3adw000072r0601 dcs600 system description e f

Xxx 31 basic structure of dcs 600 multidrive 32

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Unformatted text preview: l field currents: IFilter = IField II F 2-26 3ADW000072R0601 DCS600 System description e f 3 Overview of software (Version 15.xxx) 3.1 Basic structure of DCS 600 MultiDrive 3.2 Control Modes The control hardware of DCS 600 MultiDrive consists of 2 parts: • converter control board SDCS-CON-2 • drive control board SDCS-AMC-DC 2 (AMC = Application Motor Control) The Control mode selects the source of control word and references. Accordingly, the software is split into 2 parts: • All control functions superimposed to the torque reference are done inside the AMC board. In addition, all HMI (Human Machine Interface) and communication functions are part of the AMC board's software. Also the Start/Stop functions ('Drive Logic') are realized by the AMC board's software. All parameters and signals of the drive are accessed via an on the AMC board residing data structure called 'AMC-table'. Local Mode Commissioning tool DriveWindow is connected to DDCS channel 3 of the AMC board and can use local mode. Local mode is also available on the panel CDP 312. Remote Mode Reference and control word are supplied by an overriding control system or a fieldbus adapter connected to the DDCS channel 0. Master/Follower Mode Reference and control word are supplied to the follower drive by the master drive via DDCS channel 2. • All converter related functions and the handling of standard I/O are done by the SDCS-CON-2 software: • Armature current control • Field weakening • Motor protection • I/O handling Software 15.6xx SDCS-AMC-DC 2 In general, the software functions are distributed between the SDCS-CON-2 board and the SDCS-AMCDC 2 board according to the following diagram: Human Machine Interface & Communication Drive Control Application Control Torque Control SDCS-CON-2 Software 15.2xx Fig. 3.1/1: I/O handling Distribution of software functions II F 3-1 3ADW000072R0601 DCS600 System description e f 3.3 Start, Stop and Fault Reactions During operation, the drive is in one of the following states (ABB Drive profile): ON_INHIBIT After emergency stop (OFF3_N) or emergency off (OFF2_N) this state is entered until ON = 0 OFF Main contactor is off, OFF3_N or OFF2_N active RDY_ON Main contactor is off RDY_RUN Main, field and fan contactor are closed, field control activated, ready for run command RDY_REF Drive is running, all controllers are released TRIPPED Drive is faulted OFF_2_STA_N Drive is coasting due to emergency off command; the states ZERO_A_AND_F → ONINHIBIT are entered. OFF_3_STA_N Drive stops according to the programmed emergency stop ramp and the programmed emergency stop mode; at zero speed, the state ON_INHIBIT is entered. Table 3.1/1: States of the drive Normal stop RUN = 0 sets the speed reference to zero and the drive decelerates. After the actual speed has reached zero the status bit RUNNING is reset, the armature converter sets the firing angle to maximum. The state RDY_RUN is entered, when the actual current has reached zero. ON = 0 sets RDY_RUN = 0 and the field current reference to zero. The fi...
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