Digital Servo Amplifier
AX2040/2070
Assembly, Installation, Setup
Keep all product manuals as a product component
during the life span of the servo amplifier.
Pass all product manuals to future
users / owners of the servo amplifier.
Edition 06/2007
Previous versions :
Edition Remarks
09/05 First edition
02/06
Chapter 1 updated, motor choke added, DeviceNet, SynqNet and EtherCat expansion cards added, chap
ter 6 restructured, feedback section updated, cross section (awg)
Part number scheme new, shock-hazard protection new, servo system graphics / different mains supply
06/07
networks expanded&removed, feedback expanded, enc. emulation, switch-on and switch-off behavior ex
panded, AS expanded, accessories removed, DC Bus link expanded, timing diagramm motor brake, dispo
sal acc. to WEEE-2002/96/EG, new structure, SynqNet removed, Quickstart integrated, warnings updated
-
-
-
WINDOWS is a registered trademark of Microsoft Corp.
HIPERFACE is a registered trademark of Max Stegmann GmbH
EnDat is a registered trademark of Dr. Johannes Heidenhain GmbH
Technical changes which improve the performance of the equipment may be made without prior notice !
Printed in the Federal Republic of Germany
All rights reserved. No part of this work may be reproduced in any form (by printing, photocopying, microfilm or
any other method) or stored, processed, copied or distributed by electronic means without the written permission of
BECKHOFF.
BECKHOFF
06/2007 Contents
1 General
1.1 About this manual ....................................................................... 7
1.2 Hints for the online edition (PDF format) ...................................................... 7
1.3 Symbols used........................................................................... 7
1.4 Abbreviations used....................................................................... 8
2 Safety
2.1 Safety Instructions ....................................................................... 9
2.2 Use as directed ........................................................................ 10
3 Standards
3.1 European directives and standards ......................................................... 11
3.2 American Directives and Standards......................................................... 11
3.3 Asian Directives and Standards ............................................................ 11
3.4 Approvals ............................................................................. 12
3.4.1 CE - conformance ................................................................. 12
3.4.2 UL and cUL- Conformance .......................................................... 12
4 Handling
4.1 Transport ............................................................................. 13
4.2 Packaging ............................................................................ 13
4.3 Storage .............................................................................. 13
4.4 Maintenance........................................................................... 13
4.5 Disposal .............................................................................. 13
5 Package
5.1 Package supplied....................................................................... 14
5.2 Nameplate ............................................................................ 14
5.3 Part number scheme .................................................................... 15
6 Technical description
6.1 The digital servo amplifiers of the series AX2040/2070 .......................................... 16
6.2 Technical data ......................................................................... 18
6.2.1 Recommended torques ............................................................. 19
6.2.2 Fusing .......................................................................... 19
6.2.3 Ambient conditions, ventilation, mounting position......................................... 19
6.2.4 Conductor cross-sections............................................................ 20
6.3 LED display ........................................................................... 20
6.4 Grounding system ...................................................................... 20
6.5 Control for motor holding brake ............................................................ 21
6.6 Regen circuit .......................................................................... 22
6.7 Switch-on and switch-off behavior .......................................................... 23
6.7.1 Behavior in standard operation ....................................................... 24
6.7.2 Behavior in the event of an error (with standard setting) .................................... 25
6.8 Stop/Emergency Stop Function to EN 60204.................................................. 26
6.8.1 Stop: Standards ................................................................... 26
6.8.2 Emergency Stop: Standards ......................................................... 27
6.8.3 Implementation of the Stop Category 0 ................................................. 28
6.8.4 Implementation of the Stop Category 1 ................................................. 29
6.8.5 Implementation of the Stop Category 2 ................................................. 30
6.9 Shock-hazard protection ................................................................. 31
6.9.1 Leakage current ................................................................... 31
6.9.2 Residual-current circuit breakers (FI)................................................... 31
6.9.3 Isolating transformers .............................................................. 32
Page
AX2040/2070 Product Manual 3
Contents
06/2007 BECKHOFF
7 Mechanical Installation
7.1 Important notes ........................................................................ 33
7.2 Guide to mechanical installation............................................................ 33
7.3 Assembly ............................................................................. 34
7.4 Dimensions ........................................................................... 35
8 Electrical Installation
8.1 Important Notes ........................................................................ 37
8.2 Guide to electrical installation.............................................................. 38
8.3 Wiring................................................................................ 39
8.3.1 Important notes ................................................................... 39
8.3.2 Shielding connection to the front panel ................................................. 40
8.3.3 Technical data for cables ............................................................ 41
8.4 Components of a servo system ............................................................ 42
8.5 Block diagram ......................................................................... 43
8.6 Pin assignments........................................................................ 44
8.7 Connection diagram (overview) ............................................................ 45
8.8 Power supply .......................................................................... 46
8.8.1 Connection to various mains supply networks ............................................ 46
8.8.2 Mains supply connection (X0) ........................................................ 47
8.8.3 24V auxiliary supply (X4) ............................................................ 47
8.8.4 DC bus link (X0)................................................................... 47
8.9 Motor connection with brake (X0, X4) ....................................................... 48
8.10 External regen resistor (X0) ............................................................... 48
8.11 Feedback ............................................................................. 49
8.11.1 Resolver (X2) ..................................................................... 50
8.11.2 Sine encoder with BISS (X1) ......................................................... 51
8.11.3 Sine Encoder with EnDat 2.1 or HIPERFACE (X1) ........................................ 52
8.11.4 Sine Encoder without data channel (X1) ................................................ 53
8.11.5 Incremental or sine encoder with hall sensors (X1) ........................................ 54
8.11.6 Incremental Encoder (X5) ........................................................... 55
8.12 Electronic Gearing, Master-slave operation ................................................... 56
8.12.1 Connection to a AX20 master, 5 V signal level (X5)........................................ 57
8.12.2 Connection to incremental encoder master with 24 V signal level (X3) .........................57
8.12.3 Connection to a sine-cosine encoder master (X1) ......................................... 58
8.12.4 Connection to a SSI encoder (X5) ..................................................... 59
8.12.5 Connection to stepper-motor controllers (step and direction)................................. 59
8.12.5.1 Step/Direction with 5 V signal level (X5) ............................................. 60
8.12.5.2 Step/Direction with 24 V signal level (X3) ............................................ 60
8.13 Encoder emulations ..................................................................... 61
