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        • Lifecycle status

          Discontinued / Obsolete by OEM
          Quotations, manuals, and system-matching guidance for 6ES7650-1AK11-7XX0 are provided by Apter Power.

        6ES7650-1AK11-7XX0

        / 4.9
        1001 reviews ｜ Need a Specific Revision?
        Siemens 6ES7650-1AK11-7XX0 is a SIMATIC PCS 7 fail-safe discrete-input MTA that connects one or two ET 200M F-DI modules to 12 or 24 fused field channels.
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
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        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for 6ES7650-1AK11-7XX0

        • Manufacturer:
          Siemens
        • Part Number:
          6ES7650-1AK11-7XX0
        • Product Family:
          Siemens Simatic PCS 7 System
        • Product Type:
          12/24-Channel 24 V DC Fail-Safe Discrete Input MTA
        • Stock:
          1
        • Supported I/O Module:
          6ES7326-1BK02-0AB0, E-Stand 1 or higher
        • Channel Capacity:
          12 or 24 fail-safe discrete input channels
        • Field Supply:
          24 V DC
        • Power Input Range:
          21.6 to 28.8 V DC, single or redundant feed
        • Maximum Current at 24 V Inputs:
          1.482 A
        • Maximum Current at 0 V Inputs:
          1.002 A
        • Power Dissipation:
          3 W typical
        • Channel Fuse:
          0.05 A per channel
        • Module Fuse:
          2.0 A
        • Field Wire Size:
          24 to 14 AWG (0.205 to 2.08 mm²)
        • Module Connections:
          Dual connectors J1 and J2 for redundant I/O modules
        • Mounting:
          35 mm deep top-hat DIN rail
        • Operating Temperature:
          Horizontal: -25 to +70 °C; vertical: -25 to +60 °C
        • Humidity:
          5% to 95%, non-condensing
        • Safety Voting:
          Up to SIL 2 in 1oo1 or SIL 3 in 1oo2, subject to the corresponding I/O module
        • Channel Isolation:
          No isolation between channels or channel groups
        • Weight:
          1.459 lbs (0.662 kg)
        • Estimated shipping dimensions:
          25.9x13.7x8.4cm
        • Tariff Code:
          85389091
        • Country of origin:
          Romania
        • 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 Power Paths Field Wiring Redundant I/O Safety Limits

        Features:

        • Twenty-four field channels receive individually fused 24 V DC sensor power.
        • Dual module connectors support one-module or two-module fail-safe input arrangements.
        • Redundant A and B power inputs are diode-ORed before feeding module and channel circuits.
        The 6ES7650-1AK11-7XX0 separates field terminations, module connectors, power fuses, and shield grounding on a long-form MTA.

        Channel LEDs reflect the combined condition of supply power, the individual fuse, and the local disconnect switch.

        Safety capability depends on the connected F-DI modules and voting architecture; the termination assembly does not add channel isolation.

        The Siemens 6ES7650-1AK11-7XX0 12/24-Channel 24 V DC Fail-Safe Discrete Input MTA may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
        Siemens 6ES7650-1AK11-7XX0 12/24-Channel 24 V DC Fail-Safe Discrete Input MTA 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.

        Redundant Supply Distribution

        • A and B inputs: Two removable input connectors accept separate 24 V DC feeds.
        • Diode OR path: The two feeds combine through diode isolation so either source can energize the MTA.
        • Module branches: Separate fuses feed the F-DI modules connected at J1 and J2.
        • Channel branches: Individual 0.05 A fuses distribute field power to each channel independently.

        Channel Terminal Relationships

        • CHx+ terminal: The positive terminal supplies fused 24 V DC to the field device.
        • CHx- terminal: The return signal travels from the field device toward the F-DI module input.
        • Shield terminal: Each channel group provides shield termination tied through the documented grounding arrangement.
        • Disconnect switch: Local switches remove field power from their assigned channel groups without changing terminal wiring.

