Endress+Hauser Proline Prowirl 73 - Page 131

Proline Prowirl 73 Description of device functions
Endress+Hauser 131
FAILSAFE MODE Prerequisite
The function is only available if PULSE was selected in the OPERATION MODE function
(ä 122).
Description
Use this function to specify the response of the pulse output in the event of an error. The
dictates of safety render it advisable to ensure that the pulse output assumes a predefined
state in the event of a fault. The setting you select here affects only the pulse output. It
has no effect on other outputs or the display (e.g. totalizers).
Options
FALLBACK VALUE
0 pulse output.
HOLD VALUE
Measured value output is based on the last measured value saved before the error
occurred.
ACTUAL VALUE
Measured value output is based on the current flow measurement. The fault is ignored.
Factory setting
FALLBACK VALUE
ACTUAL PULSE Prerequisite
The function is only available if PULSE was selected in the OPERATION MODE function
(ä 122).
Description
The computed actual value of the output frequency appears on the display.
Display
0 to 100 pulse/second
SIMULATION PULSE Prerequisite
The function is only available if PULSE was selected in the OPERATION MODE function
(ä 122).
Description
Use this function to simulate the pulse output. The notice message #631 "SIM. PULSE"
(ä 67) indicates that simulation is active. The on/off ratio is 1:1 for both types of
simulation. The measuring device continues to measure while simulation is in progress,
i.e. the measured values are output correctly via the other outputs.
!
Note!
The setting is not saved if the power supply fails.
Procedure
• Simulation is started by confirming the CONTINUOUSLY option with the
F
key.
•If the
F
key is pressed again afterwards, the prompt "End simulation" (NO/YES)
appears.
• If you choose "NO", simulation remains active and the group selection is called up.
The simulation can be switched off again via the SIMULATION PULSE function.
• If you choose "YES", you end the simulation and the group selection is called up.
Options
OFF
COUNTDOWN
The pulses specified in the VALUE SIMULATION PULSE function (ä 132) are
output.
CONTINUOUSLY
Pulses are continuously output with the pulse width specified in the PULSE WIDTH
function (ä 128). Simulation is started once the CONTINUOUSLY option is
confirmed with the F key.
Factory setting
OFF
Function description, PULSE, FREQUENCY, STATUS group