


Digital Module 8DI
Product ID: 954 | Type: 6ES7221-1BF32-0XB0
Price:
142.84$
In Stock
Specifications
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Description:
Siemens 6ES7221-1BF32-0XB0 is a digital input signal module designed for the SIMATIC S7-1200 programmable logic controller. It provides eight digital input channels, allowing flexible expansion of digital sensing capabilities in industrial automation systems.
Key Features
Type: SM 1221, Digital Input (DI)
Number of Inputs: 8
Input Type: 24 V DC, sink/source
Input Voltage:
Rated value: 24 V DC
Permissible range: 20.4–28.8 V DC
Signal "0": 0–5 V at 1 mA
Signal "1": 15 V at 2.5 mA (minimum)
Input Current:
Signal "0": Max. 1 mA (permissible quiescent current)
Signal "1": Min. 2.5 mA, typical 4 mA
Input Characteristic: IEC 61131, Type 1
Input Delay: Parameterizable (0.2, 0.4, 0.8, 1.6, 3.2, 6.4, 12.8 ms; selectable in groups of four)
Input Grouping: In groups of 2
Simultaneously Controllable Inputs: All 8 inputs (up to 40°C in all mounting positions; up to 50°C horizontal installation)
Cable Length:
Shielded: Max. 500 m
Unshielded: Max. 300 m
Power Supply:
From backplane bus (5 V DC): Max. 105 mA
From load voltage L+ (without load): Max. 4 mA per channel
Power Loss: Typical 1.5 W
Diagnostics:
Diagnostic alarm: Yes
Diagnostics indication LED: For status of inputs and maintenance
Status indicator (green): For each digital input
Potential Separation: Between channels, in groups of 2
Protection: IP20
Operating Temperature:
Horizontal: -20°C to +60°C
Vertical: -20°C to +50°C
Storage Temperature: -40°C to +70°C
Relative Humidity: Up to 95% at 25°C (non-condensing)
Dimensions: 45 mm (width) × 100 mm (height) × 75 mm (depth)
Weight: Approx. 155 g (gross, varies by source)
Certifications: CE, CSA, UL, cULus, FM, RCM, KC, marine approval
Front Connector: Required (not included)
Applications
Expansion of digital inputs on SIMATIC S7-1200 PLCs
Automation and process control in industrial environments
Integration into control panels and machinery