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STP-H600/H1000 Series Instruction Manual
4.1.3 Inside of the STP Control Unit
(25) Inverter
l This is a three-phase transistor-inverter which starts/stops the STP pump.
(26) Fuses 3 to 9, 11, and 12
l These fuses protect as follows:
F3 and 4: 250 V, 5 A (for control power protection)
F5 to 7 : 250 V, 10 A, arc-extinguishing fuses
(for I/O TB2 terminal block power optional drive protection)
F8 and 9: 250 V, 10 A, arc-extinguishing fuses
(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
l For control of the magnetic bearing, motor, safety functions, etc.
(28) Internal Battery
l For backup during a power failure.
(29) Internal Battery Connector
l For connection of internal battery (when using an internal battery, connect
it to this connector).
l 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).
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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
l For cooling the inside of the STP control unit.
(31) "BATTERY NG" Lamp
l Lights when the battery capacity reduces to the minimum level (see
Section 9.4, "BATTERY NG Lamp”).
(32) "Reset" Switch
l 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”).
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