8.13.1 Incremental encoder output - A quad B (X5) ............................................. 61
8.13.2 SSI output (X5) ................................................................... 62
8.14 Digital and analog inputs and outputs ....................................................... 63
8.14.1 Analog inputs (X3) ................................................................. 63
8.14.2 Analog outputs (X3) ................................................................ 64
8.14.3 Digital inputs (X3).................................................................. 65
8.14.4 Digital outputs (X3) ................................................................ 66
8.15 RS232 interface, PC connection (X6) ....................................................... 67
8.16 CANopen interface (X6) .................................................................. 68
8.17 Restart lock -AS- ....................................................................... 69
8.17.1 Safety instructions ................................................................. 69
8.17.2 Use as directed ................................................................... 70
8.17.3 Block diagram .................................................................... 70
8.17.4 Functional description .............................................................. 71
8.17.5 Signal diagram (sequence) .......................................................... 71
8.17.6 Functional test .................................................................... 72
8.17.7 Connection diagram (principle) ....................................................... 72
8.17.8 Application example category 1 according to EN 954-1..................................... 73
8.17.8.1 Control circuit ................................................................. 73
8.17.8.2 Mains supply circuit............................................................. 73
8.17.9 Application example category 3 according to EN 954-1..................................... 74
Page
4 AX2040/2070 Product Manual
BECKHOFF
06/2007 Contents
9Setup
9.1 Important notes ........................................................................ 75
9.2 Setup software ......................................................................... 76
9.2.1 General ......................................................................... 76
9.2.1.1 Use as directed ................................................................ 76
9.2.1.2 Software description ............................................................ 76
9.2.1.3 Hardware requirements.......................................................... 77
9.2.1.4 Operating systems ............................................................. 77
9.2.2 Installation under WINDOWS 95 / 98 / 2000 / ME / NT / XP ................................. 77
9.3 Quickstart Guide ....................................................................... 78
9.3.1 Preparation ...................................................................... 78
9.3.1.1 Unpacking, Mounting and Wiring the Servo Amplifier ...................................78
9.3.1.2 Documents ................................................................... 78
9.3.1.3 Minimum Wiring for Drive Test .................................................... 79
9.3.2 Connect ......................................................................... 80
9.3.3 Important Screen Elements .......................................................... 81
9.3.4 Basic Setup ...................................................................... 82
9.3.5 Motor (synchronous) ............................................................... 83
9.3.6 Feedback ........................................................................ 84
9.3.7 Save Parameters and Restart ........................................................ 85
9.3.8 Jogging the Motor (Speed Control) .................................................... 86
9.3.9 Status........................................................................... 87
9.3.10 Monitor.......................................................................... 87
9.3.11 Additional Setup Parameters ......................................................... 87
9.4 Multi-axis system ....................................................................... 88
9.4.1 Node address for CAN-bus .......................................................... 88
9.4.2 Baud rate for CAN-bus.............................................................. 88
9.4.3 Example of connections for a multi-axis system........................................... 89
9.5 Key operation / LED display............................................................... 90
9.5.1 Key operation..................................................................... 90
9.5.2 Status display..................................................................... 90
9.5.3 Standard menu structure ............................................................ 91
9.5.4 Extended menu structure............................................................ 91
9.6 Error messages ........................................................................ 92
9.7 Warning messages ..................................................................... 93
9.8 Removing faults / warnings ............................................................... 94
Page
AX2040/2070 Product Manual 5
Contents
06/2007 BECKHOFF
10 Expansion Cards
10.1 Guide to installation of expansion cards...................................................... 95
10.2 Expansion card -I/O-14/08- ............................................................... 96
10.2.1 Front view ....................................................................... 96
10.2.2 Technical data .................................................................... 96
10.2.3 Light emitting diodes (LEDs) ......................................................... 96
10.2.4 Select motion task number (sample) ................................................... 96
10.2.5 Connector assignments ............................................................. 97
10.2.6 Connection diagram................................................................ 98
10.3 Expansion cards -PROFIBUS-............................................................. 99
10.3.1 Front view ....................................................................... 99
10.3.2 Connection technology.............................................................. 99
10.3.3 Connection diagram................................................................ 99
10.4 Expansion card -SERCOS- .............................................................. 100
10.4.1 Front view ...................................................................... 100
10.4.2 Light emitting diodes (LEDs) ........................................................ 100
10.4.3 Connection technology............................................................. 100
10.4.4 Connection diagram............................................................... 101
10.4.5 Modifying the station address ....................................................... 101
10.4.6 Modifying the baud rate and optical power.............................................. 101
10.5 Expansion card -DEVICENET-............................................................ 102
10.5.1 Front view ...................................................................... 102
10.5.2 Connection technology............................................................. 102
10.5.3 Connection diagram............................................................... 102
10.5.4 Combined module/network status-LED ................................................ 103
10.5.5 Setting the station address (device address) ............................................ 103
10.5.6 Setting the transmission speed ...................................................... 103
10.5.7 Bus cable ....................................................................... 104
10.6 Expansion card -ETHERCAT- ............................................................ 105
10.6.1 Front view ...................................................................... 105
10.6.2 LEDs .......................................................................... 105
10.6.3 Connection diagram............................................................... 105
10.7 Expansion module -2CAN-............................................................... 106
10.7.1 Installation ...................................................................... 106
10.7.2 Front View ...................................................................... 106
10.7.3 Connection technology............................................................. 106
10.7.4 Connector assignments ............................................................ 107
10.7.5 Connection diagram............................................................... 107
11 Appendix
11.1 Glossary............................................................................. 109
11.2 Index ............................................................................... 111
Page
6 AX2040/2070 Product Manual
BECKHOFF
1 General
1.1 About this manual
This manual describes the digital servo amplifiers of the AX2040/2070 series (standard version).
