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SIEMENS SIMATIC S7-1200 6ES7221-3AD30-0XB0 SB 1221 4 DI 5 V DC 200 kHz | Original New

SIEMENS SIMATIC S7-1200 6ES7221-3AD30-0XB0 SB 1221 4 DI 5 V DC 200 kHz | Original New

SIEMENS · SIMATIC S7-1200

6ES7221-3AD30-0XB0

SB 1221 4 DI 5 V DC 200 kHz

DIGITAL INPUTS 4 current-sourcing channels	RATED INPUT 5 V DC
MAXIMUM RATE 200 kHz	DIMENSIONS 38 × 62 × 21 mm
LEAD TIME In stock	WARRANTY 1 year

Email Inquiry [email protected]

WhatsApp +86 18159889985

Appurtenance:

siemens simatic s7 1200 6es7221 3ad30 0xb0 sb 1221 4 di 5 v dc 200 khz original new-1

Overview
Technical Data
Inquiry
Applications
Interfaces
Functions
Installation
FAQ
Recommend Models
Recommended Products

HIGH-SPEED DIGITAL INPUTS

Four 5 V DC sourcing inputs for fast S7-1200 signals

The SB 1221 signal board adds four 5 V DC current-sourcing digital inputs directly to a compatible S7-1200 CPU. Its 200 kHz capability and parameterizable input delay support high-speed pulse and event acquisition in a compact CPU-mounted format.

4 INPUTS
Four current-sourcing digital channels.

200 kHz
High-speed acquisition for pulse signals.

CPU-MOUNTED
Signal board plugs directly into the CPU.

Technical Data

VERIFIED PRODUCT SPECIFICATION

Complete model	6ES7221-3AD30-0XB0
Product family	SIMATIC S7-1200 / SB 1221
Product type	Digital input signal board
Dimensions	38 × 62 × 21 mm
Weight	35 g
Digital inputs	4, current-sourcing
Rated input voltage	5 V DC
Maximum input rate	200 kHz
Backplane-bus current	40 mA at 5 V DC, typical
Power loss	1 W, typical
Input current, signal 1	5.1 mA minimum; 15 mA typical
Input current, signal 0	2.2 mA maximum
Shielded cable length	50 m maximum, twisted pair
Status indication	LEDs for input status
Operating temperature	−20–60 °C horizontal; −20–50 °C vertical
Storage / transport	−40–70 °C
Relative humidity	95% at 25 °C, non-condensing
Approvals	CE, CSA, UL, cULus, FM, RCM, KC, marine

Inquiry

CONTACT
STELLA

Email Inquiry [email protected]

WhatsApp +86 18159889985

Applications

APPLICATION PROFILE
Product-specific engineering uses

The SB 1221 is intended for compact, high-speed 5 V digital sensing directly at the S7-1200 CPU.

PULSE COUNTING	Acquire fast pulse trains from compatible 5 V sourcing devices.
POSITION EVENTS	Capture rapid state changes from encoders or machine sensors.
COMPACT EXPANSION	Add four inputs without installing a separate side-mounted signal module.
TEST SYSTEMS	Observe precisely timed 5 V input events in laboratory automation.

Interfaces

CONSTRUCTION AND CONNECTIONS

01	Four inputs	Four current-sourcing digital inputs operate as one group.
02	5 V DC signaling	Input thresholds and currents are specified for the 5 V circuit.
03	CPU connection	The signal board plugs directly into the compatible S7-1200 CPU.
04	Cable routing	Shielded twisted-pair cable length is specified up to 50 m.
05	Status LEDs	Individual indication supports quick observation of input states.

Functions

FUNCTIONAL CAPABILITIES

01 · High-speed acquisition
Accepts input frequencies up to 200 kHz for suitable pulse sources.

02 · Delay selection
Input delay can be parameterized from microsecond to millisecond ranges.

03 · Interrupt use
Inputs can be configured for interrupt and technology functions.

04 · Status monitoring
Integrated LEDs indicate channel state during commissioning.

05 · Compact expansion
Adds digital inputs without increasing the side-module width.

Installation

INSTALLATION WORKFLOW

1 Verify signal Confirm a 5 V DC current-sourcing source and required 200 kHz capability.	2 Power down De-energize the CPU before installing the signal board.
3 Wire Use the specified terminal arrangement and shielded twisted pair where required.	4 Parameterize Set delay, interrupt and technology options in the hardware configuration.

FAQ

PURCHASING AND ENGINEERING CHECKS
Six checks for 6ES7221-3AD30-0XB0

Q1 · How can I verify the exact quoted model?

Require a label image showing 6ES7221-3AD30-0XB0 and SB 1221. Confirm 4 DI, 5 V DC, 200 kHz and current-sourcing input; the 24 V variant has a different order number.

Q2 · How can I distinguish new, used and refurbished stock?

Inspect current photos of the terminal block, gold-plated contacts, housing and label. Scratched terminals, solder residue or replaced labels should be explained in writing.

Q3 · How should a buyer assess supplier legitimacy?

Verify the supplier legal entity, beneficiary account and traceable quotation. Require exact-model photographs, serial or batch identification and agreed inspection terms.

Q4 · What should an engineer verify before ordering?

Check compatible CPU, 5 V sourcing signal type, four-channel count, 200 kHz requirement, input-current limits, cable length and parameterized delay.

Q5 · What evidence should be requested before payment?

Request timestamped images of the exact label, terminals, contacts and packaging plus written confirmation of condition, included terminal block, test scope and warranty.

Q6 · Can the 24 V SB 1221 replace this board?

Not without redesign. 6ES7221-3BD30-0XB0 uses 24 V DC input levels; sensor voltage, thresholds and project configuration must match the selected board.

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