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          Apter Power can assist with pricing and sourcing options for IC655MDL512 when a matching grouped-input spare is required.

        IC655MDL512

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        1001 reviews ｜ Need a Specific Revision?
        For mixed 12–24 VAC/DC positive-logic signals, the IC655MDL512 organizes thirty-two inputs into four eight-point groups with visible channel status.
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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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        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.
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        Technical specifications for IC655MDL512

        • Manufacturer:
          General Electric
        • Part Number:
          IC655MDL512
        • Product Family:
          GE Intelligent Platforms
        • Product Type:
          12–24 VAC/DC Positive-Logic 32-Circuit Input Module
        • Stock:
          1
        • Product family:
          Series Five PLC
        • Input logic:
          Positive logic, AC or DC
        • Input points:
          32
        • Circuit grouping:
          Four groups of 8
        • Operating voltage:
          10.2–26.4 VAC or VDC
        • Input current:
          10 mA at 24 VAC/DC
        • ON/OFF levels:
          10 V ON; 3 V OFF
        • Response time:
          5–30 ms ON; 10–50 ms OFF
        • Field connection:
          Removable terminal block
        • Internal current:
          160 mA typical; 180 mA maximum
        • Weight:
          1.65 lbs (0.75 kg)
        • Estimated shipping dimensions:
          3.8 × 25.4 × 12.7 cm
        • Tariff Code:
          8538900000
        • Country of origin:
          USA
        • 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 Input Voltage Bands Ambient Limits Group LEDs Four-Bank Wiring

        Features:

        • Thirty-two positive-logic channels accept compatible low-voltage AC or DC input sources.
        • Four eight-point banks each use one shared common for organized field referencing.
        • Status indicators support point observation and starting-address confirmation at the rack.
        IC655MDL512 is useful where low-voltage AC and DC sensing must coexist by group, provided each eight-point bank keeps a clearly identified source type and common.

        A whole bank failing together directs the investigation toward its shared reference, while one missing signal should be traced through the field device and assigned terminal.

        Commissioning should establish the starting address first, then verify bank sources and representative channel transitions before the full input set is returned to automatic control.

        General Electric IC655MDL512 12–24 VAC/DC Positive-Logic 32-Circuit Input Module may be available for purchase and support from Apter Power.
        General Electric IC655MDL512 12–24 VAC/DC Positive-Logic 32-Circuit Input Module Manuals, Datasheets, Links 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.

        Assigning AC and DC Sources by Bank

        • Source type: Identify whether each eight-point group receives AC or DC before field conductors are landed.
        • Positive logic: Match the field-device switching direction to the common and input arrangement.
        • Separate banks: Different groups may use independent compatible sources when their commons stay correctly assigned.
        • Voltage under load: Measure at the terminal block while the circuit operates to expose supply drop.

        Maintaining Reliable Grouped Inputs

        • Ambient check: Use the temperature at the occupied rack, including heat from neighboring modules.
        • On-point load: Consider how many channels remain energized together during the machine cycle.
        • Wire separation: Keep low-voltage AC and DC bank conductors identified and routed consistently.
        • Ventilation: Preserve clearance around the rack so heat does not accumulate across the input modules.

        Separating a Point Fault from a Group Fault

        • Single signal: Compare the field voltage and matching LED before reviewing controller logic.
        • Eight signals: Test the bank common and source because both are shared by the group.
        • Address display: Confirm the starting I/O address when the LED pattern and PLC table do not align.
        • Controlled baseline: Record normal bank activity so later maintenance can identify an abnormal group loss.

        Preserving Four Common-Based Wiring Sections

        • Bank labels: Mark A through D and every associated conductor before the block is released.
        • Common identity: Keep each group common with its own eight field inputs.
        • Mechanical keying: Retain the positions that prevent the wired block from mating with a different module type.
        • Sequential test: Restore one bank at a time and compare all eight points with the controller map.
        Description
        General Electric IC655MDL512 is a Series Five 32-circuit positive-logic input module for compatible 12–24 VAC or DC signals. Its channels are organized as four banks of eight, each using a shared common for its field reference.

        The grouped arrangement allows different low-voltage source types to be assigned by bank when their commons remain clearly separated. It also gives supply faults a physical boundary, since one lost reference can affect eight points without disturbing the other three banks.

        Channel LEDs show detected states and the module can display its configured starting address. The combination of bank identity, source type and address range links the terminal wiring to the controller input map more reliably than point numbers alone.
        Alternative Names
        IC 655 MDL 512 IC655-MDL512 IC655MDL-512 IC655MDLS12 IC655MDL5I2 GE IC655MDL512 GE Fanuc IC655MDL512 Series Five IC655MDL512
        Technical notes
        IC655MDL512 uses four shared commons, not sixteen isolated pairs. De-energize every AC/DC source before terminal-block removal, preserve bank identity and keying, and verify all four groups after replacement.
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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
        Can IC655MDL512 use AC and DC inputs in the same rack?
        On IC655MDL512, yes. Its groups accept compatible low-voltage AC or DC sources; keep every bank’s source type, common and wiring clearly identified.
        What should be checked when one IC655MDL512 bank is inactive?
        During IC655MDL512 troubleshooting, begin with the shared common and field supply for that eight-point group. A bank-wide supply interruption can remove eight signals at once.
        Do the thirty-two IC655MDL512 inputs have individual commons?
        With IC655MDL512 in service, no. The inputs are arranged in four groups, each with one common shared by eight circuits. This differs from the individually isolated IC655MDL511 layout.
        How can the IC655MDL512 starting address be confirmed?
        For an installed IC655MDL512, command the indicator set to show the starting I/O address and compare it with the configured Series Five rack map before tracing individual conductors.
        What information is needed before replacing IC655MDL512?
        Before returning IC655MDL512 to service, record the slot, starting address, four common terminals, source type for each bank and terminal-block key positions. Do not assume all groups use the same supply.
        How should AC and DC banks be restored on IC655MDL512?
        For IC655MDL512, energize one group at a time and verify its eight indicators and controller points. Keep AC and DC source conductors separated and identified throughout the test.
        What does an active IC655MDL512 LED prove?
        When checking IC655MDL512, it proves the field signal has crossed the module input threshold. If the PLC table disagrees, investigate address configuration and rack mapping next.

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