A more detailed description of the expansion cards which are currently available and the digital
connection to automation systems can be found on the accompanying CD-ROM in Acrobat-Reader
format (system requirements: WINDOWS with Internet browser, Acrobat Reader) in several
language versions.
You can print this documentation on any standard printer. A printed copy of the documentation is
available from us at extra cost.
This manual makes the following demands on qualified personnel :
Transport : only by personnel with knowledge in handling electrostatically
sensitive components.
Unpacking: only by electrically qualified personnel.
Installation : only by electrically qualified personnel
Setup : only by personnel with extensive knowledge of electrical
engineering / drive technology
06/2007 General
1.2 Hints for the online edition (PDF format)
Bookmark:
Table of contents and index are active bookmarks.
Table of contents and index in the text:
The lines are active cross references. Click on the desired line and the appropriate page is indicated.
Page/chapter numbers in the text:
Page/chapter numbers with cross references are active. Click at the page/chapter number to reach
the indicated target.
1.3 Symbols used
ð p.
Danger to personnel
from electricity and its
effects effects
see page l special emphasis
Danger to maschinery,
general warning
Important no
tes
-
AX2040/2070 Product Manual 7
General
1.4 Abbreviations used
The abbreviations used in this manual are explained in the table below.
Abbreviation Meaning
AGND Analog ground
AS Restart Lock, option
BTB/RTO Ready to operate
CAN Fieldbus (CANopen)
CE Communité Européenne (EC)
CLK Clock signal
COM Serial interface for a PC-AT
DGND Digital ground
DIN German Institute for industrial Standards
Disk Magnetic storage (diskette, hard disk)
EEPROM Electrically erasable programmable memory
EMC Electromagnetic compatibility
EMI Electromagnetic interference
EN European standard
ESD Electrostatic discharge
F-SMA Fiber Optic Cable connector according to IEC 60874-2
IEC International Electrotechnical Commission
IGBT Insulated Gate Bipolar Transistor
INC Incremental Interface
ISO International Standardization Organization
LED Light-emitting diode
MB Megabyte
NI Zero pulse
NSTOP Limit-switch input for CCW rotation (left)
PELV Protected low voltage
PGND Ground for the interface
PSTOP Limit-switch input for CW rotation (right)
PWM Pulse-width modulation
RAM Volatile memory
R
regen(RB
R
Bext
R
Bint
RES Resolver
ROD 426 (EEO) A quad B encoder
PLC Programmable logic controller
SRAM Static RAM
SSI Synchronous serial interface
UL Underwriters Laboratory
VAC AC voltage
VDC DC voltage
VDE Verein deutscher Elektrotechniker
XGND Ground for the 24V supply
) Regen resistor
External regen resistor
Internal regen resistor
06/2007 BECKHOFF
8 AX2040/2070 Product Manual
BECKHOFF
2 Safety
2.1 Safety Instructions
Only properly qualified personnel are permitted to perform activities such as trans
l
port, installation, setup and maintenance. Properly qualified persons are those who
are familiar with the transport, assembly, installation, setup and operation of the pro
duct, and who have the appropriate qualifications for their job. The qualified person
nel must know and observe:
IEC 60364 or DIN VDE 0100
IEC 60664 or DIN VDE 0110
national accident prevention regulations or BGV A3
06/2007 Safety
-
-
-
Read this documentation before carrying out installation and setup. Incorrect hand
l
ling of the servo amplifier can lead to personal injury or material damage. It is vital
that you keep to the technical data and information on connection requirements (on
the nameplate and in the documentation).
The servo amplifiers contain electrostatically sensitive components which may be
l
damaged by incorrect handling. Ground yourself before touching the servo amplifier
by touching any unpainted metal surface. Avoid contact with highly insulating mater
ials (artificial fabrics, plastic film etc.). Place the servo amplifier on a conductive sur
face.
The manufacturer of the machine must produce a hazard analysis for the machine
l
and take appropriate measures to ensure that unforeseen movements do not result in
personal injury or material damage.
l Do not open or touch the equipment during operation. Keep all covers and cabinet
doors closed during operation. Touching the equipment is allowed during installation
and commissioning for properly qualified persons only. Otherwise, there are deadly
hazards, with the possibility of death, severe injury or material damage.
— During operation, servo amplifiers may have uncovered live
components, depending on their level of enclosure protection.
— Control and power connections may be live, even though the
motor is not rotating.
— Servo amplifiers may have hot surfaces during operation.
Surface can reach temperatures above 80°C.
-
-
-
l
Never undo any electrical connections to the servo amplifier while it is live. There is a
danger of electrical arcing with damage to contacts and personal injury.
Wait at least five minutes after disconnecting the servo amplifier from the main
supply power before touching potentially live sections of the equipment (e.g. con
tacts) or undoing any connections. Capacitors can still have dangerous voltages pre
sent up to five minutes after switching off the supply power. To be sure, measure the
voltage in the DC Bus link and wait until it has fallen below 40V.
Safety instructions
-
AX2040/2070 Product Manual 9
-
Safety
2.2 Use as directed
The servo amplifiers are components which are built into electrical equipment or machines,
l
and can only be used as integral components of such equipment.
The manufacturer of the machine must generate a hazard analysis for the machine, and
l
take appropriate measures to ensure that unforeseen movements cannot cause injury or
damage to any person or property.
The AX2040/2070 family of servo amplifiers can be connected directly to symmetrically eart
l
hed(grounded) three-phase industrial mains supply networks [TN-system, TT-system with
earthed(grounded) neutral point, not more than 5000rms symmetrical amperes, 480VAC
maximum] when protected by fuses type Fusetron FRS-R-50 for AX20 640 or FRS-R-80
class RK5 for AX20 670, manufactured by Bussman, or equivalent, 480VAC min.
The use of external mains chokes and mains filters is required.
The servo amplifiers must not be operated directly on power supply networks >230V without
l
an earth (ground) or with an asymmetrical earth (ground).
