Electrical Connection

The ETHERNET bus module CI512-ETHCAT is plugged on the I/O terminal unit TU507-ETH or TU508-ETH. Properly seat the module and press until it locks in place. The terminal unit is mounted on a DIN rail or with 2 screws plus the additional accessory for wall mounting (TA526).

The electrical connection of the I/O channels is carried out using the 30 terminals of the I/O terminal unit. I/O modules can be replaced without re-wiring the terminal units.

Note

For a detailed description of the mounting, disassembly and electrical connection of the module, please refer to the System Assembly chapter AC500-eCo.

The terminals 1.8 and 2.8 as well as 1.9, 2.9 and 3.9 are electrically interconnected within the terminal unit and have always the same assignment, independent of the inserted module:

Terminals 1.8 and 2.8: Process supply voltage UP = +24 VDC

Terminal 3.8: Process supply voltage UP3 = +24 VDC

Terminals 1.9, 2.9 and 3.9: Process supply voltage ZP = 0 V

Note

With a separate UP3 power supply, the digital outputs can be switched off externally. This way, an emergency-off functionality can be realized.

The assignment of the other terminals:

Terminals Signal Description
1.0 to 1.7 DC0 to DC7 8 digital inputs/outputs (configurable via software)
2.0 to 2.7 DI0 to DI7 8 digital inputs (delay time configurable via software)
3.0 to 3.7 DO0 to DO7 8 digital outputs

Warning

:strong:Removal/Insertion under power

The devices are not designed for removal or insertion under power. Because of unforeseeable consequences, it is not allowed to plug or unplug devices with the power being ON.

Make sure that all voltage sources (supply and process voltage) are switched off before you

  • connect or disconnect any signal or terminal block
  • remove, mount or replace a module.

Disconnecting any powered devices while energized in a hazardous location could result in an electric arc, which could create a flammable ignition resulting in fire or explosion.

Make sure that power is removed and that the area has been thoroughly checked to ensure that flammable materials are not present prior to proceeding.

The devices must not be opened when in operation. The same applies to the network interfaces.

Attention

:strong:Risk of damaging the PLC modules!

Overvoltages and short circuits might damage the PLC modules.

  • Make sure that all voltage sources (supply and process voltage) are switched off before you begin with operations at the system.
  • Never connect any voltages or signals to reserved terminals (marked with —). Reserved terminals may carry internal voltages.

The following figures show the electrical connection of the ETHERNET bus module CI512-ETHCAT.

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Connection of the bus module CI512-ETHCAT

Note

In case of voltage feedback, 2 cases are distinguished:

1. The outputs are already active

The output group will be switched off. A diagnosis message will appear. After 5 seconds, the module tries automatic reactivation.

2. The outputs are not active

Only the output with voltage feedback will not be set to active. A diagnosis message will appear.

Caution

The process supply voltage must be included within the earthing concept of the plant (e. g. earthing of the minus pole).

The module provide several diagnosis functions CI512-ETHCAT.