PART NUMBER SEARCH
AMIKONG EXCESS CONTROL SYSTEM PARTS
Specializing In:Automation Spares(DCS, PLC, CNC) Servo Drives HMI Power supplies Controllers
-
Please try to be as accurate as possible with your search.
-
We can quote you on 1000s of specialist parts, even if they are not listed on our website.
-
We can't find any results for “”.
SEE PRODUCTS IN SEARCH PAGE ()
- Home
- ALL MANUFACTURERS
- Siemens
- Siemens Simatic S7
- 6FM1721-3AA20
In Stock
Fast Shipping Available
· Product image is representative; revision or series may vary. Contact us to request a specific version.
- Customs & Documentation
- We prepare clear, order-specific documentation for every international shipment, including the commercial invoice, packing list and available product or compliance documents. Before dispatch, our logistics team confirms the consignee details, declared value, shipping terms and destination requirements with you. Tracking information is provided after shipment, helping your team prepare for import clearance with confidence.
Documents checked before dispatch · Shipment details confirmed · Global tracking provided
- Payment
- Payment is by bank wire only in RMB/CNY, GBP, EUR or USD. Amikon does not accept credit cards or provide credit terms. Cleared payment is required before shipment unless the written quotation expressly states otherwise.
- Product Condition
- Factory New These are new and current items that are procured directly from the manufacturer.
New In Sealed Package Parts are new. They have not been used and still have their original package seal intact.
New in Original Package These parts are new. The packages were not originally sealed by their original manufacturer.
-
20+
years in automation -
ISO 9001
certified quality system -
12 months
amikon warranty -
2-hour reply
from your account manager -
Success Story
solutions in action
-
Please try to be as accurate as possible with your search.
-
We can quote you on 1000s of specialist parts, even if they are not listed on our website.
-
We can't find any results for “”.
SEE PRODUCTS IN SEARCH PAGE ()
PRODUCT DESCRIPTION
6FM1721-3AA20 absolute encoder
Siemens 6FM1721-3AA20 is a absolute encoder documented for SIMATIC industrial automation. It performs its assigned input, processing, operator-interface, control or cooling function through the manufacturer-specified electrical and mechanical interfaces. Verify the complete article identity and installed system configuration before replacement or commissioning.
BEFORE YOU BUY
Confirm the complete absolute encoder
ACTUAL APPLICATIONS
Application context for 6FM1721-3AA20
Official manufacturer documentation supports these system uses when the complete SIMATIC industrial automation configuration is verified.
-
01 · CEMENT & AGGREGATES
Parcel routing and pallet transfer lines
Drive Coordination SystemsRotary kilns and clinker coolersRaw-mill conveyors and bagging lines -
02 · OIL & GAS
Quayside cranes and fuel systems
Quality Inspection SystemsCompressor trains and metering skidsPipeline pumps and storage terminals -
03 · MINING & METALS
Bagging and bulk loading stations
Process Control SystemsCrushers and grinding millsConveyors and flotation cells
Technical specifications for 6FM1721-3AA20
-
Product Model6FM1721-3AA20
-
Product Parametersabsolute encoder
-
In stock1 unit
-
ManufacturerSiemens
-
Module DesignationWF 721
-
Controlled Axes1
-
Encoder SupportSerial absolute and incremental
-
Control FunctionPositioning
-
System PlatformSIMATIC S5
-
Module FormatRack plug-in
-
Setpoint ProcessingPosition and speed
-
Digital InterfacesMachine I/O signals
-
ProgrammingWF configuration software
-
DiagnosticsModule status and faults
View all additional
Alternative Names
6FM1721 3AA20
SIMATIC industrial automation absolute encoder
Siemens absolute encoder
SYSTEM & REPLACEMENT CHECK
Information needed before ordering
Three direct checks to secure your system integration and minimize ordering risks.
Information
System integration
Replacement check
Manuals & support
SYSTEM INTEGRATION
Match 6FM1721-3AA20 to the installed SIMATIC industrial automation
Siemens 6FM1721-3AA20 is a absolute encoder for the SIMATIC industrial automation. Its exact article suffix determines the supported interface, signal or communication function and the approved companion equipment.
Engineering should compare control function (Positioning), system platform (SIMATIC S5) and module format (Rack plug-in) with the installed system design. Confirm connector keying, addressing and configuration-tool support before connection.
Use the manufacturer documentation for the complete wiring and configuration sequence. Validate communication, signal conversion or control response with the connected equipment, then archive measured results and the final configuration with the asset record.
Features:
- Exact identity: 6FM1721-3AA20
- Product class: absolute encoder
- Family: SIMATIC industrial automation
The Siemens 6FM1721-3AA20 requires documented system integration before energising the equipment.
REPLACEMENT CONTROL
Verify the complete 6FM1721-3AA20 identity before exchange
Replace 6FM1721-3AA20 only after matching the complete article code, absolute encoder, installed SIMATIC industrial automation role and documented hardware or firmware revision. Similar housings and related family numbers do not establish functional interchangeability.
Photograph the nameplate, keyed connectors, terminal numbering, cable routing, shields, earth points and adjacent modules. Export the applicable controller, HMI, drive or network configuration and record addresses, parameters and diagnostic messages before removal.
After fitting the verified article, restore the controlled configuration and check every affected signal or communication path. Review status indications and diagnostic buffers, run the documented functional test at a safe operating point and retain the final acceptance record.
Features:
- Exact identity: 6FM1721-3AA20
- Product class: absolute encoder
- Family check: SIMATIC industrial automation
The Siemens 6FM1721-3AA20 requires documented replacement verification before energising the equipment.
