ABB PVS800-57B, Hardware Manual, Page: 19 / 84

Introduction to the manual 19
Terms and abbreviations
Term/Abbreviation Explanation
AC500 ABB programmable logic controller (PLC) series
ACS-AP-I Control panel type
Aux. Auxiliary
BAMU Auxiliary measuring unit
BCU Control unit
BINT Power module interface board
CPU Central processing unit
DC input Connection point from solar array to inverter. One input consists of one positive and
one negative terminal.
DDCS Distributed drives communication system; a protocol used in optical fiber
communication inside and between ABB drives and inverters.
EMC Electromagnetic compatibility
FENA Optional Ethernet adapter module for EtherNet/IP, Modbus TCP and PROFINET IO
protocols
Frame (size) Relates to the construction type of the component in question. The term is often
used in reference to a group of components that share a similar mechanical
construction.
FSCA Optional Modbus RTU adapter module
HMI Human-machine interface
IGBT Insulated gate bipolar transistor; a voltage-controlled semiconductor type widely
used in inverters due to its easy controllability and high switching frequency.
Inverter A cabinet-built device containing all inverter modules together with their control
electronics, and I/O and auxiliary components. The inverter module converts the DC
voltage to AC voltage. Its operation is controlled by switching the IGBTs.
I/O Input/Output
LCL Line filter
MEMI EMC filter board
MGND Solar array and grounding monitoring board
MIRU Solar array insulation resistance measuring unit
MPPT Maximum power point tracking. Inverter software function that automatically
operates the photovoltaic generator at its maximum power point.
NETA Network adapter module
Photovoltaic cell,
generator, module,
string, array and
array junction box In this manual, solar power system components based on photovoltaic effect are
called solar cell, solar module, solar array, solar string and solar array junction box
as defined below.
PLC Programmable logic controller
PSL2 Protocol used in optical fiber communication inside ABB inverters
PV Photovoltaic