Electrical Connection¶
Attention
: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
- connecting or disconnecting any signal or terminal block
- removing or replacing a module.
Attention
: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.
- 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. This should ensure to reconnect the wires in the same order.
The electrical connection is carried out by using a non-removable 20-pole Terminal Block.
The following block diagram shows the internal construction of the Onboard I/Os:
| PM56x-T(P) | PM56x-R(P) |
Assignment of the terminals for PM56x-T(P)
| Terminal | Signal | Meaning |
|---|---|---|
| 1 | C0..5 | Input common for digital input signals DI0 to DI5 |
| 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 | AI0 | Analog voltage input signal AI0 |
| 9 | AI1 | Analog voltage input signal AI1 |
| 10 | AOU | Analog voltage output |
| 11 | AOI | Analog current output |
| 12 | M | Input/output common for analog signals |
| 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 V DC |
| 20 | ZP | Process supply voltage ZP 0 V |
Assignment of the terminals for PM56x-R(P)
| Terminal | Signal | Meaning |
| 1 | C0..5 | Input common for digital input signals DI0 to DI5 |
| 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 | AI0 | Analog voltage input signal AI0 |
| 9 | AI1 | Analog voltage input signal AI1 |
| 10 | AOU | Analog voltage output |
| 11 | AOI | Analog current output |
| 12 | M | Input/output common for analog signals |
| 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 |