Electrical Connection¶
The Digital Input Module DI561 can be connected to the following devices via the I/O-Bus connector:
- S500 Bus Modules (e. g. CI592-CS31, CI501-PNIO, CI541-DP, CI581-CN)
- AC500 CPUs (PM5xx)
- other AC500 I/O Modules
Note
The DI561 must not be used as a remote expansion module at DC505-FBP and CI590-CS31-HA Bus Modules.
Note
Mounting, disassembling and electrical connection for the I/O Modules are described in detail in S500 System Data S500 System Data, Overview.
The electrical connection is carried out by using a removable 9-pole Terminal Block. These terminal blocks differ in their connection system (spring terminals or screw-type terminals, cable mounting from the front or from the side). For more information, refer to Terminal Blocks for S500-eCo I/O Modules TA563-TA565 Terminal Blocks for AC500-eCo I/O Modules and AC500-eCo \ CPUs. The terminal blocks are not included in the module’s scope of delivery and must be ordered separately.
The following block diagram shows the internal construction of the digital inputs:
The assignment of the terminals:
| Terminal | Signal | Meaning |
|---|---|---|
| 1 | C0 … 7 | Input common for signals I0 to I7 |
| 2 | I0 | Input signal I0 |
| 3 | I1 | Input signal I1 |
| 4 | I2 | Input signal I2 |
| 5 | I3 | Input signal I3 |
| 6 | I4 | Input signal I4 |
| 7 | I5 | Input signal I5 |
| 8 | I6 | Input signal I6 |
| 9 | I7 | Input signal I7 |
The internal power supply voltage for the module’s circuitry is carried out via the I/O-Bus (provided by a Bus Module or a CPU). Thus, the current consumption from 24 V DC power supply at the terminals L+/UP and M/ZP of the CPU/Bus Module increases by 10 mA per DI561.
An external power supply connection is not needed.
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.
The module provides several diagnosis functions Digital Input Module DI561.
The digital inputs can be used as source inputs or as sink inputs.
Warning
:strong:Risk of malfunctions in the plant!
A ground closure, e. g. caused through a damaged cable isolation, can bridge switches accidentally.
Use sink inputs when possible or make sure that in error case no risks will happen to persons or the plant.
The following figure shows the electrical connection of the Digital Input Module DI561:
| Electrical connection of DI561 - sink inputs | Electrical connection of DI561 - source inputs |
The meaning of the LEDs is described in Displays Digital Input Module DI561 chapter.