Description
Features:
- Individually Isolated Channels: Each channel is electrically isolated for added protection and noise reduction.
- Selectable Digital Filter Times: Configurable filter times (2, 4, 8, 16 ms) ensure precise digital signal processing.
- Wide Input Voltage Range: Supports AC voltage from 0-50V (low) and 164-264V (high), as well as DC voltage from 0-40V (low) and 175-275V (high).
- Maximum Cable Length: Supports cable lengths up to 200 meters for AC and up to 600 meters for DC, making it highly flexible in large setups.
- Current Limiting: Allows the sensor power to be current-limited by the MTU, protecting your equipment from excessive power consumption.
- Compact Design: Slim 45 mm width and lightweight (0.18 kg) make it easy to integrate into control panels.
- Durable Power Handling: With a typical power dissipation of just 2.8W, the module ensures energy efficiency.
- Fast Response: Offers an analog filter with a fast response time of 5 ms for delay, ensuring accurate input readings.
Technical Specifications:
- Brand: ABB
- Model: DI821
- Series: 800x Digital I/O Modules
- Input Voltage Range:
- “0” (Low): 0-50V AC / 0-40V DC
- “1” (High): 164-264V AC / 175-275V DC
- Input Impedance: 21 kΩ (AC) / 134 kΩ (DC)
- Input Frequency Range: 47-63 Hz
- Filter Times: 2, 4, 8, 16 ms (digital)
- Current Consumption:
- +5V Modulebus: 50 mA
- +24V Modulebus: 0 mA
- +24V External: 0 mA
- Rated Insulation Voltage: 250 V
- Dielectric Test Voltage: 2000V AC
- Maximum Cable Length:
- AC: 200 meters (100 pF/m)
- DC: 600 meters (no significant loss of signal)
- Power Dissipation: 2.8W
- Dimensions:
- Width: 45 mm (1.77”)
- Depth: 102 mm (4.01”) / 111 mm (4.37” with connector)
- Height: 119 mm (4.7”)
- Weight: 0.18 kg (0.4 lbs.)
