Siemens 6ES7521-1BL00-0AB0 | SIMATIC S7-1500 Digital Input Module DI 32x24VDC HF

Specifications

• Channels: 32 digital inputs, isolated in groups of 16
• Input Voltage: Rated 24 V DC (20.4–28.8 V DC)
  • Signal “0”: −30 V to +5 V DC
  • Signal “1”: +11 V to +30 V DC
• Input Current: Typ. 2.5 mA per channel (signal “1”)
• Input Delay: Parameterizable: 0.05 / 0.1 / 0.4 / 1.6 / 3.2 / 12.8 / 20 ms
• Isolation: Optocoupler isolation, group‑wise (16 channels/group)
• Sensor Types: 2‑wire, 3‑wire, 4‑wire PNP/NPN sensors; switches
• Counter Function: 2 × 32‑bit counters (channels 0 & 1), max. 1 kHz
• Process Alarms: Rising/falling edge, channel‑specific西门子工业支持
• Diagnostics: Module diagnostics, wire break, voltage monitoring
• Backplane Power: 1.1 W; Power loss typ. 4.2 W
• Dimensions (W×H×D): 35 × 147 × 129 mm
• Weight: ~ 0.35 kg
• Operating Temp.: 0 °C to +55 °C
• Certifications: CE, UL, RoHS
• Engineering: TIA Portal ≥ V13 SP1, STEP 7 ≥ V5.5 SP3

Key Features

1. High Density: 32 channels in 35 mm width, saves cabinet space。
2. High Speed: Down to 0.05 ms input delay, supports fast signals。
3. Flexible Filtering: Channel‑level adjustable input filters。
4. Integrated Counters: Two high‑speed counters for simple motion tasks。
5. Rich Diagnostics & Alarms: Process and diagnostic alarms for predictive maintenance。
6. Robust & Reliable: Reverse polarity protection, wide voltage range。

Applications

• Factory automation, assembly lines, packaging machinery
• High‑speed signal acquisition (sensors, proximity switches, limit switches)
• Machine safety (emergency stop, safety gates)
• Conveying systems, material handling