Configuring In "Pfm" Mode; Configuring In "Pulse" Mode - Burkert 8619 Operating Instructions Manual

Type 8619
Parameters menu
INVERT: Invert the output or not.
PERIOD: Choose the value of period T2 in seconds.
MIN ON TIME: Choose the minimum value of T1 in seconds.
9.26.6

Configuring in "PFM" mode

This mode is used to control a dosing pump, for example.
Not inverted
Output
T1
100 %
0 %
T2 T2 T2 T2
T1 = period, constant
T2 varies
Fig. 95: "PFM" mode
PV: Choose the process input associated with the selected output.
0 %: Choose the value of the process input corresponding to the min. frequency.
100 %: Choose the value of the process input corresponding to the max. frequency defined in "MAX
FREQ." below.
INVERT: Invert the output or not.
MAX. FREQ. : Choose the maximum value of the pulse frequency (1/T2) (180 pulses per minute maximum)
PULSE WIDTH : Choose the value of the pulse width (T1).
9.26.7

Configuring in "Pulse" mode

This function is available only if the "FLOW" option is activated on the device (see section 9.5). It is used to
generate a pulse on the output each time a predetermined volume of fluid passes.
INPUT: Choose the digital input DI1 or DI2 associated with the output selected.
PULSE: Choose the volume of fluid for which a pulse must be transmitted on the selected output. First enter
the digital value, then confirm by pressing the "OK" dynamic key in order to modify the volume units by
pressing
successively on .
• A "Warning" event is emitted and the message "M0:W:Pulse x lim." is displayed when the volume
entered multiplied by the K factor of the device > 1,000,000.
• A "Warning" event is emitted and the message "M0:W:Pulse x 1:1" is displayed when the volume
entered multiplied by the K factor of the device < 1. In this case, the pulse frequency is forced to
the value of the input frequency.
Output
100 %
0 %
t
T2
Inverted
T1
T2 T2 T2 T2 T2
English
t
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