature: –20 °C to +60 °C (horizontal); vertical up to +50 °C
• Protection rating: IP20
• Certifications: CE, UL/cUL, FM, RCM, KC, marine approvals

? Lifecycle & Availability

• Classified as an active product (PM300)
• Net weight: 0.029 kg, with short lead times (often 1 day ex‑works)
• Core offering: Provides a cost-effective analog I/O solution without adding bulky modules

? Use Cases & Summary Table