Electrical Connection¶
The ETHERNET bus module CI522-MODTCP is plugged on the I/O terminal unit TU507-ETH TU507-ETH and TU508-ETH for ETHERNET Communication Interface Modules or TU508-ETH TU507-ETH and TU508-ETH for ETHERNET Communication Interface Modules. 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 TA526 - Wall Mounting Accessory).
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, Construction and Connection chapter AC500 (Standard).
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.
Note
Do not connect any voltages externally to digital outputs!
This ist not intended usage.
Reason: Externally voltages at one or more terminals DC0…DC7 or DO8…DO15 may cause that other digital outputs are supplied through that voltage instead of voltage UP3 (reverse voltage).
This is also possible, if DC channels are used as inputs. For this, the source for the input signals should be the impressed UP3 of the device.
This limitation does not apply for the input channels DI0..DI7.
Caution
:strong:Risk \ of malfunction by not intended usage!
If the function cut off of the digital outputs should be used by deactivation of the supply voltage UP3, be sure that no external voltage is conncted at the outputs DO8…DO15 and DC0…DC7.
The assignment of the other terminals:
| Terminal | Signal | Description |
|---|---|---|
| 1.0 | DC0 | Signal of the configurable digital input/output DC0 |
| 1.1 | DC1 | Signal of the configurable digital input/output DC1 |
| 1.2 | DC2 | Signal of the configurable digital input/output DC2 |
| 1.3 | DC3 | Signal of the configurable digital input/output DC3 |
| 1.4 | DC4 | Signal of the configurable digital input/output DC4 |
| 1.5 | DC5 | Signal of the configurable digital input/output DC5 |
| 1.6 | DC6 | Signal of the configurable digital input/output DC6 |
| 1.7 | DC7 | Signal of the configurable digital input/output DC7 |
| 1.8 | UP | Process voltage UP (24 VDC) |
| 1.9 | ZP | Process voltage ZP (0 VDC) |
| 2.0 | DI8 | Signal of the digital input DI8 |
| 2.1 | DI9 | Signal of the digital input DI9 |
| 2.2 | DI10 | Signal of the digital input DI10 |
| 2.3 | DI11 | Signal of the digital input DI11 |
| 2.4 | DI12 | Signal of the digital input DI12 |
| 2.5 | DI13 | Signal of the digital input DI13 |
| 2.6 | DI14 | Signal of the digital input DI14 |
| 2.7 | DI15 | Signal of the digital input DI15 |
| 2.8 | UP | Process voltage UP (24 VDC) |
| 2.9 | ZP | Process voltage ZP (0 VDC) |
| 3.0 | DO8 | Signal of the digital output DO8 |
| 3.1 | DO9 | Signal of the digital output DO9 |
| 3.2 | DO10 | Signal of the digital output DO10 |
| 3.3 | DO11 | Signal of the digital output DO11 |
| 3.4 | DO12 | Signal of the digital output DO12 |
| 3.5 | DO13 | Signal of the digital output DO13 |
| 3.6 | DO14 | Signal of the digital output DO14 |
| 3.7 | DO15 | Signal of the digital output DO15 |
| 3.8 | UP3 | Process voltage UP3 (24 VDC) |
| 3.9 | ZP | Process voltage ZP (0 VDC) |
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 figure shows the electrical connection of the ETHERNET bus module CI522-MODTCP.
Connection of the bus module CI522-MODTCP
Further information is provided in the System Technology chapter CI52x-MODTCP: MODBUS Communication Interface Module