Vega MINITRAC 31 Operating Instructions Manual page 53

Relay
Lock/Unlock adjustment
MINITRAC 31 • Foundation Fieldbus
You can enter the adjustment point (ct/s) manually.
You can let the adjustment point be determined by MINITRAC 31.
In this menu item you can select which mode the sensor should oper-
ate in.
You can choose between overfill and dry run protection.
The relay outputs of the sensor react accordingly.
Overfill protection = the relay will deenergise (safe state) when the
max. level is reached.
Dry run protection = the relay will deenergise (safe state) when the
min. level is reached.
In the menu item " Lock/unlock adjustment", you can protect the sen-
sor parameters against unauthorized or inadvertent modification. The
sensor is locked/unlocked permanently.
With locked instrument, only the following adjustment functions are
possible without entering a PIN:
•
Select menu items and show data
•
Read data from the sensor into the display and adjustment module
Before you lock the sensor in unlocked condition, you can modify the
four-digit PIN number.
Keep the entered PIN number in mind. Operation of the sensor is only
possible with this PIN number.
Caution:
When the PIN is active, adjustment via PACTware/DTM as well as
other systems is also blocked.
In delivery status, the PIN is 0000.
6 Set up with the display and adjustment module
53