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• In the field Set installer password, enter the previous system password for the user

group Installer.

• In the field Confirm password, confirm the system password.

• In the field Set user password, enter the previous system password of the user group

User.

• In the field Confirm password, confirm the system password.

• Select [Save].

☑ The ClusterController changes the device password for all approved devices in the

system. All devices have now been reset to the previous system passwords.

4. Select [Save].

5. Restart the ClusterController via the user interface (see Section18.3, page108).

☑ After a maximum of two minutes, the new device is displayed without a padlock symbol in the

system tree.

15.4 Procedure on Loss of System Passwords

15.4.1 Requesting a PUK

If you have forgotten the system passwords for both user groups, then you can unlock the inverters

using a PUK (Personal Unlocking Key). For every inverter, there is one PUK for each user group (

User and Installer).

Procedure:

1. Download the PUK application form (application form available at www.SMA-Solar.com).

2. Complete the application form and sign it.

3. Send the application form to the Service by e-mail, fax or mail (see Section20, page111).

15.4.2 Unlocking Inverters with PUKs

Unlocking several inverters using a PUK

Each PUK is only valid for one inverter and one user group.

• If you have requested PUKs for several inverters, you must unlock each inverter

individually with the corresponding PUK.

Communication connection required between the ClusterController and the inverter

during the unlocking process

In order for the changed password settings to become effective, there must be a

communication connection between the ClusterController and the respective inverter during

the unlocking process.

• Only unlock the inverter with PUK if there is a communication connection to the inverter.

The inverter must not be displayed with a communication error ( ).

15 Passwords and SMA Grid Guard

SMA Solar Technology AG

User Manual 81ClusterController-BA-en-15

SMA CLUSTER CONTROLLER User Manual

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