Festo SEC-AC-305 User manual

Description
Fitting and
installation
Type SEC−AC−305
Type SEC−AC−508
Description
192 346
en 0511c
[698 478]
Smart Electromotor Controller

Contentsand general instructions
I
FestoP.BE−SEC−AC−HW−EN en 0511c
Original de. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Editionen 0511c. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Designation P.BE−SEC−AC−HW−EN. . . . . . . . . . . . . . . . . . . . . .
Order no.192 346. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
E(FestoAG&Co. KG, D73726 Esslingen, Federal Republic of
Germany 2005)
Internet: http://www.festo.com
E−Mail:[e-mail]
Thecopying, distribution and utilization of this document as
well as thecommunication of itscontentstootherswithout
expressed authorization is prohibited. Offenderswill beheld
liable for thepayment of damages. All rightsreserved, in
particular theright tocarry out patent, utility model or
ornamental design registration.

Contentsand general instructions
II FestoP.BE−SEC−AC−HW−EN en 0511c

Contentsand general instructions
III
FestoP.BE−SEC−AC−HW−EN en 0511c
Contents
Designated use VII. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Target group VIII. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Theaim of this manual VIII. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TrademarksIX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service IX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety instructionsIX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Important user instructionsX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1. Summary of components 1−1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1Summary 1−4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2Features 1−4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3Controller unit1−6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3.1Brief description1−6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3.2Analogue−digital converter1−6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3.3Digital−analogueconverter1−6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3.4 Internal monitoring1−6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4 Final output stage 1−7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.1Brief description1−7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.2Power supply1−7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.3Feedingback thebrakingenergy1−8. . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.4 Internal monitoring1−9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5Displays1−10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.1Brief description1−10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.2Ready−to−operatedisplay1−10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.3Operatingmodeand error display1−10. . . . . . . . . . . . . . . . . . . . . . . . . .
1.6Rotary transducer evaluation1−11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.6.1Serial interface 1−11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.7User interfaces 1−12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.7.1Digital inputs1−12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.7.2Analogueinputs1−12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contentsand general instructions
IV FestoP.BE−SEC−AC−HW−EN en 0511c
1.8Parametrizations1−13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.8.1Theparameter memory 1−13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.8.2Theparametrizingprogram1−13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.8.3CAN module (optional)1−13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.8.4 PROFIBUS module (optional)1−13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.9Monitoringfunctions1−14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.9.1Brief description1−14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.9.2Monitoringthefinal output stage 1−14. . . . . . . . . . . . . . . . . . . . . . . . . . .
1.9.3Monitoringthemotor1−15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.9.4 I2t monitoring1−15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.9.5Automatic braking1−15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2. Fitting 2−1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1Dimensions2−3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.1Dimensionsof theSEC−AC 2−3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2Electromechanics 2−5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.1Front view2−5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.2Top view2−6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.3Bottom view2−7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3. Installation 3−1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1Material 3−4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.1Cables 3−4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.2Plugfor power cable X63−6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.3Plugfor external brakingresistor
(recommended for high brakingpower) 3−6. . . . . . . . . . . . . . . . . . . . .
3.1.4 Plugfor power supply totheSEC−AC 3−6. . . . . . . . . . . . . . . . . . . . . . . .
3.1.5PE connection of theSEC−AC 3−6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.6Interface cable for serial interface (zeromodem) 3−6. . . . . . . . . . . . . .

