Keba ServoOne User Manual

referencemarkswillthesystemdetermine,basedonPeriodLen>0,thatthe
encodersystemislinearandnotrotary.
l P 555[0] - ENC_CH1_Info=EncoderInformation
Thisparameterisavailabletotheusersothattheycanenteratextoftheir
choice(maximumof31characters).Thistextshouldbeusedtodescribethe
encoderonchannelCh1
l P 616[0] - ENC_CH1_CycleCount=Samplingcyclein:nx125µs
(microseconds)
TheCycleCountparametercanbeusedtoslowdownthetimingforthe
cyclicalSSIencoderevaluation.Bydefault,CycleCount=1,i.e.thedefault
settingcorrespondsto125µssamplingandcyclesfortheencoder
evaluation.Differentsettingsmustbeviewedasspecialcasesand
accordinglymustonlybeusedwhennecessary.(seeSection"SSI
(cyclical)X7"onpage70).
l P 610[0] - ENC_CH1_NominalIncrementA=distancecodedabsolute
encoder
P 611[0] - ENC_CH1_NominalIncrementB=distancecodedabsolute
encoder
TheNominalIncrementAandNominalIncrementBparametersmakeit
possibletorunSinCosincrementalencoders(withoutanabsolutevalue
interface)withanaloguedistance-codedreferencemarks.Forexample,if
youwereusingtheHeidenhainROD280Cwith18000SinCostracksper
revolutionand36distance-codedreferencemarks,youwouldneedtoset
NominalIncrementAto1000signalperiodsandNominalIncrementBto1001
signalperiods.ThisfunctionalityisenabledifNominalIncrementA>0.(see
Section"Increment-codedreferencemarks"onpage107).
l P 617[0] - ENC_CH1_AbsInitMode=Modeabsolutevalueformation
AbsInitModecanbeusedtoselectvariouspossiblesettingsfortheabsolute
valueinitialization:

o
DIG_ANA(0)-Standard:
Absolutevalueinitializationusingamixofthedigitalandanalogue
components(thisisthedefaultmode)
ID No.: 0842.26B.5-01Date: 09.2020
ServoOne- Device Help
68
6 Encoder

o
DIG(1)-Digital:
Onlythedigitalcomponentwillbeusedfortheabsolutevalue
initialization.

o
SEK_SEL37(2)-Automatic:
DigitalifSTbits>(LineBits+8);otherwisestandard(criterionapplies
withHIPERFACESEKL-37encoders)

o
SSI_180(3)-SameasStandard,except:
InthecaseofSSI,thequadrantalignmentofthedigitalvaluerelative
totheanalogueSinCostracksisnotthesameaswithEnDat,butis
insteadoffsetby180degreesrelativetoEnDat,i.e.inthe“naturalQ
alignment”forthedigitalvaluerelativetothetracks.
l P 1900[0] - ENC_ETS=ETSmode,electronicnameplate
TheparameterENC_ETSsupportswhatisreferredtoasthe“KEBA
electronicratingplate”forHIPERFACEencoders.Ifthisparameterissetto
SCAN(0),themotor’scommutationoffsetwillbereadfromtheencoder’s
OEMmemoryandcopiedtoP 349 - CON_FM_MConOffset,butonlyifthis
offsetcanbeunambiguouslyidentifiedintheencoder(encodermemory
scanning).IftheparameterissettoNEVER(0)instead,thisfunctionalitywill
bedisabled.
6.5.5.2.5SSIabsolutevalueinterface
If P540[0] - ENC_CH1_Abs = SSI(1), which is the normal setting, the absolute SSI
encoder position will be read once during the initialization phase; after this, the
cyclical encoder position will be acquired based on the SinCos incremental
component.
The parameters for the SSI interface are described in Section "SSI (cyclical)X7" on
page 70, as are the differences in using the SSI interface with the “cyclical” method
and “one-time reading” method.
If P540[0] - ENC_CH1_Abs = SSI_CONT(4), which is a special case, the absolute
SSI encoder position will be read once during the initialization phase; after this, the
cyclical encoder position will be acquired based on the SinCos incremental

Keba ServoOne Specifications

General

Brand	Keba
Model	ServoOne
Category	Controller
Language	English