Functions - ProMinent Sigma/ 2 Control S2Cb Operating Instructions Manual

5.6 Functions

„Analog" operating mode The stroke rate is controlled using an analog
current signal via the "External control" terminal The processing of the cur‐
rent signal can be preselected via the control unit.
„Manual" operating mode The stroke rate is set manually via the control
unit.
„Contact" operating mode: This operating mode provides the option of
making fine adjustments using small scaling or transfer factors. Metering
can be triggered either by a pulse received via the "External control" ter‐
minal 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 100.00) can be pre-selected via the control unit using the
„Factor" setting.
„Batch" operating mode: This operating mode provides the option of
working with large transfer factors (up to 99,999). The metering can be
triggered 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 DP interface). This operating mode provides the option of control‐
®
ling the pump via BUS (see "Supplementary instructions for ProMinent
delta and Sigma with PROFIBUS
The following function can be ordered via the identity code:
Booster pump (optional): The pump can issue an electronic warning and
switch off if a tolerance range is exceeded. The overload switch-off is to
protect the pump, not the system. In the event of overloading, the pump
signals an error via the LED displays, the LCD screen (
„blockade" ) and - if fitted – the fault indicating relay.
The following functions can be selected using the
"Calibrate" function: 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 throughout the stroke rate range. The calibration is also
maintained when the stroke length is altered by up to ±10% scale divi‐
sions.
"Auxiliary frequency" function: Enables a freely selectable and program‐
mable stroke rate to be switched on in the
controlled via the "external control" terminal. This auxiliary frequency has
priority 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:
Functional Description
[P] key or by a pulse received via the
® ".
„p+" or
„Settings" menu:
„Settings" menu, which can be
„Settings" menu.
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