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ABB TK850V007 CEX Bus expansion cable Installation and configuration method

来源: | 作者:FAN | 发布时间 :2025-07-09 | 22 次浏览: | Share:

ABB TK850V007 CEX Bus expansion cable Installation and configuration method

Preparation before installation

Check product integrity: Confirm that the length of the TK850V007 expansion cable is 0.7 meters and that the matching CEX Bus terminator TK851 is intact and undamaged.

Tool preparation: Prepare a suitable screwdriver (for operating the DIN rail locking device) and insulated gloves (to ensure safe operation).

Environmental requirements: Ensure that the installation environment meets the working environment standards of the AC 800M controller, with a temperature between -25 ° C and+55 ° C and a relative humidity of<93% (no condensation).

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Installation steps

Power off operation

Before installation, the power supply of the AC 800M controller and related equipment must be disconnected to avoid electric shock or equipment damage.

Positioning installation location

Determine the connection location of the CEX Bus expansion cable, typically used to connect two CEX Bus segments or extend the length of the CEX Bus. Ensure that the cable path is not stretched or excessively bent, and avoid approaching strong electromagnetic interference sources such as motors and transformers.


Connecting cables

Connect one end of the cable to the output port of the existing CEX Bus device and the other end to the input port of the expansion device, ensuring that the plug is fully inserted and locked.

If used to connect two CEX Bus network segments, terminal TK851 (female end) should be installed at both ends of the cable to ensure signal stability.

Fixed cable

Use cable ties or clamps to secure cables to DIN rails or cabinets, avoiding loose connections caused by vibration.

power restoration

After confirming that all connections are correct, reconnect the power and check the operating status of the CEX Bus device (using LED indicator lights to determine if it is working properly).


Configuration points

Terminal settings

When using the TK850V007 expansion cable, a TK851 terminator must be installed at the female end of the cable to prevent signal reflection and interference.

If the extension cable is connected to a redundant CEX Bus structure, it is necessary to ensure that the terminal is correctly installed on both ends of the redundant network segment.

System Verification

After power on, check the CEX Bus communication status through the diagnostic function of the controller or the front panel indicator lights to ensure there are no error codes or alarm signals.

Use Control Builder software to verify whether the extended CEX Bus device is correctly recognized by the system, and confirm that the communication rate and data transmission are normal.


Redundant configuration (if applicable)

If used for redundant systems, CEX Bus redundancy parameters need to be configured in Control Builder to ensure uninterrupted data transmission when switching between primary and backup network segments.

Check the switching time and stability of redundant links to ensure compliance with system design requirements.


Precautions

Cable length limit: The maximum length of TK850V007 is 0.7 meters and cannot be used in series with other extension cables to extend the length, otherwise it will cause signal attenuation.

Avoid ignition limit: The network segment configuration after CEX Bus expansion must not be within the ignition limit range of the device, and safety parameters in the device manual should be referred to.

Hot swappable restriction: Cables cannot be plugged or unplugged while live, and must be operated with power off, otherwise it may cause equipment damage or data loss.

Grounding requirements: Ensure that the cable shielding layer is properly grounded to reduce electromagnetic interference and improve communication stability.

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