gefran TPD32-EV-...-4B - Figure 6.14.8.1: Diagram of Control

—————— TPD32-EV ——————
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RUN
START
Torque front monitoring time
T =1sec
Brake drop
out speed
detection
Induced
current
Brake
release
current
detection
Brake
switch
command
Brake
switch
feedback
Actuator delay
time
Actual
opening
of brake
pads
Ramp
validation
Speed
feedback
Brake drop out threshold
Switch
delayed
feedback
Inverter
locking
Engaging fault
Mechanical
brake
fault
Engaging fault
Figure 6.14.8.1: Diagram of control
Diagram of control
Functionaldiagramwithminimaluseofinputsandoutputs.Specicassignmentsofthisdiagram:
 DI1: FwdsignAscending,conventionally“Forward”
 DI2: RevsignDescending,conventionally“Reverse”
 DI3: Brakefbk,mechanicalbrakefeedback/relaystatus
 Relay2: BrakecommandKM10contactorcommand
Withreferencetothepreviousgraph,abrakealarmconditionoccursif:
- when the brake is released,followingtheEnableandStartcommands,thevalueofthecurrentsuppliedby
thedriveisunabletosustaintheload(indicatedbytheTorqueprovingparameterandsignalledbythebrake
commanddigitaloutput)inatimethatislessthantheTorquedelaytime;or,ifthecurrentisadequate,the
signalconrmingthatthebrakehasbeenreleased(Brakefbk)hasnotbeenreceived,againwithinthetime
setinTorquedelay.
- when the brake is closed,oncethespeedsetintheClosingspeedparameterhasbeenreached(signalled