Siemens Simatic S7-1500 Digital input module, 16DI x 230VAC Part number 6ES7521-1FH00-0AA0

The 6ES7521-1FH00-0AA0 is a SIMATIC S7-1500 digital input module DI 16x230VAC BA featuring 16 AC input channels organized in groups of 4, with 20ms input delay and Input Type 1 according to IEC 61131. This module is specifically designed for connecting 230VAC digital signals in industrial automation applications, providing reliable signal acquisition from AC-powered devices, switches, sensors, and control equipment.

Key Features

• Input Channels: 16 digital inputs for 230VAC signals
• Channel Grouping: 16 channels organized in 4 groups of 4 channels each
• Input Voltage: 230VAC nominal (AC voltage range compatible)
• Input Delay: 20ms input delay for signal filtering and noise immunity
• Input Type: Type 1 according to IEC 61131 standard
• Isolation: Galvanic isolation between input circuits and backplane
• Diagnostics: Comprehensive diagnostic functions for input monitoring
• Status Indication: LED indicators for channel status and diagnostics
• Operating Temperature: -30°C to +60°C (horizontal), -30°C to +40°C (vertical)
• Dimensions: 35mm W x 147mm H x 129mm D
• Weight: 0.342 kg

Technical Specifications

• Rated Input Voltage: 230VAC
• Input Voltage Range: Typically 187VAC to 264VAC (±15% tolerance)
• Input Current: Typical input current per channel at rated voltage
• Input Frequency: 50/60Hz compatible
• Input Delay: 20ms for signal debouncing and filtering
• Channel Configuration: 16 channels in 4 groups of 4
• Input Type: Type 1 according to IEC 61131
• Isolation Voltage: High voltage isolation between input and system
• Signal Recognition: High/Low signal recognition according to IEC standards
• Response Time: 20ms typical input delay

Applications

The DI 16x230VAC BA module is ideal for industrial automation applications requiring connection of AC-powered digital signals. Perfect for monitoring AC contactors, relays, switches, push buttons, limit switches, and other 230VAC control devices commonly found in industrial machinery, building automation, and process control systems.

Input Signal Types

• AC Contactors: Monitoring contactor auxiliary contacts
• Control Switches: Manual control switches and selector switches
• Limit Switches: Position feedback from machinery and equipment
• Push Buttons: Operator control interfaces
• Relay Contacts: Auxiliary contacts from AC relays
• Safety Devices: Emergency stops and safety interlocks (where applicable)
• Process Signals: AC-powered sensors and field devices

Design Features

• Noise Immunity: 20ms input delay provides excellent noise filtering
• Signal Integrity: Galvanic isolation ensures reliable signal transmission
• Diagnostic Capability: Comprehensive fault detection and status reporting
• Robust Construction: Designed for harsh industrial environments
• Easy Installation: Standard S7-1500 module form factor
• Flexible Wiring: Supports both screw terminals and push-in connections
• Group Organization: Logical grouping for efficient signal management

Configuration Options

• STEP 7 (TIA Portal): Compatible with current versions for configuration
• GSD File Support: PROFINET IO and PROFIBUS DP compatible
• Diagnostic Configuration: Configurable diagnostic functions
• Channel Assignment: Flexible channel mapping and assignment
• Signal Processing: Configurable input characteristics
• Front Connector Options: Screw terminals or push-in (ordered separately)

Product Information

• Article Number: 6ES7521-1FH00-0AA0
• Net Weight: 0.342 kg
• Packaging Dimensions: 15.10 x 15.20 x 4.70 cm
• EAN: 4025515080244
• UPC: 887621139087
• Country of Origin: Germany
• Product Group: 4501

Compliance & Environmental

• RoHS Compliance: Yes (since 25.02.2013)
• WEEE Take-Back: Yes (2012/19/EU)
• REACH Article 33: Contains lead, lead monoxide, silicic acid lead salt, 2-methyl-1-(4-methylthiophenyl)-2-morpholinopropan-1-one, and Bisphenol A >0.1% w/w
• Export Control: AL: N / ECCN: N
• Product Lifecycle: PM300:Active Product
• Standards Compliance: IEC 61131 (Input Type 1)

Download existing graphical data for this product:

• Equipment Manual - DI 16x230VAC BA
• Technical Datasheet

Additional Resources

• SM 521 Digital Input Modules Product Family
• Siemens Industry Mall