Connection to other mains supply networks ð p. 46.
Periodic overvoltages between outer conductor (L1, L2, L3) and housing of the servo ampli
l
fier may not exceed 1000V (peak value).
Transient overvoltages (< 50µs) between the outer conductors may not exceed 1000V.
Transient overvoltages (< 50µs) between outer conductors and housing may not exceed
2000V.
The regen resistors have to be protected by fuses type Limitron KLM, rated for 500VAC/DC
l
06/2007 BECKHOFF
-
-
The AX2040/2070 family of servo amplifiers is only intended to drive specific brushless syn-
l
chronous servomotors with closed-loop control of torque, speed and/or position. The rated
voltage of the motors must be at least as high as the DC bus link voltage of the servo amplifier. The motor must have integral thermal protection.
l
The servo amplifiers may only be operated in a closed switchgear cabinet, taking into
account the ambient conditions defined on page 19 and the dimensions shown on page 34.
Ventilation or cooling may be necessary to prevent enclosure ambient from exceeding 45°C
(113°F).
l
Use copper wire only. Wire size may be determined from EN 60204 (or table 310-16 of the
NEC 60°C or 75°C column for AWG size).
l
We only guarantee the conformance of the servo amplifiers with the standards for industrial
areas (page 11), if the components are delivered by BECKHOFF.
l
Consider the specifications on page 70 when you use the personnel safe restart lock -AS-.
10 AX2040/2070 Product Manual
BECKHOFF
06/2007 Standards
3 Standards
3.1 European directives and standards
Servo amplifiers are components that are intended to be incorporated into electrical plant and
machines for industrial use. When the servo amplifiers are built into machines or plant, the amplifier
must not be used until it has been established that the machine or equipment fulfills the require
ments of the EC Machinery Directive (98/37/EC), the EC EMC Directive (89/336/EEC) and the EC
Low Voltage Directive (73/23/EEC.)
Standards to be applied for conformance with the EC Machinery Directive (98/37/EEC):
EN 60204-1 (Safety and Electrical Equipment in Machines)
EN 12100 (Safety of Machines)
The manufacturer of the machine must generate a hazard analysis for the machine,
and take appropriate measures to ensure that unforeseen movements cannot
cause injury or damage to any person or property.
Standards to be applied for conformance with the EC Low Voltage Directive (73/23/EEC):
EN 60204-1 (Safety and Electrical Equipment in Machines)
EN 50178 (Electronic Equipment in Power Installations)
EN 60439-1 (Low Voltage Switchgear Combinations)
-
Standards to be applied for conformance with the EC EMC Directive (89/336/EEC):
EN 61000-6-1 / EN 61000-6-2 (Interference Immunity in Residential & Industrial Areas)
EN 61000-6-3 / EN 61000-6-4 (Interference Generation in Residential & Industrial Areas)
The manufacturer of the machine/plant is responsible for ensuring that it meets the limits required
by the EMC regulations. Advice on the correct installation for EMC (such as shielding, grounding,
treatment of connectors and cable layout) can be found in this documentation.
The machine/plant manufacturer must check whether other standards or EC
Directives must be applied to the machine/plant.
3.2 American Directives and Standards
Chapter in process
3.3 Asian Directives and Standards
Chapter in process
AX2040/2070 Product Manual 11
Standards
3.4 Approvals
3.4.1 CE - conformance
Conformance with the EC EMC Directive (89/336/EEC) and the Low Voltage Directive (73/23/EEC)
is mandatory for the supply of servo amplifiers within the European Community. Product standard
EN 61800-3 is applied to ensure conformance with the EMC Directive. The Declaration of Confor
mity form can be found on our website (download area).
Concerning noise immunity the servo amplifier meets the requirements to the 2nd environmental
category (industrial environment). For noise emission the amplifier meets the requirement to a pro
duct of the category C2 (motor cable £ 25m).
This product can cause high-frequency interferences in non industrial
environments which can require measures for interference suppression.
With a motor cable length from 25m onwards, the servo amplifier meets the requirement to the
category C3.
The servo amplifiers have been tested in a defined configuration, using the system components that
are described in this documentation. Any divergence from the configuration and installation descri
bed in this documentation means that you will be responsible for carrying out new measurements to
ensure conformance with regulatory requirements. The standard EN 50178 is applied to ensure
conformance with the Low Voltage Directive.
06/2007 BECKHOFF
-
-
-
3.4.2 UL and cUL- Conformance
This servo amplifier is listed under UL file number E195162.
UL (cUL)-certified servo amplifiers (Underwriters Laboratories Inc.) fulfill the relevant U.S. and
Canadian standard (in this case UL 840 and UL 508C).
This standard describes the fulfillment by design of minimum requirements for electrically operated
power conversion equipment, such as frequency converters and servo amplifiers, which is intended
to eliminate the risk of fire, electric shock, or injury to persons, being caused by such equipment.
The technical conformance with the U.S. and Canadian standard is determined by an independent
UL (cUL) inspector through the type testing and regular check-ups.
Apart from the notes on installation and safety in the documentation, the customer does not have to
observe any other points in direct connection with the UL (cUL)-certification of the equipment.
UL 508C
UL 508C describes the fulfillment by design of minimum requirements for electrically operated
power conversion equipment, such as frequency converters and servo amplifiers, which is intended
to eliminate the risk of fire being caused by such equipment.
UL 840
UL 840 describes the fulfillment by design of air and insulation creepage spacings for electrical
equipment and printed circuit boards.
12 AX2040/2070 Product Manual
BECKHOFF
4 Handling
4.1 Transport
Only by qualified personnel in the manufacturer’s original recyclable packaging
l
Avoid shocks
l
Temperature –25 to +70°C (-13...158°F), max. 20K/hr rate of change
l
Humidity max. 95% relative humidity, no condensation
l
The servo amplifiers contain electrostatically sensitive components which can be
l
damaged by incorrect handling. Discharge yourself before touching the servo ampli
fier. Avoid contact with highly insulating materials (artificial fabrics, plastic films etc.).
