Janitza AHF
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6.3.1 Automatic powering on
When there is a grid disturbance or an unusual mains voltage or frequency, the AHF
powers off automatically, thereby terminating the control. Once the following conditions are
fulfilled, the AHF restarts automatically.
1.
The power grid has been reestablished
2.
The auto-restart function is activated
3.
The auto-restart delay time has expired (default setting: 10s)
If the auto-restart function has not been set in the AHF, the user must restart the AHF
manually via the monitor screen.
6.4 Emergency stop (optional)
In an emergency, press the “EPO” button (emergency stop) to power off all modules.
Switch off the circuit breaker between the AHF and the power grid as needed. Once the
disturbance has been corrected, the device/installation can be restarted.
• Open the main menu for the parameter settings (Figure 4-13).
• Acknowledge the error with the “Acknowledge” button.
• In the main menu, press the “ON” button (Figure 4-2).
WARNING
For maintenance or to open the switchboard cabinet, it is essential to make a measure-
ment to ensure there is no voltage!
