27
Subject to technical changes.
Neptune stepper motor-driven diaphragm pump NXP-M and NXP-P
Operating instructions
Control
10 Control
10.1 Operating elements of the control NXP-M
The desired delivery rate of the dosing pump is set using the stroke
frequency setting (3).
The stroke frequency can be adjusted while the pump is running or while
it is turned off (in depressurized condition).
The scale of the stroke frequency setting shows the value of the setting in
percent from 0% (stopped) to 100% (maximum possible stroke
frequency).
Fig. 23: Stroke frequency setting
Direction of rotation
Effect
Clockwise
Stroke frequency decreases,
delivery capacity decreases
Counter -clockwise
Stroke frequency increases,
delivery capacity increases
Table 20: Rotation direction and impact
Indicator lights
The Power LED (1) is lit permanently when the dosing pump is connected
to the power supply. The Power LED flashes when the dosing pump
performs a pressure stroke.
The Alarm LED (2) is lit when a fault has occurred (see chapter 13.1.1
“Alarm LED illuminates (NXP-M)“ on page 36).
10.2 Operating elements of the control NXP-P
Fig. 24: Operator controls of the control unit
No.
Explanation
1
Graphic display
2
Four multifunction keys
Table 21: Operator controls of the control unit
You operate the dosing pump NXP-P using the four keys below the
display. The system shows the respective functions of the keys at the
bottom of the display.
The
+
and
-
selection keys as well as the ≠ and Ø keys have a repeat
function, i.e. if you keep them pressed down, the system automatically
repeats the key function.
The display brightness reduces 45 seconds after your last input.
i
The dosing pump does not have an ON/OFF switch. After being
disconnected from the power supply, the dosing pump starts
in the operating mode and configuration that you selected last.
10.2.1 Explanation of the menu icons
10.2.1.1 Dosing status display
Symbol
Meaning
Diaphragms stationary (no dosing stroke)
Diaphragms in stroke phase (dosing stroke)
Table 22: Explanation of the menu symbols – Dosing status display
a
b
c
b
a