Place the servo amplifier on a conductive surface.
If the packaging is damaged, check the unit for visible damage. In this case, inform the ship
l
per and the manufacturer.
4.2 Packaging
Cardboard box, can be recycled
l
Dimensions: (HxWxD) 410x470x490 mm
l
06/2007 Handling
-
-
Weight incl. accessories approx. ca. 25 Kg
l
Labeling : nameplate outside at the box
l
4.3 Storage
l
Storage only in the manufacturer’s original recyclable packaging
l
Max. stacking height 3 cartons
l
Storage temperature -25 to +55°C, max. rate of change 20°C / hour
l
Storage humidity 5 ... 95% relative humidity, no condensation
l
Storage duration Less than 1 year without restriction.
More than 1 year: capacitors must be re-formed before setting up and operating the servo
amplifier. To do this, remove all electrical connections and apply single-phase 230V AC for
about 30 minutes to the terminals L1 / L2.
4.4 Maintenance
The instruments do not require any maintenance, opening the instruments invalidates the warranty.
Cleaning : — if the casing is dirty: clean with Isopropanol or similar
— if there is dirt inside the unit it must be cleaned by the manufacturer
— dirty protective grill on fan must be cleaned with a dry brush
do not immerse or spray
4.5 Disposal
In accordance to the WEEE-2002/96/EG-Guidelines we take old devices and accessories back for
professional disposal, if the transport costs are taken over by the sender. Send the devices to:
Beckhoff Automation GmbH
Eiserstr. 5
D-33415 Verl
AX2040/2070 Product Manual 13
Package
5 Package
5.1 Package supplied
When you order a AX2040/2070 series amplifier, you will receive:
— AX2040/2070
— mating connectors X3, X4
The mating SubD connectors are not part of the package!
— Online documentation on CD-ROM
— Setup software DRIVE.EXE on CD-ROM
06/2007 BECKHOFF
Accessories:
— Mains filter 3EF required
— Mains choke 3L required
— AC Servomotor (linear or rotary)
— motor cable as a cut-off length
— brake cable as a cut-off length
— feedback cable (pre-assembled) or
both feedback connectors separately, with feedback cable as length
— external regen resistor BAS, usually required
— communications cable to the PC (ð p.67) or Y-adapter (ð p.88) for parameter setting of up
to 6 servo amplifiers from one PC
— power cable, control cables, fieldbus cables (as lengths)
5.2 Nameplate
The nameplate depicted below is attached to the side of the servo amplifier.
The information described0 below is printed in the individual fields.
Servo amplifier type
Typenbezeichnung
(must be ordered separately)
Eiserstr. 5
D-33415 Verl
Model Number
Expansions, optionsSerial number
Tel.: +49-(0)5246/963-0
Fax: +49-(0)5246/963-149
Ser.Nr
Ser.No.
E195162
Bemerkung
Enclosure Rating
U
CUS
L
®
LISTED
IND. CONT. EQ.
1VD4
Comment
Spannungsversorgung
Umgebungstemp.
Ambient temp.
008102106842
max. ambient
temperature
Power Supply
Nennstrom
Electrical supply
Installed load
Nom. Current
Output current
in S1 operation
Schutzart
5.76
Encl.Rating
14 AX2040/2070 Product Manual
BECKHOFF
5.3 Part number scheme
06/2007 Package
AX20 400 1 - 0000
Family
AX20 AX2000
Current rating
40 40A rms
70 70A rms
Voltage rating
0 230...480V
Expansions
0000 no expansion
B110 ETHERCAT
B200 Lightbus
B310 PROFIBUS
B520 DeviceNet
B750 SERCOS
B900 Ethernet
IO01 I/O-Expansion
electr. option
1AS
AX2040/2070 Product Manual 15
Technical description
06/2007 BECKHOFF
6 Technical description
6.1 The digital servo amplifiers of the series AX2040/2070
Standard version
2 current ratings (40 A, 70 A)
l
wide range of rated voltage (3x208V
l
shield connection directly at the servo amplifier
l
integrated CANopen (default 500 kBaud), for integration into CANbus systems and for
l
–10%
to 3x480V
setting parameters for several amplifiers via the PC-interface of one amplifier
integrated RS232, electrically isolated, integrated pulse-direction interface
l
-AS- built-in safety relay (personnel-safety starting lock-out), (ð p.69)
l
Slot for an expansion card
l
Synchronous servomotors, linear motors and asynchronous motors can be used
l
Power supply
With external mains filter and mains choke directly off grounded 3~ system,
l
230V
208V
-10%
-10%
... 480V
... 480V
+10%
+10%
,50Hz,
,60Hz,
+10%
)
TN-system, TT-system with earthed (grounded) neutral point, not more than 5000 rms symmetrical amperes, 480VAC maximum; when protected by fuses type Fusetron FRS-R-80
(Class RK5), manufactured by Bussman, or equivalent 480VAC min
Connection to other mains supply networks only with insulating transformer ð p. 46
l
BB6 rectifier bridge, off 3-phase earthed (grounded) supply, integral inrush circuit
l
Fusing (e.g. fusible cutout) provided by the user
l
All shielding connections directly on the amplifier
l
Output stage: IGBT- module with isolated current measurement
l
Regen circuit: with dynamic distribution of the regen power between several
amplifiers on the same DC bus link circuit, external regen resistor
l
DC bus link voltage 260 ... 900 VDC, can be switched in parallel
l
Interference suppression filter for the 24V aux. supply (to category C2) is integrated
External interference suppression filter for the supply input (to category C2)
required. External mains choke required.
