Functions - ProMinent SCKa Series Operating Instructions Manual

Functional description

5.3 Functions

14
'Contact' operating mode: This operating mode provides the option of
making fine adjustments using small scaling or transfer factors. The
metering can be triggered either by a pulse received via the "External con‐
trol" terminal or through a contact or a semiconductor switching element. A
metering quantity (batch) or a number of strokes (scaling or transfer factor
0.01 to 99.99) can be pre-selected via the control unit using the "Pulse
Control" option.
'Batch' operating mode: This operating mode provides the option of
working with large transfer factors (up to 65535). The metering can be trig‐
gered either by pressing the
"External control" terminal or through a contact or a semiconductor
switching element. It is possible to pre-select a metering quantity (batch)
or a number of strokes via the control unit.
'BUS' operating mode (Identity code, control variant: CANopen or PRO‐
FIBUS This operating mode provides the option of controlling the pump
®
via a BUS (see "Supplementary instructions for ProMinent® gamma/ L and
ProMinent Sigma versions with PROFIBUS
The following functions can be selected using the SET menu:
"Calibrate" function: (Identity code, stroke length adjustment: Manual +
calibration): The pump can also be operated in the calibrated state in all
operating modes. In this case, the corresponding continuous displays can
then indicate the metering volume or the capacity directly. Calibration is
maintained within a stroke rate range of 0 - 180 strokes/min. The calibra‐
tion is also maintained when the stroke length is altered by up to ±10 %
scale divisions.
"Auxiliary frequency" function: Enables a freely selectable and program‐
mable stroke rate to be switched on in the
trolled via the "External Control" terminal. This auxiliary frequency has pri‐
ority over the operating mode stroke rate settings.
"Flow" function: Stops the pump when the flow is insufficient, provided a
dosing monitor is connected. The number of defective strokes, after which
the pump is switched off, can be set in the
The following functions are available as standard:
"Level switch" function: Information about the liquid/powder level in the
chemical feed container is reported to the pump control. To do so, a two-
stage level switch must be fitted; it is connected to the "Level switch" ter‐
minal.
"Pause" function: The pump can be remotely stopped via the "External
Control" terminal. The "Pause" function only works via the "External Con‐
trol" terminal.
The following functions are triggered by a key press:
"Stop" function: The pump can be stopped without disconnecting it from
the mains/power supply by pressing the
[P] key or by a pulse received via the
".
®
'SET' menu, which can be con‐
'SET' menu.
[STOP/START] key.