Functional Description - ABB ACS800 Series Hardware Manual

Functional description

Devices on the ACU cabinet are listed below.
Device Description
K3.1
Cooling fan control of ACU cabinet.
K20 Grid MCB control. YC/YO changing, monitoring.
K21 Grid MCB status monitoring.
K24 Emergency switching-off of grid MCB, stator MCB and grid-side converter contactor.
K25 Common fault output.
K3 Grid-side converter contactor control.
K30 Stator contactor control.
K31 Stator contactor status monitoring.
K33 Switching-off monitoring of grid MCB, stator MCB and grid-side converter contactor. On-delay 2 s.
K3.3 Option for DC chopper, LCL module fan supply-off delay.
K36 Request for medium-voltage MCB switching-off in case grid MCB faults. Off-delay 1 s.
K4 Grid-side converter contactor safety function. Off-delay is 0.1 s.
K40 Safety relay ON/OFF status.
K41 Monitoring of grid-side converter contactor status.
K6 Stator cabinet and LCL overtemperature monitoring.
K7 Converter module and ACU heating control.
K8/K18 Low temperature control, start-up temperature monitoring.
K107 Grid-side MCB close status monitoring
K108 Grid-side MCB trip status monitoring
G21 Ground isolated 24V power supply
K9 Low temperature control, start-up temperature monitoring.
K11 Monitoring of power cabinet main fuses.
K12 Capacitor charging control auxiliary relay.
U10 230 V AC / 24 V DC power supply.
U11 24 V AC / ±15 V DC power supply.
F11 Circuit breaker for control circuit.
F12 Circuit breaker for heating and cooling fans.
E1 Hydrostat for humidity monitoring.
E2 Thermostat for low temperature control.
E3 Thermostat for overtemperature control.
F45.3 Protective fuse of NAMU/BAMU grid voltage measuring circuit.
A415 APBU optical fiber branching unit.
A21 Safety relay for safety functions.
A43 RDCU control unit with APBU branching unit (A415) under it.
A433 RDCO module.
A42 NDCU control unit.
A419 NTAC Pulse Encoder Interface module
A412 NETA Ethernet adapter module.
A11 NAMU/BAMU measuring unit
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Hardware description