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- Siemens Simatic S7
- S7-1500
- 6ES7521-1FH00-0AA0
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We provide 1 year warranty for all remaining parts.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
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Technical specifications for 6ES7521-1FH00-0AA0
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Product Model6ES7521-1FH00-0AA0
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Product ParametersSM 521 Digital Input Module
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Tariff Code85389091
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Country of originGermany
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Place of shipmentXiamen, China
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In stock1 unit
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Estimated Shipping Size15.10 × 15.20 × 4.70 cm
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ManufacturerSiemens
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Weight0.342 kg
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Product typeSM 521 DI 16x230 V AC BA
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Digital inputs16
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Channel grouping4 groups of 4
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Input typeP-reading, IEC 61131 Type 1
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Rated input voltage120/230 V AC
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Input frequency50/60 Hz
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Signal 0 range0–40 V AC
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Signal 1 range79–264 V AC
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Input current at 230 V11 mA typical
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Input delay20 ms nominal; 25 ms maximum
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Backplane power1 W
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Power loss4.9 W
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Unshielded cable length600 m maximum
Description
Siemens 6ES7521-1FH00-0AA0 is a SIMATIC S7-1500 SM 521 digital input module with sixteen 120/230 V AC inputs arranged in groups of four. It is designed for reading mains-voltage field signals through a separately ordered S7-1500 front connector.
The module uses P-reading inputs and requires suitable conductor routing, circuit protection, isolation practices, and channel wiring for the applied AC voltage. The configured rack slot, front connector, field voltage, input delay, and operating orientation must be verified before commissioning.
Information
Overview
Manuals
Product Applications
Compatibility
Features:
- Sixteen 120/230 V AC digital inputs
- Inputs grouped in four groups of four
- IEC 61131 Type 1 input characteristic
- 20 ms nominal input delay
- S7-1500 front connector ordered separately
The exact module provides 16 P-reading inputs in groups of four, a 20 ms nominal input delay, Type 1 input characteristics and status indication for each channel.
The front connector is ordered separately; verify the 120/230 V AC field circuits, slot configuration and safety isolation before installation.
Siemens 6ES7521-1FH00-0AA0 SM 521 16-Channel Digital Input Module Manuals, Official Documents, Links
Important Notice: Amikon PDF documents are independent reference materials prepared from verified manufacturer sources. Refer to the current Siemens documentation before installation or commissioning. Accessories, manuals, cables, software, certificates, and other items are not included with this equipment unless listed in the stock item description.
- Input monitoring in automated palletizing machinery
- Field sensing in mobile infrared oven systems
- Machine-status acquisition in rotary filling equipment
- Sensor feedback in automated guided vehicles
- Input processing in industrial packaging machinery
These application fields summarize official Siemens S7-1500 reference cases; verify the selected signal-module configuration.
System: Siemens specifies this SM 521 for a configured SIMATIC S7-1500 station. A compatible front connector is ordered separately, and all AC field circuits must follow the approved safety design.
Safety: Disconnect the S7-1500 station and all 120/230 V AC field circuits before handling the module or front connector.
Mounting: Install the module in the configured S7-1500 slot and fit the separately ordered compatible front connector.
Connection: Route and terminate the four input groups according to the approved AC safety, isolation and circuit-protection design.
Commissioning: Verify the field voltage, channel addressing, input delay and diagnostic indications before returning the station to service.
Alternative Names
6ES7521-1FH00-0AA0
Siemens SM 521 16-Channel Digital Input Module
SIMATIC S7-1500 SM 521 16-Channel Digital Input Module
Technical notes
Disconnect the S7-1500 station and all 120/230 V AC field circuits before handling the module or front connector. Install the module in the configured S7-1500 slot and fit the separately ordered compatible front connector. Route and terminate the four input groups according to the approved AC safety, isolation and circuit-protection design. Verify the field voltage, channel addressing, input delay and diagnostic indications before returning the station to service.
FAQs
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What is Siemens 6ES7521-1FH00-0AA0?
+Siemens 6ES7521-1FH00-0AA0 is an S7-1500 SM 521 digital input module with sixteen 120/230 V AC inputs. -
What is the primary function of 6ES7521-1FH00-0AA0?
+The exact module provides 16 P-reading inputs in groups of four, a 20 ms nominal input delay, Type 1 input characteristics and status indication for each channel. -
Which system is 6ES7521-1FH00-0AA0 used with?
+Siemens specifies this SM 521 for a configured SIMATIC S7-1500 station. A compatible front connector is ordered separately, and all AC field circuits must follow the approved safety design. -
What should be checked before installing 6ES7521-1FH00-0AA0?
+Disconnect the S7-1500 station and all 120/230 V AC field circuits before handling the module or front connector. -
Which official Siemens manual covers 6ES7521-1FH00-0AA0?
+SIMATIC S7-1500 SM 521 Technical Data, document 6ES7521-1FH00-0AA0, is the cited official source. -
Where can the official technical data for 6ES7521-1FH00-0AA0 be verified?
+Use the Siemens exact product record and the current official manual linked in the Manuals section.
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