IFM Electronic AS-interface AC2220 Notice De Montage page 12

Operation
Check the safe functioning of the unit. Display by LEDs:
• LED yellow I1 ... I4
• LED green AS-i
• LED rot FAULT
* periphery fault
A periphery fault is indicated if at least one of the signals I1, I2, I3 or
I4 is outside the measuring range or if nothing is connected to at least
one analogue channel.
Measuring range of the Pt100 module
For the measuring ranges, the LED states and their meaning please see
the following table:
Range
-200 ... +850°C
< -219.4°C
-219.4°C ...
-200.1°C
-200°C ...
+850°C
+850.1°C ...
+883.6°C
> +883.6°C
12
PAGE
off:
on:
flashing: analogue signal outside the
on:
on:
flashing: periphery fault *
Units
dec.
32767
-2194 ... -2001
-2000 ... 8500
8501 ... 8836
32767
not connected
analogue signal in the measu-
ring range
measuring range
AS-i voltage is applied
AS-i communication error
Units
hex.
7FFF
F76E ... F82F
F830 ... 2134
2135 ... 2090
7FFF
LED
analogue
flashes short circuit
on below nominal
on nominal range
on above nominal
off
Meaning
range
range
wire break