Telemecanique Altivar 56 manual - Northern Industrial

Chapter 5 — ConfigurationBulletin No. 50006-519-01B7 →General Configuration Menu December 19967.4→Fault Management7.4‘FAULT MANAGEMENTFAULT STOP :FREEW.POWER LOSS : NOAUTO-RESTART : NOCATCH ON FLY : RAMP†, & ENT to modifyMOTOR OVERLOAD ...IN. PHASE FAIL: YESLOSS FOLLOWER :FAULTFOLD BACK : NOFAULT RESET : NODB FAULT : NOOUT. PHASE FLT: YESENTENTFREERAMPCATCH TYPERAMPI LIMITNOThe 7.4→Fault Management menu allows you to program the drive controller fordetecting certain fault states and to specify fault stop methods.NOTE: The user must evaluate the effects of a drive controller fault on the process beingcontrolled and select an appropriate fault management strategy. If a drive controller faultoccurs, applications such as those involving safety-critical aspects of a process (continuityof service under unusual service conditions, emergency braking, etc.) may requireadditional apparatus or control to achieve an appropriate response or level of redundancy.Fault StopDrive Controller RestartMethodsFault Stop determines how the drive controller will stop upon occurrence of afault. On the ALTIVAR 56 freewheel stop is the fixed method of fault stop. (SeeTable 37 on page 101.) In freewheel stop, the drive controller output is turned off,allowing the motor to coast to a stop according to inertia and resistant torque.There are three methods for resetting the drive controller after a fault:• Automatic restart (2-wire command only). See page 102.• Manual reset: removal of all power for longer than 1.0 second, thenreapplication of power.• If input phase failure detection is enabled, an input phase failure lasting longerthan 1.0 second may also initiate a manual reset.• Fault reset by logic input or function key (see page 108).In all cases, fault reset cannot occur unless the cause of the fault is no longerpresent. Certain faults, described in Table 37, do not allow an automatic restart.100 © 1996 Square D All Rights Reservedηττπ://νιχοντρολσ.χοm