23
NRS 2-50, NRS 2-51 - Installation & Operating Manual -
819179-05
Operation, alarm and testing
Enabling password protection
Action
Display
Function
Turn the rotary knob until the entry
PW is shown.
The display toggles between the
parameter name and the parameter
value.
Parameter selected.
Press and hold the pushbutton (on
rotary knob).
PASS
Password entry is required.
Release and then press and hold the
pushbutton once more.
First digit (0000) flashes.
Enter the password starting with the
digit on the right.
Turn the rotary knob clockwise or
anti-clockwise to enter the required
digit.
000X
The first digit is entered.
Briefly press the pushbutton.
Second digit from the right flashes
(00
0
X).
The second digit can be entered.
Repeat the last two steps until the
password has been entered in full.
The entered password is displayed
(XXXX).
The password is entered in full.
Press and hold the pushbutton.
donE
The correct password was entered.
The parameter may be edited.
FAiL
The wrong password was entered. The
parameter is still password-protected.
quit
Processing time has elapsed. System
switches back to the parameter.
Password entry is cancelled.
Disabled password protection is re-enabled after 30 minutes with no activity (rotary knob). The password must be
entered again. When the equipment is restarted, the parameters are password-protected, if password protection
was previously enabled.
Password protection
Parameters can be password-protected from software version “S-13” onwards. The default password is
1902 and cannot be changed.
continued
