Electrical Connection

The analog output module AO561 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 AO561 must not be used as a remote expansion module at DC505-FBP and CI590-CS31-HA bus modules.

Note

For a detailed description of the mounting, disassembly and electrical connection of the module, please refer to the System Assembly chapter AC500-eCo.

Note

If the output is configured as not used, the voltage and current output signals are undefined and must not be connected.

The electrical connection is carried out by using a removable 11-pin 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) 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 analog outputs:

The assignment of the terminals:

Terminal	Signal	Description
10	—	Reserved
11	—	Reserved
12	—	Reserved
13	O0U+	Voltage output of channel 0
14	O0I+	Current output of channel 0
15	O1U+	Voltage output of channel 1
16	O1I+	Current output of channel 1
17	O01-	Negative pole of channels O0 and O1
18	SG	Signal ground
19	L+	Process voltage L+ (24 VDC)
20	M	Process voltage M (0 VDC)

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 UP/L+ and ZP/M of the CPU/bus module increases by 5 mA per AO561.

The external power supply connection is carried out via the L+ (+24 VDC) and the M (0 VDC) terminals. The M terminal is electrically interconnected to the M/ZP terminal of the CPU/bus module.

Attention

:strong:Risk of imprecise and faulty measurements!

Analog signals may be distorted seriously by external electromagnetic influences.

Use shielded wires when wiring analog signal sources. The cable shield must be grounded at both ends of the cable. Provide a potential equalisation of a low resistance to avoid high potential differences between different parts of the plant.

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.

The module provides several diagnosis functions AO561 - Analog Output Module.

The following figures show the electrical connection of analog actuators to the analog output module AO561.

Connection of analog voltage actuators	Connection of analog current actuators

Note

The output signal is undefined if the supply voltage at the L+ terminal is below 10V. This can, for example, occurr if the supply voltage has a slow ramp-up / ramp-down behaviour and must be foreseen when planning the installation.

Note

If the output is configured in current mode, the voltage output signal is undefined and must not be connected.

If the output is configured in voltage mode, the current output signal is undefined and must not be connected.