Integrated safety
l
Safe electrical separation to EN 50178 between the power input / motor connections and the
signal electronics, provided by appropriate insulation/creepage distances and complete elec
trical isolation
l
Soft-start, overvoltage recognition, short-circuit protection, phase-failure monitoring
l
Temperature monitoring of servo amplifier and motor
(when using our motors with our pre-assembled cables)
-
Auxiliary supply voltage 24VDC
l
Electrically isolated, internal fusing, from an external 24VDC psu, e.g. with isolating transfor
mer
16 AX2040/2070 Product Manual
-
BECKHOFF
06/2007 Technical description
Operation and parameter setting
With our user-friendly software for setup through the serial interface of a PC
l
Direct operation by means of two keys on the servo amplifier and a 3-character LED display
l
for status display in case of no PC available
Fully programmable via RS232 interface
l
Completely digital control
Digital current controller (space vector pulse-width modulation, 62.5 µs)
l
Freely programmable digital speed controller (62.5 µs or 250 µs)
l
Integral position controller with adaptation possibilities for customer needs (250 µs)
l
Pulse direction interface integrated for connection of a servomotor to a stepping motor
l
control
Evaluation of the resolver signals and sine-cosine signals of a high-resolution encoder
l
Encoder simulation (incremental or SSI)
l
Comfort functions
2 analog monitor outputs
l
4 programmable digital inputs (normally, two are defined as limit-switch inputs)
l
2 programmable digital outputs
l
Freely programmable combinations of all digital signals
l
Expansions
-I/O-14/08- expansion card, ð p. 96
l
l
PROFIBUS DP expansion card, ð p. 99
l
SERCOS expansion card, ð p. 100
l
DeviceNet expansion card, ð p. 102
l
EtherCat expansion card, ð p. 105
l
-2CAN- Expansion module, separated connectors for CAN bus and RS232, ð p. 106
AX2040/2070 Product Manual 17
Technical description
6.2 Technical data
Rated data DIM AX2040 AX2070
Rated-supply voltage (grounded system)
Rated installed load for S1 operation kVA 30 50
Rated DC bus link voltage V= 290...675
Rated output current (rms value, ± 3%)
at 230V Arms 40 85
at 400V Arms 40 80
at 480V Arms 40 70
Peak output current (max. ca. 5s, ± 3%)
at 230V 80 160
at 400V 80 160
at 480V 80 140
Clock frequency of the output stage kHz 8
Technical data of the regen circuit — ð p.22
Overvoltage protection threshold V 450...900
Form factor of the output current
(at rated data and min. load inductance)
Bandwidth of subordinate current controller kHz > 1.2
Residual voltage drop at rated current V 5
Quiescent dissipation, output stage disabled W 40
Dissipation at rated current (incl. power
supply losses, without regen dissipation)
Inputs/Outputs
Setpoint 1/2, resolution 14bit/12bit V
Common-mode voltage max. V
Input resistance to AGND
Digital inputs
Digital outputs, open collector
BTB/RTO output, relay contacts
Aux. power supply, electrically isolated V 24 (-0% +15%)
without brake A 2 (max. 16)
Aux. power supply, electrically isolated V 24 (-0% +15%)
with brake (consider voltage loss!) A 5 (max. 16)
Min/max. output current, brake A 0.75 / 3
Connections
Control signals — Combicon 5,08 / 18 pole , 2,5mm²
Power signals — Terminals 10mm² — 50mm²
Resolver input — SubD 9pole (socket)
Sine-cosine encoder input — SubD 15pole (socket)
PC-interface, CAN — SubD 9pole (plug)
Encoder simulation, ROD (EEO) / SSI — SubD 9pole (plug)
Thermal control, Motor — min. 15VDC, 5mA
Mechanical
Weight kg 19.5 21
Height without shield sheet, w/o eyes (w. eyes) mm 345 (375)
Height with shield sheet, w/o eyes (w. eyes) mm 484 (495)
Width mm 250
Depth without connectors mm 300
Depth with connectors mm 325
06/2007 BECKHOFF
V~ 3 x 230V-10% ... 480V+10%, 50 Hz
V~ 3 x 208V-10% ... 480V+10%, 60 Hz
— 1.01
W 400 700
±10
±10
kW
V low 0...7 / high 12...36
mA 7
V max. 30
mA 10
V DC max. 30, AC max. 42
mA 500
20
18 AX2040/2070 Product Manual
BECKHOFF
6.2.1 Recommended torques
Connector Recommended torque
X3, X4 0.3 Nm (2.25 in lb)
X10 0,3 Nm (2.25 in lb)
X0 6...8 Nm (45... 60 in lb)
6.2.2 Fusing
Internal fusing
Circuit Internal fuse
Auxiliary supply 24V 4 AT
Regen resistor electronic
External fusing
Fusible cutouts or similar
(Fuse UL time delay)
AC supply F
Type of branch circuit fuses:
Class RK5, 480V min
Regen resistor F
* (x=SorS-Rfor480V applications x=NorN-Rfor230V applications ð p. 10)
Note: The AX2040/2070 drives are suitable for use on a circuit capable of delivering not more
than 5000rms symmetrical amperes, 480VAC max.
N1/2/3
B1/2
06/2007 Technical description
AX2040 AX2070
50 AT (FRx-50) * 80 AT (FRx-80) *
KLM 20 KLM 30
6.2.3 Ambient conditions, ventilation, mounting position
Storage, hints
Transport, hints
Supply voltage tolerances
Input power (ð p.46)
Aux. power supply
Ambient temperature in operation
Humidity in operation
Site altitude
Pollution level Pollution level 2 to EN60204/EN50178 Vibrations Noise emission Enclosure protection IP 20 Mounting position Ventilation
Make sure that there is sufficient forced ventilation within the switchgear cabinet.
ð p.13
ð p.13
min 3x230V
min 3x208V
AC / max 3x 480V
-10%
AC / max 3x 480V
-10%
24 VDC (-0% +15%), check voltage drop
0to+45
o
C (32 to 113 °F) at rated data
+45 to +55°C (113 to 131 °F) with power derating
rel. humidity 85%, no condensation
up to 1000m a.m.s.l. without restriction
1000...2500m a.m.s.l. with power derating 1.5%/100m
Class 3111 according to IEC 721-3-3
max. 45 dB(A)
generally vertical. ð p.34
forced convection by built-in fans
+10%
,50Hz
+10%
,60Hz
2.5% / K
AX2040/2070 Product Manual 19
Technical description
6.2.4 Conductor cross-sections
Observe the technical data for connection cables ð p. 41.
