gefran TPD32-EV-...-4B - Figure 6.11.5.1: Speed Feedback

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189
Speed
Index Storing
Motor
A
H
Tacho
+
-
Tach generator
CEMF
Armature
Fbk Bypass
Encoder 1 Sinusoidal
6
5
1
8
4
3
A+
A-
B+
B-
C+
C-
0V
5V
XE1 connector
9
7
Encoder 1 Digital
6
5
1
8
4
3
A+
A-
B+
B-
C+
C-
0V
24
XE2 connector
2
7
Enable ind store
Disabled
Encoder 2 pulses
1024
Refresh enc 2
Disabled
Encoder 1 pulses
1024
Refresh enc 1
Disabled
Speed fbk sel
Armature
Speed fbk sel
Encoder 1
Speed fbk sel
Encoder 2
Speed fbk sel
Tacho
Enc 1 speed
PD output PID
Encoder 1 state
Encoder 2 state
Speed offset
0
Tacho scale
1
Actual spd (d)
Max. out voltage
500 V
Output voltage
Enable fbk bypass
Disabled
Figure 6.11.5.1: Speed feedback
Motor max speed Maxmotorspeed.Itisusedtoconverttachandarmaturefeedbackvaluesinrpm.Incase
ofspeedfeedbackfromtachogeneratoritisusedtoconvertthetachvoltageinanrpm
value.IncaseofarmaturevoltagefeedbackMax out voltageparameterisconsidered
equivalenttoMotor max speed.
Speed fbk sel Selectwhichfeedbackhastobeused.
 Encoder1 ThesinusoidalencoderconnectedththeXE1connectorisused.
 Encoder2 ThedigitalencoderconnectedtotheXE2connectorisused
(standard).
 Tacho Theanalogtachogeneratorconnectedtotheterminals+and-isused.
 Armature Theinternalmeasurementofthearmaturevoltageisused.No
externalconnectionisrequired.
Enable fbk contr Enableofthecontrolforthespeedfeedback.
 Enabled Enabledcontrol
 Disabled Disabledcontrol
 Thisfunctioncontrolsthespeedfeedback,whereacomparisonbetweenthearmature
voltageandthespeedvaluereadbytheencoderorbythetachometerismade.Whenan
excursionhigherofthevaluesetviaSpeed fbk errorissignaled,thefailuremessage
“Speedfbkloss”appears.Thisfunctionisautomaticallydisabledwhenthearmature
feedbackhasbeenselected.(Speed fbk sel=Armature).
Enable fbk bypas Enableoftheautomaticchangeintoanarmaturefeedbackwhenthefailuremessage
“Speedfbkloss”iscausedbyalackoftheencoderortachometerfeedback.
 Enabled Enabledautomaticchange
 Disabled Disabledautomaticchange
 Afteranautomaticchangeintoanarmaturefeedback,thespeedregulatorworkswiththe
Speed P bypassandSpeed I bypassparametersoftheREGPARAMETERS/Percent
values/Speedregulatormenu.Thefailuremessage“Speedfbkloss”withanenable
mustbeconguredsothatitissetas“Activity=Warning”.   
Possibleworkingonlywithconstanteldcurrent.