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Stepper motor-driven diaphragm dosing pump NXP-M and NXP-P
10.2.1.2 Level monitoring
Symbol
Dosing tank full
Dosing tank at minimum (alert)
Dosing tank empty (main alarm)
Table 23: Explanation of the menu symbols – Level monitoring
10.2.1.3 Operating modes
Symbol
Internal (manual operation)
External (operation via pulse signals)
Table 24: Explanation of the menu symbols – Operating modes
10.2.1.4 Release input
Symbol
Contact open (dosing pump stops)
Contact closed (dosing pump starts)
Table 25: Explanation of the menu symbols – Release input
10.3 Password protection
Symbol
Password protection active
Password protection inactive
Table 26: Explanation of the menu symbols - password protection
Control
28
Password protection
Meaning
Meaning
Meaning
Meaning
Activating the password protection
If password protection is activated, the dosing pump is protected against
unauthorized access. Settings can only be changed after alteration of the
password.
Caustic burns or other burns through dosing media!
If the password protection is activated, operation of the dosing pump
is blocked. The only way to stop a dosing pump without entry of the
password is via the power supply. In unfavourable cases, if the
password protection has been inadvertently activated or the user has
forgotten the password, the dosing pump cannot be stopped in time.
This can result in injury.
ð
Install an emergency stop switch or integrate the dosing pump into
the plant safety concept.
You can set any password you like from 0001 to 9999.
1. Press - and + simultaneously.
4
The dosing pump displays the password protection menu.
4 3 2 1
OK
-
+
Fig. 25: Activating the password protection
2. Use the+ and - keys to set a value from 0 to 9 for the first digit of the
code and then press
.
3. Proceed as described under point 2 for the other digits.
4. Choose the last point
and press +.
5. Press OK.
4
The dosing pump displays the corresponding symbol:
0%
Fig. 26: Start screen with activated password protection
i
The factory setup before the first change of the pass word is:
4321.
ü
Password protection activated.
Operating instructions
WARNING
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