Phoenix Contact IB IL AO 4/U/0-10-ECO Handleiding (190 Pagina's)

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9.1.4 Indicators on I/O terminals

In this section, I/O terminals are all terminals that acquire or output signals, i.e., all

terminals excluding bus couplers, power, segment, and power-level terminals.

The LEDs of the I/O terminals are electrically located in the logic area.

This may mean that the LED of an output is on but the output cannot be controlled

due to an error between the logic area and the digital output. The LED does not mon-

itor the output state. In the event of an error, the actual output state may differ from

the state indicated by the LED.

Figure 9-2 Indicators on I/O terminals

Diagnostics The following states can be read on I/O terminals:

Status The status of the input or output can be read from the relevant yellow LED:

Additional diagnostic or status indicators can be found on the terminals. They are

described in the corresponding documentation.

1

2

D

1

2

D

1

3

2

4

1

2

1

2

1

2

1

2

D

(1)

Green LED Diagnostics (for meaning see page 94)

1, 2,

3, 4

(2)

Yellow LED Status of the input/output

ON: Corresponding input/output set

OFF: Corresponding input/output not set

For terminals with extended diagnostics

E1, E2,

E3, E4

Yellow LED The meaning depends on the terminal. It is described in the

terminal-specific data sheet, e.g.,:

Short circuit/overload of the initiator supply

Short circuit of an output

Diagnostic input error message

ON: An error has occurred

OFF: No error

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