IFM Electronic AC2521 Montageanleitung Seite 10

Operation
Check the safe functioning of the unit. Display by LEDs:
• LED yellow AO1...AO4 on:
•LED yellow AO1...AO4 flashes:
• LED green PWR on:
• LED green AUX on:
• LED red FAULT on:
• LED red FAULT flashes:
* periphery fault
A periphery fault is indicated if at least one of the analogue signals is
outside the value range.
Measuring range of the analogue input modules
The measuring ranges, the states of the LEDs and their meaning are
indicated in the following tables:
Analogue output module 0 ... 20 mA
Range
0 ... 20mA
0mA ... 20mA
20.001mA ...
23mA
> 23mA
10
Units
dec.
0000 ... 20000
20001 ... 23000
> 23000
analogue signal in the measuring
rangeor no actuator connected.
It cannot be differentiated
whether the 0 V signal is applied
or whether an actuator is con-
nected
analogue signal outside the
measuring range (outside range)
AS-i voltage is applied
external 24 V voltage is applied
AS-i communication error
periphery fault*
Units LED AO1...AO4
hex.
0000 ... 4E20
4E21 ... 59D8
> 59D8
analogue
on nominal range
on above nominal
flashes outside range
Meaning
range