How To Demount System 4000; When Front Led Flashes Red / 4501 Display Shows Ao.er - PR 4104 Manual

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.
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41 0 4 V 1 0 0 - UK