Electrical Connection

The Digital Input/Output Module DX561 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 DX561 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 the S500 System Data S500 System Data, Overview.

The electrical connection is carried out by using a removable 9-pole and 11-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 the 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 and outputs:

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
10	—	Reserved
11	O0	Output signal O0
12	O1	Output signal O1
13	O2	Output signal O2
14	O3	Output signal O3
15	O4	Output signal O4
16	O5	Output signal O5
17	O6	Output signal O6
18	O7	Output signal O7
19	UP	Process voltage UP +24 V DC
20	ZP	Process voltage ZP 0 V DC

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 DX561.

The external power supply connection is carried out via the UP (+24 V DC) and ZP (0 V DC) terminals.

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.

The module provides several diagnosis functions (see chapter Diagnosis Digital Input/Output Module DX561).

The digital inputs can be used as source inputs or as sink inputs.

Attention

: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 inputs to the Digital Input/Output Module DX561:

Electrical connection of inputs to the DX561 - sink inputs

Electrical connection of inputs to the DX561 - source inputs

The following figure shows the electrical connection of the outputs to the Digital Input/Output Module DX561:

Caution

:strong:Risk of malfunctions in the plant!

The outputs may switch on for a period of 10 to 50 µs if the process supply voltage UP/ZP is switched on.

This must be considered in the planning of the application.

Caution

:strong:Risk of damaging the I/O Module!

The outputs are not protected against short circuit and overload.

• Never short circuit or overload the outputs.
• Never connect the outputs to other voltages.
• Use an external 3 A fast protection fuse for the outputs.

The meaning of the LEDs is described in the Displays Digital Input/Output Module DX561 chapter.