Electrical Connection¶
The Ethernet Bus Module CI502-PNIO is plugged on the I/O Terminal Unit TU507-ETH ETH- Terminal Units TU507-ETH and TU508-ETH for PROFINET:sup:®- or EtherCAT® Bus Modules or TU508-ETH ETH- Terminal Units TU507-ETH and TU508-ETH for PROFINET:sup:®- or EtherCAT® Bus 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 Wall Mounting Accessory 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
Mounting, disassembling and electrical connection for the Terminal Units and the I/O modules are described in detail in S500 System Data System Data AC500.
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 V DC
Terminal 3.8: Process supply voltage UP3 = +24 V DC
Terminals 1.9, 2.9 and 3.9: Process supply voltage ZP = 0 VThe assignment of the other terminals:
Note
With a separate UP3 power supply, the digital outputs can be switched off externally. With this, an emergency-off functionality can be realised.
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 DO0..DO7 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 DO0..DO7 and DC0..DC7.
The assignment of the other terminals:
| Terminal | Signal | Meaning |
|---|---|---|
| 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 V DC) |
| 1.9 | ZP | Process voltage ZP (0 V DC) |
| 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 V DC) |
| 2.9 | ZP | Process voltage ZP (0 V DC) |
| 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 V DC) |
| 3.9 | ZP | Process voltage ZP (0 V DC) |
Caution
:strong:Risk of damaging the PLC modules!
The PLC modules must not be removed when the plant is powered on.
Make sure that all voltage sources (supply and process voltage) are switched off before you are removing or replacing a module.
Caution
:strong:Risk of damaging the PLC modules!
The PLC modules can be damaged by overvoltages and short circuits.
Make sure that all voltage sources (supply and process voltage) are switched off before you are beginning with operations at the system.
The following figures show the electrical connection of the Ethernet Bus Module CI502-PNIO.
Connection of the Bus Module CI502-PNIO