Siemens 6ES7521-1FH00-0AA0 SIMATIC S7-1500 DI 16x230 V AC BA Input Module
A basic S7-1500 digital input module for sixteen 230 V AC signals arranged in four isolated channel groups.
Product Identification
6ES7521-1FH00-0AA0 is the Siemens SIMATIC S7-1500 DI 16x230 V AC BA input module. Its sixteen channels are divided into four groups of four and use Type 1 input characteristics according to IEC 61131.
Siemens publishes a typical input delay of 20 ms. The front connector is ordered separately, so connector coding, AC group supplies and the complete terminal schedule must stay with the spare record.
The 230 V AC input class must not be confused with visually similar 24 V DC S7-1500 input modules.
Engineering Data
- Product family
- SIMATIC S7-1500 digital input modules
- Module designation
- DI 16x230 V AC BA
- Input count
- 16
- Channel grouping
- 4 groups of 4
- Rated input voltage
- 230 V AC
- Input characteristic
- Type 1 according to IEC 61131
- Typical input delay
- 20 ms
- Front connector
- Ordered separately
- Product lifecycle
- PM300 active product
Functions
Acquire AC switching states
Reads sixteen documented 230 V AC field signals for the S7-1500 controller.
Separate channel groups
Four groups of four maintain the published supply and commoning arrangement.
Provide standard BA behavior
Delivers the basic AC-input profile without importing DC-module or HF-module features.
Applications
AC control-panel status
Use for approved 230 V AC contacts and signals with the specified field protection.
Grouped input wiring
Maintain the four channel groups and their conductor/common records.
Revision-controlled replacement
Match the exact MLFB, project hardware and separately ordered front connector.
Lifecycle
Capture
Record 6ES7521-1FH00-0AA0, rack slot, connector identity, four group supplies and the full input schedule.
Isolate
De-energize every AC group using the approved electrical-safety procedure.
Transfer
Move the keyed front connector or conductors without altering group boundaries.
Test
Prove each input transition, controller diagnostics and the associated machine interlocks.
About IndustryParts
https://www.industryparts.com/Controlled handling for 6ES7521-1FH00-0AA0
IndustryParts keeps the submitted 6ES7521-1FH00-0AA0 identity, requested quantity and installed-system evidence together so a proposed supply can be checked before dispatch.
- Suffix and MOD identity kept visible
- Mating hardware recorded before supply
- Acceptance evidence linked to the order
FAQ
Is 6ES7521-1FH00-0AA0 a 24 V DC input module?
No. It is specifically the sixteen-channel 230 V AC BA input module.
How are the inputs grouped on 6ES7521-1FH00-0AA0?
Siemens lists four groups of four channels.
Does 6ES7521-1FH00-0AA0 include the front connector?
No. The front connector is ordered separately.
What should accompany a 6ES7521-1FH00-0AA0 quotation?
Provide the complete MLFB, connector identity, AC group diagram, channel schedule and project version.
How should 6ES7521-1FH00-0AA0 be accepted after installation?
Verify each AC input, group supply, diagnostic state and all affected interlocks.
