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    Apter Power supplies quotations, manuals and axis-configuration review for Siemens 6ES7451-3AL00-0AE0.

6ES7451-3AL00-0AE0

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Siemens 6ES7451-3AL00-0AE0 is a SIMATIC S7-400 FM 451 positioning module for three rapid/slow traverse drive channels.
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Technical specifications for 6ES7451-3AL00-0AE0

  • Manufacturer:
    Siemens
  • Part Number:
    6ES7451-3AL00-0AE0
  • Product Family:
    Siemens Simatic S7-400
  • Product Type:
    FM 451 Three-Channel Positioning Module
  • Stock:
    1
  • Rated Supply:
    24 V DC
  • Current Consumption:
    550 mA typical
  • Power Loss:
    3.6 W typical
  • Positioning Channels:
    3
  • Digital Inputs:
    12; 4 per axis
  • Digital Outputs:
    12; 4 per axis
  • Output Protection:
    Short-circuit protected
  • Output Current:
    600 mA maximum at 0 to 55 °C
  • 5 V Encoder Supply:
    210 mA maximum; 35 m cable
  • 24 V Encoder Supply:
    300 mA maximum; 100 m cable
  • Encoder Types:
    Symmetrical incremental, asymmetrical incremental and SSI absolute
  • Symmetrical Incremental Frequency:
    1 MHz maximum
  • Asymmetrical Incremental Frequency:
    50 kHz at 25 m; 25 kHz at 100 m
  • SSI Telegram:
    13 or 25 bit serial; Gray code supported
  • SSI Clock:
    1.25 MHz maximum
  • SSI Cable Length:
    300 m maximum at 156 kbit/s
  • Signal Isolation:
    Digital inputs and outputs are potential-separated
  • Required Front Connector:
    1× 48-pin
  • Operating Temperature:
    0 to 55 °C
  • Storage / Transport Temperature:
    -40 to +70 °C
  • Weight:
    2.866 lbs (1.3 kg)
  • Estimated shipping dimensions:
    30.1×23.3×6.3cm
  • Tariff Code:
    85389091
  • Country of origin:
    Germany
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Axis Partition Encoder Choice Cam Inputs Travel Outputs

Features:

  • Three channels organize rapid/slow traverse positioning on one S7-400 module.
  • Each axis receives four inputs and four short-circuit-protected outputs.
  • Incremental and SSI encoder paths cover pulse and absolute feedback formats.
The three-channel structure keeps cam inputs, encoder feedback and travel commands aligned by axis.

Output states distinguish rapid traverse, creep and the two travel directions for each connected drive.

Potential separation applies to both digital-input and digital-output groups before the 48-pin field connector.

The Siemens 6ES7451-3AL00-0AE0 FM 451 Positioning Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6ES7451-3AL00-0AE0 FM 451 Positioning Module Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

Keeping three motion channels distinct

  • Channel Count: Three positioning channels share the FM 451 hardware.
  • Input Partition: Four digital inputs are assigned to each axis.
  • Output Partition: Four digital outputs are assigned to each axis.
  • Field Boundary: The combined axis signals terminate through one 48-pin connector.

Matching pulse and absolute feedback

  • Differential Incremental: A, not-A, B, not-B, N and not-N signals run to 1 MHz.
  • Single-Ended Incremental: A, B and N use 24 V signaling with a rate tied to cable length.
  • Absolute Feedback: SSI accepts differential DATA and clock pairs.
  • Code Format: SSI telegrams use 13 or 25 bits and support Gray code.

Position-reference signal flow

  • Reference Cam: One input function establishes the axis reference event.
  • Reversing Cam: A separate input function marks the travel reversal boundary.
  • Actual-Value Capture: Flying actual-value setting records the moving position reference.
  • Sequence Control: Start and stop positioning complete the documented input set.

Converting a target into drive states

  • Rapid Command: One output selects rapid traverse for the active axis.
  • Creep Command: A separate output selects the slower approach state.
  • Right Direction: Run-right is issued independently of the speed selection.
  • Left Direction: Run-left provides the opposite travel command.
Description
Siemens 6ES7451-3AL00-0AE0 is the SIMATIC S7-400 FM 451 positioning module for rapid/slow traverse drives. Three positioning channels share one module while keeping the signal set organized as four digital inputs and four digital outputs per axis.

The output side of 6ES7451-3AL00-0AE0 assigns rapid traverse, creep, run-right and run-left states to each channel. The twelve short-circuit-protected outputs therefore translate positioning decisions into the directional and speed commands used by the connected drives.

Feedback for 6ES7451-3AL00-0AE0 can come from symmetrical incremental, asymmetrical incremental or SSI absolute encoders. Symmetrical differential signals run to 1 MHz, while SSI uses 13- or 25-bit serial telegrams and supports Gray code.

The twelve isolated inputs on 6ES7451-3AL00-0AE0 cover reference cams, reversing cams, flying actual-value setting and start/stop positioning. All field signals and encoder paths meet the module through one 48-pin front connector.
Alternative Names
Siemens FM 451 SIMATIC S7-400 FM451 6ES74513AL000AE0 6ES7 451-3AL00-0AE0 6ES7451-3ALOO-OAEO FM451 6ES74513AL000AE0 S7-400 Three-Channel Positioning Module 6ES7451 3AL00 0AE0
Technical notes
6ES7451-3AL00-0AE0 is the three-channel FM 451 for rapid/slow traverse drives. Match the encoder format, 48-pin connector and per-axis I/O allocation.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
How many motion channels can 6ES7451-3AL00-0AE0 handle when the module count is being planned?
One 6ES7451-3AL00-0AE0 manages three positioning channels, with four digital inputs and four digital outputs assigned to each axis.
Which encoder signal types must be matched before wiring 6ES7451-3AL00-0AE0?
Feedback wiring to 6ES7451-3AL00-0AE0 may use symmetrical incremental, asymmetrical incremental or SSI absolute encoder signals.
Why can a long SSI cable become unreliable with 6ES7451-3AL00-0AE0?
At 156 kbit/s, 6ES7451-3AL00-0AE0 supports an SSI cable length up to 300 m; a different transfer rate changes the documented wiring boundary.
Which four drive commands must be mapped for every axis on 6ES7451-3AL00-0AE0?
For each axis on 6ES7451-3AL00-0AE0, map rapid traverse, creep, run-right and run-left to the four output functions.
What front connector must be available before 6ES7451-3AL00-0AE0 is installed?
Installation of 6ES7451-3AL00-0AE0 requires one 48-pin front connector for the encoder, digital-input and digital-output wiring boundary.