IC693CBL314 Expansion Cable (15 meters / 50 feet)

General Overview:

    The IC693CBL314 is a 15-meter (50 feet) expansion cable used to connect multiple expansion backplanes to a main backplane in a daisy-chain configuration. It supports up to seven expansion backplanes in an I/O bus system.
    It can also be utilized for custom point-to-point cables (like IC693CBL300), and wiring information is provided to help create such cables if needed.

Termination Requirements:

    These cables do not have built-in termination. Therefore, the last cable in the expansion system must be terminated properly to ensure signal integrity and stable system operation.
    Terminator Plug (IC693ACC307): This plug should be installed on the last expansion backplane's open connector to terminate the I/O expansion bus.
    The maximum number of cables is seven, and the total cable length between the Universal Backplane and the last expansion backplane must not exceed 15 meters (50 feet). Exceeding this limit can lead to erratic system behavior.

Cable Specifications:

    Cable Type: Belden 8107 (no substitutes allowed)
    Construction: Overall braid over foil shield, twisted pair
    Voltage Rating: 30 volts
    Temperature Rating: 80°C (176°F)
    Wire Gauge: 24 AWG (0.22 mm²), tinned copper
    Velocity of Propagation: 70%
    Nominal Impedance: 100 Ohms

Connector Types:

    Crimp Plug: Amp 207464–1; Pin Male Connector: Amp 66506–925
    Solder Plug: Amp 747912–2
    Crimp Receptacle: Amp 207463–2; Pin Female Connector: Amp 66504–925
    Connector Shell Kit: Amp 745833–5 (metal-plated plastic)
    Crimp Ring: Amp 745508–1, split-ring ferrule

Pin Assignments and Signal Functions:

The cable connects signals between backplanes using the following pin assignments:

    Pin 16 & 17: DIODT (I/O Serial Data Positive & Negative)
    Pin 24 & 25: DIOCLK (I/O Serial Clock Positive & Negative)
    Pin 20 & 21: DRSEL (Remote Select Positive & Negative)
    Pin 12 & 13: DRPERR (Parity Error Positive & Negative)
    Pin 8 & 9: DRMRUN (Remote Run Positive & Negative)
    Pin 2 & 3: DFRAME (Cycle Frame Positive & Negative)
    Pin 1: FGND (Frame Ground for Cable Shield)
    Pin 7: 0V (Logic Ground)

Building Custom Cables for Noise Immunity:

To achieve the best possible noise immunity, a metalized connector cover should be used. This ensures proper contact with the cable’s braided and foil shielding across the entire length of the cable, including terminations.

Steps to Build a 100% Shielded Cable:

    Strip approximately 5/8 inch of insulation from the cable to expose the shield.
    Place a split-ring ferrule over the cable insulation.
    Fold the shield back over the ferrule and insulation.
    Secure the metal hood over the shield and clamp it tightly.
    Test for continuity: Use an ohmmeter to check for continuity between the connector shells. Flex the cable at both ends to ensure the shield is properly connected.

System Termination:

    When connecting two or more backplanes, the I/O expansion bus must be properly terminated to avoid communication issues. The IC693ACC307 termination resistor pack is installed on the open connector of the last backplane in the system.
    If a prewired 50-foot (15 meters) cable like the IC693CBL302 is used, the termination resistors are built into the cable, and a separate termination resistor pack is not needed.

By following these guidelines and ensuring proper termination and grounding, the IC693CBL314 cable can ensure stable and reliable communication between expansion backplanes in an I/O bus system.

>> IC693CBL314 cables User manual (pdf)

++ Other 90-30 PLC modules

----------

+ Ge-Fanuc 2 Homepage

+ Ge-Fanuc Contact (for Automation Mall)

+ About Ge-Fanuc