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Siemens SIMATIC SC / ET 200SC

6ES7121-1BB00-0AA0

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The Siemens 6ES7121-1BB00-0AA0 is a SIMATIC SC electronic submodule with two 24 V DC digital inputs, supplied in an eight-piece packaging unit.

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Siemens 6ES7121-1BB00-0AA0

Technical Specifications

Official Siemens technical values for 6ES7121-1BB00-0AA0.

01Product IdentitySiemens article data

ManufacturerSiemens

Article Number6ES7121-1BB00-0AA0

Digital Inputs2

Rated Load Voltage24 V DC

02Input Voltage DataIEC 61131 input levels

Signal 0 Voltage−3 to +5 V

Signal 1 Voltage13 to 30 V

Signal 1 Current7 mA typ.

Simultaneous Inputs2

03Timing & IsolationElectrical test values

Delay 0→11.2–4.8 ms

Delay 1→01.2–4.8 ms

2-Wire Quiescent Current1.5 mA max.

Isolation Test1,500 V AC

04Physical DataModule dimensions

Width10 mm

Height64 mm

Depth51 mm

Approx. Weight15 g

Siemens 6ES7121-1BB00-0AA0 Product Support

Frequently Asked Questions

Compatibility, sensor wiring, signal evaluation, commissioning and ordering guidance for 6ES7121-1BB00-0AA0.

Which station family is this electronic submodule intended for?

It is intended for SIMATIC SC / ET 200SC stations that require two 24 V DC digital inputs.

How should a technician verify the two input states during commissioning?

Treat −3 to +5 V as signal 0 and 13 to 30 V as signal 1; the typical current at signal 1 is 7 mA.

Can a two-wire sensor be connected to the input channel?

Yes, provided its quiescent current does not exceed 1.5 mA and the field wiring follows the Siemens station documentation.

How quickly can the input status respond after the field signal changes?

The specified delay is 1.2 to 4.8 ms for both 0→1 and 1→0 transitions.

Which supply rating should be confirmed before the module is installed?

Confirm a rated load voltage of 24 V DC and verify that both digital-input channels are included in the station design.

How should the spare part be identified on a purchase order?

Use the complete Siemens article number 6ES7121-1BB00-0AA0; do not omit the final suffix.

Which isolation value applies when the installation documentation is reviewed?

The Siemens technical data specifies an isolation test voltage of 1,500 V AC; testing must follow the manufacturer's approved procedure.

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International Shipping

Shipment can be arranged through DHL, FedEx or UPS according to the destination, parcel size and confirmed order requirements.

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Dispatch information and the available tracking reference are shared after the shipment has been collected by the selected carrier.

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Order DocumentationCommercial, packing and shipment details are supplied according to the confirmed order.

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Pre-Dispatch VerificationThe product label, model reference, quantity and visible condition are checked against the confirmed order before packing.

Global Logistics CoordinationInternational express or freight arrangements are coordinated according to the destination, shipment size and confirmed delivery terms.

Important delivery information

Product availability, dispatch date, freight cost and delivery time depend on the confirmed order and destination. Packing lists, commercial invoices and available origin documentation can be prepared according to the confirmed order. Please contact AMIKON for current commercial and shipping details.

AMIKON Professional Services

Warranty, Sourcing and Global Export Support

With 20 years of experience in industrial automation, AMIKON supplies discontinued and hard-to-find DCS, PLC and TSI spare parts to customers worldwide.

01 · WARRANTY

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Products supplied by AMIKON include a standard 12-month warranty. Warranty handling is based on the confirmed order, product label, fault information and supporting photos or videos.

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AMIKON can coordinate domestic export customs procedures and arrange international express or sea freight. Packing lists, commercial invoices and available origin documentation can be prepared according to the confirmed order.

04 · TECHNICAL INFORMATION

Model and Specification Support

We assist customers with model identification, specification review, compatibility checks and Datasheet or manual searches. Support also includes distinguishing earlier and later model versions and checking whether a submitted model reference is complete and correctly written.

05 · PRE-DISPATCH CHECK

Product Verification Before Shipment

The product label, complete model, part number, quantity and visible condition are reviewed against the confirmed order before packing.

06 · INDUSTRIAL PACKAGING

Secure Packing for International Transit

Packaging is selected according to the component type, shipment size and transport method to support safe international handling.

07 · ORDER DOCUMENTATION

Commercial and Shipping Documents

Commercial invoices, packing lists and available origin information can be prepared according to the confirmed order and destination requirements.

08 · AFTER-SALES SUPPORT

Responsive Order Follow-Up

For order support, customers can provide the order reference, product label, issue description and clear photos for review by the AMIKON team.

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6ES7121-1BB00-0AA0

Technical Specifications

Frequently Asked Questions

Which station family is this electronic submodule intended for?

How should a technician verify the two input states during commissioning?

Can a two-wire sensor be connected to the input channel?

How quickly can the input status respond after the field signal changes?

Which supply rating should be confirmed before the module is installed?

How should the spare part be identified on a purchase order?

Which isolation value applies when the installation documentation is reviewed?

Payment and Worldwide Delivery

Order Confirmation

Product Preparation

International Shipping

Dispatch and Tracking

Support at Every Stage of Your Order

Warranty, Sourcing and Global Export Support

12-Month Product Warranty

Discontinued and Hard-to-Find Parts

One-Stop International Shipping

Model and Specification Support

Product Verification Before Shipment

Secure Packing for International Transit

Commercial and Shipping Documents

Responsive Order Follow-Up

Recommended Industrial Models

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