Specifications

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Doc. No
Model
Apparatus
Scale
Page No
1SDH000460R0002
L5439
14.3.6. Password management
Specify a password? [0***]
To enter “EDIT” mode it is necessary to enter a four-figure numerical password. The values attributable to the password go from
0000 to 9999. For the default password see par. 14.4.4.
Select the value of the first figure ( between ‘0’ and ‘9’ ) by means of the  and  keys and press  to confirm the figure and then
move on to enter the next one. After entering the fourth figure, check the password you have entered. If the password is correct,
you go from the “READ” state to the “EDIT” state.
If the password is wrong, the message
Wrong password
appears and remains until the ESC key is pressed (or until an interval of 5 seconds has elapsed).
It is also possible to interrupt the password entry procedure by pressing the ESC key.
Disabling the Password.
By setting the value of the password to [0000] (on the “Unit configuration” menu) the password prompt is disabled. It is therefore
always possible to switch from “READ” to “EDIT”.
To enter a new password, select the “New Password” item on the “Settings/System” menu.
14.3.7. Replacing an electronic release
14.3.7.1. Installation
To complete the procedure for installing a PR123/P unit, follow the steps below:
1. With the circuit-breaker open and preferably isolated, install the protection unit on the circuit-breaker
2. Power the unit ONLY from the PR030/B
3. If there are no other errors, the display will show the message
Configuration (configuration error) accompanied by the yel-
low LED coming on permanently (warning)
4. Enter the unit’s “Settings” menu
5. Select “Circuit-breaker”
6. Select “Unit installation”
7. Input the password
8. Select “Install” and press “ENTER”
9. When the red led flashes on and off and the message Installation (installation error) is displayed, remove the PR030/B
10. Power the relay from any other source.
Check for the absence of configuration errors.
14.3.7.2. Uninstalling
To complete the procedure for uninstalling a PR123/P unit, follow the steps below:
1. With the circuit-breaker open and/or isolated power the unit from the PR030/B
2. Enter the unit’s “Settings” menu
3. Select “Circuit-breaker”
4. Select “Unit installation”
5. Input the password
6. Select “Uninstall” and press “ENTER”
7. Remove the PR030/B
8. Remove the PR123/P unit from the circuit-breaker
9. The remove the TC connector, proceed as indicated in the figure alongside.
It is not strictly necessary to complete the uninstalling procedure, but this enables the parameters
relating to the circuit-breaker, such as contact wear and others, to be saved, otherwise these data
would be lost. The data in question are then transmitted to the new PR123/P unit installed on the
same circuit-breaker.