4104V100-UK
5
HoW To DEmoUnT SySTEm 4000
Picture 1:
Detach the device from the DIN rail by lifting the bottom lock.
When front lED flashes red / 4501 display shows ao.ER
PR 4104 is designed as a device with a high safety level. Therefore, a continuous
measurement of the outgoing current is carried out on a 4...20 mA output signal.
If the analogue output current is 0 mA (can e.g. be caused by an open output
loop), an error mode switches on the red front LED and the 4501 display shows
AO.ER. This function is not a default option but must be actively selected in the
menu by programming the analogue output to S4-20. The error mode can only
be reset by switching off and then switching on the supply voltage to the device.