Following EN 60204 (for AWG: table 310-16 of the NEC 60°C or 75°C column), we recommend for
single-axis systems:
AC connection
DC bus link 25 mm² (2 awg), shielded for lengths > 20 cm, 600V,105°C (221°F)
Motor cables
Resolver, thermostat-motor
Encoder, thermostat-motor
Setpoints, monitors, AGND 0.25 mm² (22awg) twisted pairs, shielded
Control signals, BTB, DGND 0.5 mm² (20 awg)
Holding brake (motor)
+24 V / XGND
Regen resistor ð p.41, min. 10 mm² (6 awg), shielded, 1000V,105°C (221°F)
For multi-axis systems, please note the special operating conditions in your installation
To reach the max. permitted cable length, observe cable requirements ð p. 41.
25 mm² (2 awg), shielded between filter and amplifier, 600V,105°C
(221°F)
ð p.41, cross section see manual of the used motor series,
capacitance <250pF/m, 600V,105°C (221°F)
4x2x0.25 mm² (22awg) twisted pairs, shielded, max.100m,
capacitance <120pF/m
7x2x0,25 mm² (22awg) twisted pairs, shielded, max.50m,
capacitance <120pF/m
min. 1.5 mm² (14 awg), 600V,105°C (221°F), shielded,
check voltage drop
max. 2.5 mm² (12 awg), check voltage drop
06/2007 BECKHOFF
6.3 LED display
A 3-character LED display shows the amplifier status after switching on the 24V supply
(ð p.91). During operation and parameter setting of the amplifier via the keys on the front panel, the
parameter and function numbers (ð p.91) are displayed, as well as the numbers of any errors
which occur (ð p.92).
6.4 Grounding system
AGND — ground for analog inputs/outputs, internal analog/µC ground
DGND — ground for digital inputs/outputs, optically isolated
XGND — ground for external 24V aux. voltage, optically and inductively isolated
PGND — ground for encoder emulation, RS232, CAN, PROFIBUS, optically isolated
The potential isolation is shown in the block diagram (ð p. 43).
20 AX2040/2070 Product Manual
BECKHOFF
06/2007 Technical description
6.5 Control for motor holding brake
A 24 V / max. 3 A holding brake in the motor can be controlled directly by the servo amplifier.
Check voltage drop, measure the voltage at brake input and check brake function
(brake and no brake). This function does not ensure personnel safety!
The brake function must be enabled through the BRAKE parameter (setting: WITH BRAKE). In the
diagram below you can see the time and functional relationships between the ENABLE signal,
speed setpoint, speed and braking force.
During the internal ENABLE delay time of 100 ms (DECDIS) the speed setpoint of the servo ampli
fier is internally driven down a 10 ms ramp to 0. The brake output is switched on when a speed of
5rpm is reached or after 5s (EMRGTO) the latest.
The rise (tbrH) and fall (tbrL) times of the holding brake which is built into the motors are different
for the various types of motor (see motor manual).
A description of the interface can be found on page 48.
A safe (for personnel) operation of the holding brake requires an additional “make” (n.o.) contact in
the brake circuit and a suppressor device (varistor) for the brake.
Recommended brake circuit diagram :
AX2040/2070
AX2040/2070 Product Manual 21
-
Technical description
6.6 Regen circuit
During braking with the aid of the motor, energy is fed back to the servo amplifier. This energy is
converted into heat in the regen resistor (ð p. ). The regen resistor is switched into circuit by the
regen circuit. The regen circuit (thresholds) are adjusted to the supply voltage with the help of the
setup software.
Our customer service can help you with the calculation of the regen power which is required. A des
cription of the interface can be found on page 48.
Functional description:
1.- Individual amplifiers, not coupled through the DC bus link (DC+, DC-)
The circuit starts to respond at a DC bus link voltage of 400V, 720V or 840V (depending on the
supply voltage). If the energy which is fed back from the motor, as an average over time or as a
peak value, is higher than the preset regen power, then the servo amplifier will output the status
“regen power exceeded” and the regen circuit will be switched off. At the next internal check of the
DC bus link voltage (after a few ms) an overvoltage will be detected and the servo amplifier will be
switched off with the error message “Overvoltage F02” (ð p. 92).
The BTB/RTO contact (terminal X3/2,3) will be opened at the same time (ð p. 66).
2.- Several servo amplifiers coupled through the DC bus link circuit (DC+, DC-)
Thanks to the built-in regen circuit with its patented power distribution, several amplifiers (even with
different current ratings) can be operated off a common DC bus link. This is achieved by an auto
matic adjustment of the regen thresholds (which vary, because of tolerances).
The regen energy is distributed equally among all the amplifiers. The combined power of all the
amplifiers is always available, as continuous or peak power. The switch-off takes place as described
under 1. (above) for the servo amplifier with the lowest switch-off threshold (resulting from tolerances).
The RTO (BTB) contact of this amplifier (terminals X3/2,3) will be opened at the same time
(ð p. 66).
06/2007 BECKHOFF
-
-
Regen circuit: technical data
Supply voltage Rated data DIM AX2040 AX2070
External regen resistor Ohm 15 10
Upper switch-on level of regen circuit V 400 - 430
3 x 230 V
Switch-off level of regen circuit V 380 - 410
Overvoltage F02 V 450
Continuous power of regen circuit (R
Pulse power, external (R
max. 1s) kW 10 16
Bext
) max. kW 6
Bext
External regen resistor Ohm 15 10
Upper switch-on level of regen circuit V 720 - 750
3 x 400 V
Switch-off level of regen circuit V 680 - 710
Overvoltage F02 V 800
Continuous power of regen circuit (R
Pulse power, external (R
max. 1s) kW 35 50
Bext
) max. kW 6
Bext
External regen resistor Ohm 15 10
Upper switch-on level of regen circuit V 840 - 870
3 x 480 V
Switch-off level of regen circuit V 800 - 830
Overvoltage F02 V 900
Continuous power of regen circuit (R
Pulse power, external (R
max. 1s) kW 45 70
Bext
) max. kW 6
Bext
22 AX2040/2070 Product Manual
BECKHOFF
06/2007 Technical description
6.7 Switch-on and switch-off behavior
This chapter describes the switch-on and switch-off behavior of the AX2040/2070 and the steps
required to achieve operational stopping or emergency stop behavior that complies with standards.
