ABB ACS 400 User Manual
Also see for ACS 400: User guideInstallation guideUser manualUser manual
                                                                                                                                                                | |
Contents
| 
ACS 400 User’s Manual 127The Control Word and the Status WordHolding registers: 40001 (Control Word), 40004 (Status Word)The Control Word (CW) is the principal means for controlling the drive from a fieldbus system. It iseffective when• The drive is in external (remote) control and the controlling commands are received throughserial communication channel (set by parameters 1001 EXT1 COMMANDS, 1002 EXT2 COM-MANDS and 1102 EXT1/EXT2 SEL), and• Serial communication channel that is used for the controlling is Standard Modbus (parameter5006 COMM COMMANDS is set to 1 (STD MODBUS).The Control Word (detailed in Table 27) is sent by the fieldbus master station to the drive. The driveswitches between its states according to the bit-coded instructions of the Control Word. See alsostate machine on page 132.The Status Word (SW) is a word containing status information, sent by the drive to the masterstation. The composition of the Status Word is explained in Table 29.Note! Operation of Control Word and Status Word conforms to ABB Drives Profile with theexception of Control Word bit #10 (REMOTE_CMD), which is not used by the ACS 400.Table 27 The Control Word. See also the state machine on page 132.Bit Value Description0 1 EnterREADY TO OPERATE0 Emergency OFF. Ramp to stop according to parameter 2203 DECELER TIME 1. EnterOFF 1ACTIVE ; proceed toREADY TO SWITCH ON unless other interlocks (OFF2, OFF3) are active.1 1 Continue operation (OFF2 inactive)0 Emergency OFF, coast to stop.EnterOFF 2 ACTIVE; proceed toSWITCH -ON INHIBITED.2 1 Continue operation (OFF3 inactive)0 Emergency stop. Drive ramps to stop according to parameter 2205 DECELER TIME 2. EnterOFF3 ACTIVE; proceed toSWITCH- ON INHIBITED .3 0 -1 EnterOPERATION ENABLED (Note that also the Run enable signal must be present on adigital input – see parameter 1601 RUN ENABLE.0 Inhibit operation. EnterOPERATION INHIBITED4 Unused.5 1 Normal operation.EnterRAMP FUNCTION GENERATOR : ACCELERATOR ENABLED0 Halt ramping (Ramp Function Generator output held)6 1 Normal operation. EnterOPERATING0 Force Ramp Function Generator input to zero.7 0 - 1 Fault reset (enterSWITCH -ON INHIBITED)0 (Continue normal operation)8 to 10 Unused11 1 Select external control location 2 (EXT2)0 Select external control location 1 (EXT1)12 to 15 Unused |
Related manuals for ABB ACS 400
This manual is suitable for:
manualsdatabase
Your AI-powered manual search engine