Contentsand general instructions
V
FestoP.BE−SEC−AC−HW−EN en 0511c
3.2Plugconnectorsand their pin assignments3−7. . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.1Rotary−angle sensor cable for motorswith resolver, plugX2
(rotary−angle sensor evaluation) 3−7. . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.2Control signal plugwith analoguemonitor output X1
(digital and analogueinputsand outputs)3−9. . . . . . . . . . . . . . . . . . .
3.2.3X10 (additional incremental sensor input) 3−11. . . . . . . . . . . . . . . . . . . .
3.2.4 X11 (additional incremental sensor output) 3−12. . . . . . . . . . . . . . . . . .
3.2.5X5(serial interface/serial test interface)3−13. . . . . . . . . . . . . . . . . . . . .
3.2.6X6(motor supply, power supply, brakeand temperaturesensor) 3−14.
3.2.7Power supply cable for theSEC−AC 3−16. . . . . . . . . . . . . . . . . . . . . . . . .
3.3Power supply of theSEC−AC 3−17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.1X9(power supply of theSEC−AC)3−17. . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.2X12 (Breakingresistors)3−18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.3Summary of connections3−21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.4 SEC−AC completesystem3−22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.5ConnectingthePCtotheSEC−AC (X5)3−22. . . . . . . . . . . . . . . . . . . . . . .
3.3.6Connectingthemotor totheSEC−AC 3−23. . . . . . . . . . . . . . . . . . . . . . . .
3.3.7Connectingtheexternal brakingresistor totheSEC−AC 3−23. . . . . . . . .
3.3.8ConnectingtheSEC−AC tothepower supply3−24. . . . . . . . . . . . . . . . . .
3.3.9Fittingthecontrol signal plug3−24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Completesummary of theSEC−AC system3−24. . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4.1Wiringtheconnections3−24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5PE protectiveconductor and screeningconnections3−28. . . . . . . . . . . . . . . . . . .
3.5.1Connectinginstructions3−28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.2Electrical isolation3−29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6Measures for observingEMCguidelines 3−30. . . . . . . . . . . . . . . . . . . . . . . . . . . .
4. Diagnosis and error treatment 4−1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1Statusdisplay4−3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2Error messages of theSEC−AC 4−4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contentsand general instructions
VI FestoP.BE−SEC−AC−HW−EN en 0511c
A. Technical appendix A−1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.1Technical specificationsA−3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.1.1SEC−AC−305 A−3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.1.2SEC−AC−508 A−6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.2IndexC−9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contentsand general instructions
VII
FestoP.BE−SEC−AC−HW−EN en 0511c
Designated use
TheSEC−AC (Smart Electromotor Controller) has been desi
gned for use in control cabinetsfor supplyingAC servomo
torsand for controllingtheir torque(current), speed and posi
tion.
TheSEC−AC must beoperated in asafeworkingenvironment.
An EMERGENCY STOP circuit must beinstalled for thesys
tem.
OperatetheSEC−AC only under thepermitted ambient condi
tions.
TheSEC−AC may only beused in stationary industrial and
commercial use. Theelectromagnetic interference immunity
of thepower electronics is not designed for operation in mo
bile systems, in householdsor firmsconnected directly tothe
low voltage network.
Fit theSEC−AC with screeningintoan earthed control cabinet.
Otherwise, theelectromagnetic compatibility (EMC) of the
power electronics will not beguaranteed. Use theSEC−AC
only as follows:
as designated
in atechnically faultless state
without undertakingany modifications.
If used in conjunction with additional commercially−available
components, such as sensorsand actuators, thespecified
maximum limits(temperatures, electrical datas, torques, etc.)
must beobserved.
Please comply with national and local safety lawsand regula
tions.

Contentsand general instructions
VIII FestoP.BE−SEC−AC−HW−EN en 0511c
Target group
This manual is aimed at technicianstrained in control and
automation technology, fittersetc. who
areworkingfor thefirst timewith digital drivecontrollers
arealready familiar with digital drivecontrollers, but who
areinstallingadigital drivecontroller liketheSEC−AC for
thefirst time.
The aim of this manual
This manual will help you tocarry out thefirst commissioning
of theSEC−AC successfully.
In this manual you will find important information and acquire
thebasic knowledge neceesary for operatingtheSEC−AC cor
rectly.
Most work stepsin this manual aredivided intotwoparts:
D
escription part: hereyou will learn important instruc
tionsand theaim of each individual work step.
Instruction part: hereyou carry out thework step.
In theleft−hand margin you will find symbols which simplify
theorientation in this manual for you duringcommissioning.
As this manual is intended for thefirst commissioningof the
completeSEC−AC product family, theregulator for which the
work step is intended is alwaysspecified for each individual
work step.

