Pr
o
Minent
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Page 4
Function Description
Operating modes
Operating modes are selected using the MODE menu (depending upon identity code, some
operating modes may be absent).
“Analogue” operating mode:
(Identity code, control variant: analogue current)
The stroke rate is controlled via an analogue electrical signal via the “external control” terminal.
Signal processing is pre-selected at the controller.
“Manual” operating mode:
(Identity code, control variant: manual, standard function)
The stroke rate is controlled manually via the controller.
“Contact” operating mode:
(Identity code, control variant: external 1:1 / external with pulse
control)
This operating mode offers the opportunity to make fine adjustments with small increase/
decrease factors. Dosing can be activated by a pulse via the “external control” terminal or by a
semiconductor element. With the “pulse control” option it is possible to pre-set a feed quantity
(batch) or number of strokes (factor 0.01 to 99.99) via the control unit.
“Batch” operating function:
(identity code, control variant, external 1:1 / external with pulse
control)
This operating mode offers the option of working with larger transfer factors (up to 65535).
Metering can be triggered by pressing the P key or a pulse from the “external control” terminal
via a contact or semiconductor element. A batching quantity or number of strokes can be pre-
selected via the control unit.
Functions
The following functions can be selected using the SET menu:
“Calibrate” function:
The gamma/ L can be operated in all operating modes including in calibrating mode. The
corresponding continuous displays can show the actual feed quantity or the feed rate.
Calibration is maintained within the stroke frequency range 0 - 180 strokes/ min. Calibration is
also maintained when a stroke frequency is altered up to ± 10 %.
“Pressure level” function:
It is possible to set different pressure levels.
“Auxiliary frequency” function:
It is possible to set a stroke rate in the SET menu, which may be activated via the “external
control” terminal. This auxiliary frequency overrides all other pre-set stroke rate frequencies.
“Flow” function:
Stops the gamma/ L when the flow is insufficient. In the SET menu, the number of failed strokes
is entered after which the pump will be turned off.
The following functions are available as standard:
“Float switch” function:
Information on the liquid level in the feed chemical container is transmitted to the gamma/ L.
This option requires the installation of a 2-stage float switch. This is connected to the “float
switch” terminal.
“Pause” function:
The gamma/ L can be stopped by remote control via the “external control” terminal. The “pau-
se” function operates only via the “external control” terminal.
The following functions are activated by keystrokes:
“Stop” function:
The gamma/ L can be stopped by pressing the STOP/START key without disconnecting from
the mains power supply.
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