Electrical Connection

The electrical connection is carried out by using removable 9-pin and 11-pin terminal blocks. These terminal blocks differ in their connection system (spring terminals or screw terminals, cable mounting from the front or from the side). For more information, please refer to the chapter Terminal Blocks for S500-eCo I/O Modules TA563-TA565 - Terminal Blocks. 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 outputs:

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Assignment of the terminals:
Terminals Signal Description
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 supply voltage UP +24 V DC
20 ZP Process supply voltage ZP 0 V

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 VDC power supply at the terminals L+/UP and M/ZP of the CPU/bus module increases by 10 mA per DO561.

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

Warning

:strong:Removal/Insertion under power

The devices are not designed for removal or insertion under power. Because of unforeseeable consequences, it is not allowed to plug or unplug devices with the power being ON.

Make sure that all voltage sources (supply and process voltage) are switched off before you

  • connect or disconnect any signal or terminal block
  • remove, mount or replace a module.

Disconnecting any powered devices while energized in a hazardous location could result in an electric arc, which could create a flammable ignition resulting in fire or explosion.

Make sure that power is removed and that the area has been thoroughly checked to ensure that flammable materials are not present prior to proceeding.

The devices must not be opened when in operation. The same applies to the network interfaces.

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.

The following figure shows the electrical connection of the digital output module DO561:

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Attention

: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.

Attention

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

The outputs are not protected against short circuits 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 module provides several diagnosis functions (see Diagnosis DO561 - Digital Output Module).

The meaning of the LEDs is described in the section State LEDs DO561 - Digital Output Module.