4.1.3Inside of the STP Control Unit
(25)Inverter
This is a
(26)Fuses 3 to 9, 11, and 12
These fuses protect as follows:
F3 and 4: 250 V, 5 A (for control power protection)
F5 to 7 : 250 V, 10 A,
(for I/O TB2 terminal block power optional drive protection) F8 and 9: 250 V, 10 A,
(for internal and external batteries protection)
F11 and 12: 250 V, 0.1 A (for START/STOP TB6 terminal block protection)
(27)Control Circuit Boards
For control of the magnetic bearing, motor, safety functions, etc.
(28)Internal Battery
For backup during a power failure.
(29)Internal Battery Connector
For connection of internal battery (when using an internal battery, connect it to this connector).
The internal battery has been installed upon shipment of the STP control unit so that the customer can use it (the internal battery connector is connected to the internal battery).
CAUTION 
◇When using an external battery, disconnect internal battery connector, then connect external battery connector (see Section 10, "External Battery" for details).
(30)Air Cooling Fan
For cooling the inside of the STP control unit.
(31)"BATTERY NG" Lamp
Lights when the battery capacity reduces to the minimum level (see Section 9.4, "BATTERY NG Lamp”).
(32)"Reset" Switch
Resets the state of inability to start the STP control unit due to a decrease in the battery capacity (see Section 9.4, "BATTERY NG Lamp”).