        One- and Two-Module Operation

        • J1 connection: The first fail-safe input module receives signals and power through J1.
        • J2 connection: A second module connects through J2 when the system uses redundant I/O.
        • Single-module mode: A non-redundant system installs one module on either supported connector.
        • Voting boundary: Achievable SIL and category depend on the connected module arrangement, not on the MTA alone.

        Documented Design Restrictions

        • Sensor redundancy: Two redundant sensors cannot be connected to one MTA channel.
        • Channel isolation: Channels and channel groups do not have galvanic isolation from each other.
        • Cross-circuit detection: Certain cross circuits are not detected when the module sensor supply is not used.
        • Mounting temperature: Horizontal mounting permits the higher documented maximum of +70 °C; vertical mounting is limited to +60 °C.
        Description
        Siemens 6ES7650-1AK11-7XX0 is a 12/24-channel, 24 V DC fail-safe discrete-input marshalled termination assembly for SIMATIC PCS 7. It connects field devices to the ET 200M F-DI module 6ES7326-1BK02-0AB0 and organizes power, signal, shield, and module connections on one DIN-rail assembly.

        Two removable supply connectors feed 6ES7650-1AK11-7XX0. The A and B inputs are diode-ORed so either source can power the assembly, after which separate module fuses feed J1 and J2 and individual 0.05 A fuses feed each channel's 24 V field supply.

        At each field position, 6ES7650-1AK11-7XX0 provides CHx+, CHx-, and shield connections. CHx+ delivers fused sensor power, CHx- returns the discrete signal toward the installed F-DI module, and the channel LED stays on only when power is present, the fuse is intact, and the disconnect switch is closed.

        For redundant operation, 6ES7650-1AK11-7XX0 connects one F-DI module to J1 and another to J2. The assembly supports documented safety voting through the corresponding modules, but the MTA does not isolate channels from one another and cannot connect two redundant sensors to one channel.
        Alternative Names
        6ES76501AK117XX0 6ES7650 1AK11 7XX0 6ES 7650 1AK11 7XX0 Siemens 6ES7650-1AK11-7XX0 6ES7650-1AK11-7XX0 F-DI MTA 6ES765O-1AK11-7XX0 6ES7650-IAK11-7XX0 6ES7650 1AK11 7XX0 PCS 7 MTA
        Technical notes
        Siemens 6ES7650-1AK11-7XX0 routes redundant 24 V DC power and fused field wiring between 24 channels and one or two ET 200M fail-safe input modules.
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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.
        VIEW ALL FAQS
        How does 6ES7650-1AK11-7XX0 keep operating if one 24 V DC feed is lost?
        The A and B inputs of 6ES7650-1AK11-7XX0 are diode-ORed, so the remaining valid feed can continue powering the MTA, modules, and channel branches.
        What does an unlit channel LED mean on 6ES7650-1AK11-7XX0?
        On 6ES7650-1AK11-7XX0, the channel LED is off when field power is absent, the channel fuse is open, or the assigned disconnect switch is open.
        Can 6ES7650-1AK11-7XX0 connect two redundant sensors to one channel?
        No. The documented 6ES7650-1AK11-7XX0 MTA restriction does not permit two redundant sensors to share one channel.
        Why are J1 and J2 both provided on 6ES7650-1AK11-7XX0?
        J1 and J2 let 6ES7650-1AK11-7XX0 connect one fail-safe input module for a single path or two modules for the documented redundant I/O arrangement.
        Where should the field cable shield terminate on 6ES7650-1AK11-7XX0?
        The field shield uses the assigned shield terminal on 6ES7650-1AK11-7XX0 and the assembly ground stud; the documented jumper controls the MTA-side shield connection.
        Does 6ES7650-1AK11-7XX0 provide isolation between channels?
        No. 6ES7650-1AK11-7XX0 has no isolation between channels or channel groups, which must be considered when planning field wiring and fault detection.
        Why does mounting direction matter for 6ES7650-1AK11-7XX0?
        The maximum operating temperature for 6ES7650-1AK11-7XX0 is +70 °C horizontally but +60 °C vertically, so cabinet layout changes the thermal limit.

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