Contentsand general instructions
IX
FestoP.BE−SEC−AC−HW−EN en 0511c
Trade marks
All product names in this document may beregistered trade
marks. All trademarksin this document areonly used for
identifyingtheindividual product.
Service
If you haveany technical problems, please contact your local
FestoService.
Safety instructions
Warning
InsidetheSEC−AC and on itsconnectionstherearehigh
voltages which can beextremely dangerous.
Switch off thepower supply of theSEC−AC, therefore, and
wait for at least 5minutes in order that theintermediate
circuit can discharge beforeyou connect ordisconnect any
plugs.
Warning
Duringinstallation, commissioningand maintenance you
must observethesafety and accident prevention regula
tionsvalid for thespecific application.
Thefollowingregulationsapply but arenot guaranteed to
becomplete:
 VDE 0100 Regulationsfor settingup high−voltage sys
temsup to1000 V
 VDE 0113 Electrical equipment in machines
 VDE 0160 Equipment in high−voltage systemswith
electronic operatingmethods

Contentsand general instructions
XFestoP.BE−SEC−AC−HW−EN en 0511c
Important user instructions
Danger categories
This manual containsinstructionson thedangerswhich may
occur if theproduct is not used correctly. These instructions
aremarked with aheading(Warning, Caution, etc.), printed
on ashaded background and accompanied by apictogram. A
distinction is madebetween thefollowingdanger categories:
Warning
This meansthat thereis adanger of serioushuman injury
and damage toproperty if these instructionsarenot ob
served.
Caution
This meansthat thereis adanger of human injury and
damage toproperty if these instructionsarenot observed.
Please note
This meansthat thereis adanger of damage toproperty if
these instructionsarenot observed.
In addition, thefollowingpictogram markspassages in the
text which describeactivities involvingelectrostatically sensi
tivecomponents:
Electrostatically sensitivecomponents: Incorrect handling
may result in damage tothecomponents.

Contentsand general instructions
XI
FestoP.BE−SEC−AC−HW−EN en 0511c
Markingspecial information
Thefollowingpictogramsmark passages in thetext contain
ingspecial information.
Pictograms
Information:
recommendations, tipsand references toother sources of
information.
Accessories:
information on necessary or usefulaccessories for theFesto
product.
Environment:
information on theenvironmentally−friendly use of Festo
products.
Text markings
·Thebullet denotes activities which can becarried out in
any sequence.
1.Figures denoteactivities which must becarried out in the
order specified.
 Hyphensdenotegeneral activities.

Contentsand general instructions
XII FestoP.BE−SEC−AC−HW−EN en 0511c
Type Title Description
Fittingand
installation
manual
Fittingand installation",
typeP.BE−SEC−AC−HW−...
Information on fittingand installingthemotor
controller SEC−AC.
Commis
sioning
manual
CommisioningSEC−AC"
typeP.BE−SEC−AC−SW−...
Information on commissioningand diagnosing
themotor controller SEC−AC.
Field bus
coupling
manual
CommissioningSEC−AC
with field buscoupling
CANopen"
typeP.BE−SEC−AC−CO−...
Supplementary information on commissioning
and diagnosingthemotor controller SEC−AC
with CANopen field buscoupling.
CommissioningSEC−AC
with field buscoupling
ProfibusDP"
typeP.BE−SEC−AC−PB−...
Supplementary information on commissioning
and diagnosingthemotor controller SEC−AC
with CANopen field buscoupling.
SoftwareWMEMOC",
typeWMEMOC−3.3
Parametrizingprogram for theSEC−AC.
Fig.0/1:Manuals on theSEC−AC

