Electrical Connection¶
Attention
:strong:Risk of damaging the PLC modules!
The PLC modules must not be removed while the plant is connected to a power supply.
Make sure that all voltage sources (supply and process voltage) are switched off before you
- connect or disconnect any signal or terminal block
- remove or replace a module.
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.
Note
When replacing a processor module, it is recommended to mark each wire connected to the onboard I/O terminal block before disconnecting it. This should make sure that the wires can be reconnected in the same order.
The electrical connection is carried out by using a non-removable 20-pin terminal block.
The following block diagram shows the internal structure of the onboard I/Os:
| PM55x-T(P) | PM55x-R(P) |
The assignment of the terminals for PM55x-T(P):
| Terminal | Signal | Description |
|---|---|---|
| 1 | C0 … 7 | Input common for digital input signals DI0 to DI7 |
| 2 | DI0 | Digital input signal DI0 |
| 3 | DI1 | Digital input signal DI1 |
| 4 | DI2 | Digital input signal DI2 |
| 5 | DI3 | Digital input signal DI3 |
| 6 | DI4 | Digital input signal DI4 |
| 7 | DI5 | Digital input signal DI5 |
| 8 | DI6 | Digital input signal DI6 |
| 9 | DI7 | Digital input signal DI7 |
| 10 | — | Reserved |
| 11 | — | Reserved |
| 12 | — | Reserved |
| 13 | DO0 | Digital output signal O0 |
| 14 | DO1 | Digital output signal O1 |
| 15 | DO2 | Digital output signal O2 |
| 16 | DO3 | Digital output signal O3 |
| 17 | DO4 | Digital output signal O4 |
| 18 | DO5 | Digital output signal O5 |
| 19 | UP | Process supply voltage UP +24 VDC |
| 20 | ZP | Process supply voltage ZP 0 V |
The assignment of the terminals for PM55x-R(P):
| Terminal | Signal | Description |
|---|---|---|
| 1 | C0 … 7 | Input common for digital input signals DI0 to DI7 |
| 2 | DI0 | Digital input signal DI0 |
| 3 | DI1 | Digital input signal DI1 |
| 4 | DI2 | Digital input signal DI2 |
| 5 | DI3 | Digital input signal DI3 |
| 6 | DI4 | Digital input signal DI4 |
| 7 | DI5 | Digital input signal DI5 |
| 8 | DI6 | Digital input signal DI6 |
| 9 | DI7 | Digital input signal DI7 |
| 10 | — | Reserved |
| 11 | — | Reserved |
| 12 | — | Reserved |
| 13 | NO0 | Normally-open relay contact of the output NO0 |
| 14 | NO1 | Normally-open relay contact of the output NO1 |
| 15 | NO2 | Normally-open relay contact of the output NO2 |
| 16 | R0..2 | Output common for signals NO0 to NO2 |
| 17 | NO3 | Normally-open relay contact of the output NO3 |
| 18 | NO4 | Normally-open relay contact of the output NO4 |
| 19 | NO5 | Normally-open relay contact of the output NO5 |
| 20 | R3..5 | Output common for signals NO3 to NO5 |