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6ES7961-3AA00-0AC0

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Siemens 6ES7961-3AA00-0AC0 is the SIMATIC M7 IF 961-CT1 single-channel high-speed counter. It evaluates 5 V differential encoder signals to 500 kHz or 24 V pulse signals to 200 kHz and provides two comparison outputs.
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Technical specifications for 6ES7961-3AA00-0AC0

  • Manufacturer:
    Siemens
  • Part Number:
    6ES7961-3AA00-0AC0
  • Product Family:
    SIMATIC M7
  • Product Type:
    High-Speed Counter Submodule
  • Stock:
    1
  • Counter channels:
    1
  • Unsigned range:
    0 to 4,294,967,295
  • Signed range:
    -2,147,483,648 to +2,147,483,647
  • Maximum frequency at 5 V:
    500 kHz
  • Maximum frequency at 24 V:
    200 kHz
  • Counting modes:
    Endless, single or periodic
  • Counting directions:
    Up or down
  • Comparison values:
    2
  • Output current range:
    5 mA to 0.3 A
  • Output protection:
    Electronic short-circuit protection
  • Digital control inputs:
    4
  • Input filter choices:
    50 kHz or 200 kHz
  • 5 V interface:
    Differential, minimum 0.5 V
  • 24 V logic 0:
    -30 to +5 V
  • 24 V logic 1:
    +11 to +30 V
  • Typical 24 V input current:
    7 mA
  • Supported encoders:
    Incremental encoder A/B/N and 24 V pulse source
  • Submodule identifier:
    03H
  • M7-300 current consumption:
    0.053 A at 24 V
  • M7-400 current consumption:
    0.15 A at 5 V
  • Power loss:
    1.5 W
  • Weight:
    0.154 lbs (0.07 kg)
  • Estimated shipping dimensions:
    18.2 x 67 x 97 mm
  • Tariff Code:
    Please confirm the destination before shipping.
  • 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 Applications Control Diagnostics & Protection Performance

Features:

  • Counts one high-speed encoder or pulse channel across a full 32-bit range.
  • Provides two threshold comparisons with two protected local outputs.
  • Supports event interrupts for zero, limits, overflow and underflow conditions.
This part is the IF 961-CT1 counter interface with submodule identification 03H.

It converts encoder position or pulse accumulation into time-critical M7 application data.

Encoder voltage class, filter, direction, gates and preset values must be taken from the original hardware configuration.

Apter Power can review sourcing, documentation and system matching for 6ES7961-3AA00-0AC0.
Verified resources for Siemens 6ES7961-3AA00-0AC0: 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.
  • Packaging axes can monitor incremental encoder travel while using comparisons for registration events.
  • Flow or production counters accumulate high-rate pulses beyond the range of standard digital inputs.
  • Test rigs use gated periodic counting to measure frequency or movement during a defined sampling window.
  • Software and hardware gates determine when counting is enabled.
  • Two comparison thresholds can independently control the local output functions.
  • Interrupts report zero crossing, comparison events, overflow and underflow to the M7 program.
  • Diagnostics cover parameter faults and loss of an expected interrupt condition.
  • The 5 V differential interface includes sensor-line monitoring for the encoder tracks.
  • Both output channels include electronic protection against a short circuit.
  • Differential 5 V signals can be counted at frequencies up to 500 kHz.
  • The 24 V input path supports counting rates up to 200 kHz.
  • Signed and unsigned 32-bit formats accommodate both directional position and large total values.
Description
6ES7961-3AA00-0AC0 counts signed or unsigned pulses over a 32-bit range and supports endless, one-shot or periodic operation in either direction. Inputs accept incremental encoder tracks or discrete 24 V counting signals.

Two comparison values can drive the pair of local outputs, while hardware and software gates control the measurement interval. Interrupts are available for comparison events, zero crossing, overflow and underflow.

Signal level, maximum pulse rate, encoder supply and gate wiring must match the selected mode. Restoring the original presets, comparison thresholds and direction settings is essential because a running counter replacement cannot infer them from the connector alone.
Alternative Names
6ES7961-3AA00-0AC0 Siemens 6ES7961-3AA00-0AC0 6ES7 961-3AA00-0AC0 6ES79613AA000AC0 IF 961-CT1 Siemens IF961 CT1 SIMATIC M7 Counter Module 6ES7961-3AA00-0AC0 High-Speed Counter
Technical notes
Remove motion and save presets before replacing 6ES7961-3AA00-0AC0; an incorrect count direction or gate mode can create an unsafe position reference.
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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.
Which encoder rates can Siemens 6ES7961-3AA00-0AC0 accept?
The limit is 500 kHz for the 5 V differential interface and 200 kHz for 24 V signals.
What counting sequences are available in Siemens 6ES7961-3AA00-0AC0?
The module supports endless, single and periodic operation with up or down counting.
How can Siemens 6ES7961-3AA00-0AC0 control a local action at a count threshold?
Two programmable comparison values can operate the two protected digital outputs.
Which motion data must be backed up before a Siemens 6ES7961-3AA00-0AC0 exchange?
Save preset, direction, encoder type, gate, filter, comparison and interrupt settings.
What replacement risk exists with Siemens 6ES7961-3AA00-0AC0?
Wrong signal voltage, phase order or count direction can corrupt the position reference even when the card powers up.
Which encoder and carrier details identify Siemens 6ES7961-3AA00-0AC0 for procurement?
Provide the full order number, encoder electrical type, maximum pulse rate, carrier system and destination.