Endress+Hauser PROMAG 33, Operating Manual

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Function group
PULSE / FREQ. OUTPUT
FAILSAFE MODE
In cases of an instrument error it is advisable for safety reasons that the
pulse/frequency output assumes a previously defined status which can be
set in this function.
Notes!
The setting chosen only affects the pulse/frequency output and the totaliser.
Other outputs or displays, e.g. current output, are not affected.
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FALLBACK VALUE In event of fault or EPD, the signal is set to the fall-
back value (0 Hz). The totalizer stops operating.
LAST VALUE Last valid measured value is held. The totalizer
operates with this value.
ACTUAL VALUE Normal measured value is given despite fault,
also with totalizer.
SIMULATION
FREQ.
With this function preset frequency signals can be simulated in order to check,
for example, any instruments connected. The simulated signals are always
symmetrical (pulse/pause ratio = 1:1). After activating the simulation mode, the
display shows the message “S: FREQ. OUTPUT SIMUL. ACTIVE”.
Notes!
•
No simulation is possible if “Positive zero return” is activated.
•
The flowmeter is fully capable of measuring during simulation, i.e. totalizer,
flow display etc. continue to operate normally.
•
Positive zero return interrupts a simulation in progress and sets the output
signal to the fall-back value.
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OFF
– 0 Hz (fallback value) – 2 Hz – 10 Hz – 1 kHz – 10 kHz
NOMINAL
FREQ.
With this function the calculated target value of the output frequency is shown
(0.00...16383 Hz).
Note!
In the “PULSE” operation mode, this display does not operate at very low
frequencies.
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Display of the actual flow rate.
Note!
Note!
Note!
Promag 33 6 Description of Functions
Hauser 57