Introduction to the manual 25Terms and abbreviationsTerm/abbreviation ExplanationACS-CP-A Assistant control panel, advanced operator keypad for communicationwith the driveACS-CP-C Basic control panel, basic operator keypad for communication with thedriveACS-CP-D Assistant control panel for Asian languages, advanced operator keypadfor communication with the driveBrake chopper Conducts the surplus energy from the intermediate circuit of the drive tothe brake resistor when necessary. The chopper operates when the DClink voltage exceeds a certain maximum limit. The voltage rise istypically caused by deceleration (braking) of a high inertia motor.Brake resistor Dissipates the drive surplus braking energy conducted by the brakechopper to heat. Essential part of the brake circuit. See Brake chopper.Capacitor bank See DC link capacitors.Control board Circuit board in which the control program runs.CRC Cyclic redundancy checkDC link DC circuit between rectifier and inverterDC link capacitors Energy storage which stabilizes the intermediate circuit DC voltage.DCU Drive control unitDrive Frequency converter for controlling AC motorsEMC Electromagnetic compatibilityEFB Embedded fieldbusESP Enhanced Sequence ProgramFBA Fieldbus adapterFCAN Optional CANopen adapter moduleFDNA Optional DeviceNet adapter moduleFECA Optional EtherCAT adapter moduleFENA Optional Ethernet adapter module for EtherNet/IP, Modbus TCP andPROFINET IO protocolsFLON Optional L ON WORKS ® adapter moduleFMBA Optional Modbus RTU adapter moduleFPBA Optional PROFIBUS DP adapter moduleFrame (size) Refers to drive physical size, for example R1 and R2. To determine theframe size of a drive, refer to the rating table in chapter Technical dataon page 373.FRSA RSA-485 adapter boardI/O Input/OutputID run Identification runIGBT Insulated gate bipolar transistorIntermediate circuit See DC link.