Summary of components
1−1
FestoP.BE−SEC−AC−HW−EN en 0511c
Chapter 1

1. Summary of components
1−2FestoP.BE−SEC−AC−HW−EN en 0511c
Contents
1. Summary of components 1−1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1Summary 1−4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2Features 1−4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3Controller unit1−6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3.1Brief description1−6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3.2Analogue−digital converter1−6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3.3Digital−analogueconverter1−6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3.4 Internal monitoring1−6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4 Final output stage 1−7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.1Brief description1−7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.2Power supply1−7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.3Feedingback thebrakingenergy1−8. . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.4 Internal monitoring1−9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5Displays1−10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.1Brief description1−10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.2Ready−to−operatedisplay1−10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.3Operatingmodeand error display1−10. . . . . . . . . . . . . . . . . . . . . . . . . .
1.6Rotary transducerevaluation1−11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.6.1Serial interface 1−11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.7User interfaces 1−12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.7.1Digital inputs1−12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.7.2Analogueinputs1−12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.8Parametrizations1−13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.8.1Theparameter memory 1−13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.8.2Theparametrizingprogram1−13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.8.3CA
N module (optional)1−13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.8.4 PROFIBUS module (optional)1−13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.9Monitoringfunctions1−14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.9.1Brief description1−14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.9.2Monitoringthefinal output stage 1−14. . . . . . . . . . . . . . . . . . . . . . . . . . .
1.9.3Monitoringthemotor1−15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1. Summary of components
1−3
FestoP.BE−SEC−AC−HW−EN en 0511c
1.9.4 I2t monitoring1−15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.9.5Automatic braking1−15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1. Summary of components
1−4 FestoP.BE−SEC−AC−HW−EN en 0511c
1.1 Summary
TheSEC−AC servoregulatorsarefully digital AC servoregula
torswhich can beadapted very flexibly toalarge number of
applicationsduetotheir extensiveparametrizingpossibi
lities.
TheSEC−AC−508 is closely related totheSEC−AC−305. Apart
from thedifferent mainsvoltage, thetwodevices arefully
compatible.
TheSEC−AC Smart Electromotor Controllersmust befitted in a
control cabinet. Thecircuitry can becarried out in uniform
manner.
1.2 Features
Full integration of all componentsfor thecontroller and
power units, evaluation of therotary transducer (motor
angle of rotation feedback) has been designed as a
plug−in module.
Slot for technological extensions.
 Integration of all filtersin thedevice necessary for com
plyingwith theEMCregulationsin operation (industrial
area), e.g. network filter, motor output filter, filter for sup
ply as well as for theinputsand outputs.
 Integrated brakingmodule with brakingchopper enables
brakingenergy tobedissipated via theinternal braking
resistors.
External resistorswith up toseveral kW continuousout
put can beconnected for considerable brakingenergy.

1. Summary of components
1−5
FestoP.BE−SEC−AC−HW−EN en 0511c
Mechanical concept:
Thecompletely enclosed EMC−optimized metal housing
has been designed for direct mountingand fasteningonto
theusual mountingplates in acontrol cabinet.
Completeelectrical isolation of thecontroller unit and the
final output stage, digital inputsand outputs, analogue
and control electronics in accordance with VDE 0160.
 4−quadrant operation with completecontinuoustransfer
between thequadrants.
Droopless control in conjunction with adigital nominal
valuespecification.
Sinus−shaped current injection, thereforecontinuous
torquecompared with block−commutated controllers.
Can beoperated as aspeed, torqueor position regulator.
Smooth or time−optimum positioningrelatively or abso
lutely toareference point.
Speed and rotary angle synchronization with electronic
gearsvia an incremental sensor input.
Short cycle times, thecontrol dynamics aresimilar to
those of an analogueregulator.
Simple couplingtoahigher−order controller, e.g. toaPLC.
Thedigital controller permitserror−tolerant operation, i.e.
faultsarerecognized in good timeand regulated when
possible.

1. Summary of components
1−6FestoP.BE−SEC−AC−HW−EN en 0511c
1.3 Controller unit
1.3.1Brief description
Thecentral component in thecontroller unit is ahighly inte
grated 32−bit RISCmicrocontroller of typeHITACHI SH 7032.
Communication with higher−order controllers, PLCs or master
computersis accomplished with theoptional CAN businter
face, via theserial interface and via thedigital inputs/out
puts.
Theten external digital inputsand thefivedigital outputsare
completely electrically isolated.
1.3.2Analogue−digital converter
Theanalogue−digital converter is integrated in theSEC−AC. It
digitizes analoguevariables, e.g. themotor currents, ana
loguenominal values or thetemperatures of themotor and
thefinal output stage.
1.3.3Digital−analogueconverter
Thedigital−analogueconverter serves for displayingdigital
control variables on an analoguemonitor. This function is of
help, e.g. with regulator optimizations. TheSEC−AC has two
analoguemonitor devices.
1.3.4 Internal monitoring
Awatchdog timer and extensivemonitoringfunctionsensure
very reliable operation of thecontroller unit.
Themicrocontroller and additional external hardwarelogic
register error signals from themotor, from therotary−angle
evaluator and from thefinal output stage.