Functional And Fault Indicators; External Control" Terminal; Level Switch" Terminal - ProMinent Beta b BT4b Series Operating Instructions Manual

Overview of Equipment and Control Elements

5.2.4 Functional and Fault Indicators

Fault indicator (red)
Warning indicator (yellow)
Operating indicator (green)

5.2.5 "External control" terminal

5.2.6 "Level switch" terminal

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The fault indicator lights up if the fluid level in the dosing tank falls below
the second switching point of the level switch (20 mm residual filling level
in the dosing tank).
The fault indicator lights up if the current falls below 3.8 mA (only with
4...20 mA) or exceeds 23 mA in "External Analogue" operating mode.
This LED flashes in the event of an undefined operating status.
The warning indicator lights up if the fluid level in the dosing tank falls
below the first switching point of the level switch.
The operating indicator lights up if the pump is ready for operation and
there are no fault or warning alerts. It goes out quickly as soon as the
pump has performed a stroke.
The "external control" terminal is a five-pole panel terminal.
It enables the following functions and operating modes to be used:
Pause
n
External contact
n
External Analogue (optional)
n
Auxiliary frequency (external frequency changer)
n
The two- and four-pole cables used to date can continue
to be used. The "Auxiliary frequency" function can, how‐
ever, only be used with a five-pole cable.
A 2-stage level switch with pre-warning and end switch-off can be con‐
nected.