Operating principle

The operating mode for operation without energy storage unit (fallback) disconnects the energy storage unit from the DC link. This step is skipped if the energy storage unit was already disconnected. The DC link voltage is then loaded again to the value configured in MOVISUITE^®. The parameter Target charge level (50100.28) is used as the value for state of charge control (StateOfChargeControl) and the application limit (parameter 8800.7) is used as the power limit.

In the configuration of the operating mode in MOVISUITE^®, you can also use "Fallback mode – deactivation of energy storage error messages" (50100.50) to set whether energy storage error messages are to be suppressed during operation wtihout energy storage. Energy storage error messages will then be suppressed in this operating mode and are no longer displayed for the customer with error code and error bit in the main fault interface. Observe the following conditions for the various configuration states:

• 1 synchronization contactor in negative pole
• The load-break switch must be deactivated so that the energy storage unit is disconnected from the DC link in all poles.
• 2 synchronization contactors (negative and positive poles)
• Disconnection of all poles is automatic. No further manual switching operations are required.