User Manual

6 4179V100-UK
How to demount system 4000
Picture 1:
The device is detached from the DIN rail by moving the bottom lock down.
When front LED flashes red or 4511/4501 display shows AO.ER
The 4179 is designed with a high safety level. Therefore, the device continuously measures the output current. If "S4-20" is
selected during configuration, and output current drops to 0 mA, the 4511/4501 display will indicate "AO.ER" and the front
LED will turn red. (A 0 mA output can be caused by an open output loop). The error mode can be reset by power cycling the
device or stepping through the menu.