Endress+Hauser Proline Prowirl 72, Руководство по эксплуатации

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11 Description of device functions Proline Prowirl 72
86 E Hauser
11.2.8 Group PULSE/STATUS OUTPUT
Function description PULSE/STATUS OUTPUT (pulse)
OPERATING MODE Use this function to specify whether the output functions as a pulse output or status
output. The functions available in this function group vary, depending on which option
you select here.
Options:
PULSE
STATUS
VORTEX FREQUENCY (unscaled pulses)
PFM
Factory setting:
PULSE
!
Note!
• After PFM is selected, the group current output is no longer available (Page 84 ff.).
If PFM is selected, current simulation with a simulation value of 4 mA is automatically
activated. If the transmitter was wired for pulse-frequency modulation (see Page 24),
the HART protocol is not available.
• If VORTEX FREQUENCY and PFM are selected, the vortex pulses are passed on
directly. The low flow cut off is taken into account.
PULSE VALUE
!
Note!
This function is not available unless the PULSE option was selected in the OPERATING
MODE function.
Use this function to define the flow at which a pulse should be output. These pulses can
be totaled by an external totalizer and in this way the total flow since measuring
commenced can be registered.
!
Note!
Select the pulse value in such a way that the pulse frequency does not exceed a value of
100 Hz with maximum flow.
User input:
5-digit floating-point number
Factory setting:
See parameter printout supplied (the parameter printout is an integral part of these
Operating Instructions)
!
Note!
The appropriate unit is taken from the UNIT FLOW function (see Page 74).
PULSE WIDTH
!
Note!
This function is not available unless the PULSE option was selected in the OPERATING
MODE function.
Use this function to enter the maximum pulse width of the output pulses.
User input:
5...2000 ms
Factory setting:
20 ms
Pulse output is always with the pulse width (B) entered in this function. The intervals
(P) between the individual pulses are automatically adjusted. However, they must at least
correspond to the pulse width (B = P).
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