DOCUMENTATION STATUS
Browse the Manuals, Datasheets, Official Documents, Links
Important Notice: Official documents are provided through manufacturer links. Accessories, manuals, cables, calibration data, software and certificates are included only when listed in the quotation.
Features:
- Technical values prepared for 6FM1721-3AA20
- Siemens SIMATIC industrial automation references reviewed
- Exact Siemens identity required before service
Documentation for Siemens 6FM1721-3AA20 must match the installed equipment; confirm document applicability before service.
Also searched as
Important notice
Manuals, software, firmware, cables, calibration data and accessories are included only when listed in the quotation. AMIKON is an independent supplier and is not affiliated with or authorised by the manufacturer.
This content has been produced using multiple sources. Takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
BUYER INFORMATION
Commercial terms without hidden steps
Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
-
01
Shipping & delivery
-
DispatchEligible stock: same / next day
-
CarriersDHL, FedEx or UPS
-
Ship fromXiamen, China
-
Packed size23.3 × 30 × 8 cm
-
Shipping weight1 kg
-
-
02
Payment & customs
-
PaymentBank transfer (T/T)
-
CurrenciesUSD · EUR · GBP · RMB
-
Credit cardsNot accepted
-
HS reference85389091
-
OriginGermany
-
-
03
Warranty & returns
-
Warranty12 months from AMIKON
-
InspectionLabel, condition and packing checks
-
ReturnsPrior RMA authorisation required
-
CompatibilityConfirm before order
-
OEM warrantyDoes not apply
-
Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
-
Part checked
Full suffix recorded -
Condition checked
Label and appearance -
Packing checked
Antistatic protection -
Tracking supplied
Established couriers -
Sandy Lin
Dedicated account manager · 15+ years
FREQUENTLY ASKED QUESTIONS
Questions buyers ask about 6FM1721-3AA20
Direct answers about identity, compatibility, stock, warranty, payment and shipping.
-
Commissioning spares troubleshooting for 6FM1721-3AA20 module designation?
For 6FM1721-3AA20 during spare-parts review, a commissioning engineer should match module designation (WF 721) and controlled axes (1) to the installed SIMATIC industrial automation design. A mismatch can prevent correct integration even when the hardware appears similar. -
What distinguishes 6FM1721-3AA20 for commissioning spares?
For spare-parts review, identify 6FM1721-3AA20 by the combined specification: controlled axes is 1, while encoder support is Serial absolute and incremental. A commissioning engineer should confirm both values rather than relying on the family name or enclosure. -
Commissioning spares check — 6FM1721-3AA20 encoder support?
Before wiring or mounting 6FM1721-3AA20, a commissioning engineer should verify the installation supports encoder support of Serial absolute and incremental and preserves the documented control function of Positioning. Record this check in the spare-parts review work pack. -
Commissioning spares: verify 6FM1721-3AA20 against control function?
During spare-parts review, a commissioning engineer should commission 6FM1721-3AA20 under a controlled load or signal and confirm control function reaches Positioning. Cross-check system platform against SIMATIC S5, then save the measured result for engineering acceptance. -
Commissioning spares decision: keep or replace 6FM1721-3AA20?
During spare-parts review, a commissioning engineer should isolate the circuit, compare the actual system platform with the 6FM1721-3AA20 specification of SIMATIC S5, and inspect the related module format requirement (Rack plug-in). This separates a module fault from a supply, wiring, or configuration issue. -
Commissioning spares: order 6FM1721-3AA20 by module format?
For spare-parts review, the 6FM1721-3AA20 service record should state module format as Rack plug-in and retain setpoint processing at Position and speed. These values give a commissioning engineer a repeatable baseline for later replacement and fault diagnosis. -
6FM1721-3AA20 setup: setpoint processing at Position and speed — distributor commissioning spares?
For a commissioning engineer's spare-parts review request, the quotation should identify the complete 6FM1721-3AA20 code and confirm setpoint processing (Position and speed) together with digital interfaces (Machine I/O signals). The distributor should flag any revision or substitute that changes either requirement. -
Why 6FM1721-3AA20 uses Machine I/O signals for digital interfaces — MRO commissioning spares?
For a commissioning engineer's spare-parts review requirement, check the delivered 6FM1721-3AA20 label and order code, then verify digital interfaces is Machine I/O signals and module designation is WF 721. Photograph the label and connectors before acceptance so purchasing and maintenance share the same identity record.
READY TO VERIFY YOUR PART?
Get a 6FM1721-3AA20 quote with price, lead time and revision check.
Trusted by 5,000+ plants worldwide | Backed by our vast inventory of top-tier control parts, drives and servo motors, fast shipments are dispatched to cover your urgent needs. ABOUT US >>
Disclaimer: Amikon Limited sells new and surplus products and develops channels for purchasing such products. Amikon Limited is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because Amikon Limited is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. Amikon Limited is not an authorized distributor, dealer, or representative of the products displayed on this website. All product names, trademarks, brands, and logos used on this website are the property of their respective owners. The description, explanation, or sale of products with these names, trademarks, brands, and logos is for identification purposes only and is not intended to indicate any association with or authorization from any rights holder.
- Q&A
- Policies How to order Part status information Shipping Method Return Policy Warranty Policy Payment Terms Email Marketing Policy VAT and Import Information
- Asset Recovery
- We Buy Your Equipment. Industry Cases Amikong News Technical Resources Why choose us FAQs
- Registered Address
-
32D Guomao Building, No.388, Hubin south Road, Siming district, Xiamen,Fujian, China