The servo amplifier’s 24 V supply must remain constant. The ASCII commands
ACTFAULT (error response) and STOPMODE (ENABLE signal response) dictate
how the drive will behave.
STOPMODE ACTFAULT
0 (default) 0
1 1 (default)
Behavior during a power failure
The servo amplifiers use an integrated circuit to detect if one or more input phases (power supply
feed) fail. The behavior of the servo amplifier is set using the setup software: Under “Response to
Loss of Input Phase” (PMODE) on the Basic Setup screen, select:
Warning if the higher-level control system is to bring the drive to a standstill: Warning n05 is
l
output if an input phase is missing, and the motor current is limited to 4 A. The servo ampli
fier is not disabled. The higher-level control system can now selectively end the current cycle
or start bringing the drive to a standstill. Therefore, the error message “MAINS BTB, F16" is
output on a digital output of the servo amplifier and evaluated by the control system, for ins
tance.
Error message if the servo amplifier is to bring the drive to a standstill: Error message F19
l
is output if an input phase is missing. The servo amplifier is disabled and the BTB contact
opens. Where the factory setting is unchanged (ACTFAULT=1), the motor is braked using
the set “EMERGENCY STOP RAMP”.
Behavior when undervoltage threshold is reached
If the undervoltage threshold is undershot in the DC bus link (the threshold value depends on the
type of servo amplifier), the error message “UNDERVOLTAGE, F05" is displayed. The drive
response depends on the ACTFAULT/STOPMODE setting.
Behavior (see also ASCII reference in the online help of the se
tup software)
Motor coasts to a standstill in an uncontrolled manner
Motor is braked in a controlled manner
-
-
-
Behavior with enabled “holding brake” function
Servo amplifiers with an enabled holding brake function have a special procedure for switching off
the output stage ( ð p. 21). Removing the ENABLE signal triggers electrical braking. As with all
electronic circuits, the general rule applies that there is a possibility of the internal “holding brake”
module failing. Bringing a motor to a standstill using a holding brake in a way that is personnel safe
also requires an electromechanical “make” contact for the holding equipment and a suppressor
device for the brake.
Behavior of the restart lock -AS-
With the personnel safe restart lock –AS-, the drive can be secured on standstill using its internal
electronics so that even when power is being supplied, the drive shaft is protected against uninten
tional restart. The chapter “Personnel safe restart lock -AS-” describes how to use the restart lock
–AS-. See page 69 onwards.
-
AX2040/2070 Product Manual 23
Technical description
06/2007 BECKHOFF
6.7.1 Behavior in standard operation
The behavior of the servo amplifier always depends on the current setting of a number of different
parameters (e.g., ACTFAULT, VBUSMIN, VELO, STOPMODE, etc.; see online help). The diagram
below illustrates the correct functional sequence for switching the servo amplifier on and off.
DC bus link
Motor speed
Power stage
Enable (internal)
Devices which are equipped with a selected “Brake” function use a special sequence for switching
off the output stage (ð p. 21).
The built-in restart lock -AS- can be used to switch off the drive via a positive-action (approved by
Trade Liability Association) safety relay, so that personnel safety is ensured at the drive shaft
(ð p. 69).
24 AX2040/2070 Product Manual
BECKHOFF
06/2007 Technical description
6.7.2 Behavior in the event of an error (with standard setting)
The behavior of the servo amplifier always depends on the current setting of a number of different
parameters (e.g., ACTFAULT, VBUSMIN, VELO, STOPMODE, etc.; see online help). The diagram
shows the startup procedure and the procedure that the internal control system follows in the event
of one or more electrical supply phases failing, assuming that the standard parameter settings
apply.
(F16/F19 = error messages Mains BTB /input phase, F05 = error message Undervoltage)
Even if there is no intervention from an external control system (in the example, the ENABLE signal
remains active), the motor is immediately braked using the emergency stop ramp if an input phase
error is detected and assuming that no changes have been made to the factory setting (ACT
FAULT=1).
-
AX2040/2070 Product Manual 25
Technical description
06/2007 BECKHOFF
6.8 Stop/Emergency Stop Function to EN 60204
With the personnel safe restart lock –AS- (see page 69 onwards) the drive can be
secured on standstill (torque-free) using its internal electronics so that even when
power is being supplied, the drive shaft is protected against unintentional restart.
6.8.1 Stop: Standards
The Stop function is used to shut down the machine in normal operation. The Stop functions are
defined by EN 60204 (VDE 0113), paragraphs 9.2.2 and 9.2.5.3.
Category 0: Shut-down by immediate switching-off of the energy supply to the
drive machinery (i.e. an uncontrolled shut-down);
Category 1: A controlled shut-down , whereby the energy supply to the drive
machinery is maintained to perform the shut-down, and the energy
supply is only interrupted when the shut-down has been completed;
Category 2: A controlled shut-down, whereby the energy supply to the drive
machinery is maintained.
The parameters “STOPMODE” and “ACTFAULT” must be set to 1 in order to
implement the stop categories. If necessary, change the parameters via the
terminal screen of the setup software and store the data in the EEPROM.
The Stop Category must be determined by a risk evaluation of the machine. In addition, suitable
means must be provided to guarantee a reliable shut-down.
Category 0 and Category 1 Stops must be operable independently of the operating mode, whereby
a Category 0 Stop must have priority. Stop functions must be implemented by disconnection of the
appropriate circuitry, and have priority over assigned start functions.
If necessary, provision must be made for the connection of protective devices and lock-outs. If
applicable, the Stop function must signal its status to the control logic. A reset of the Stop function
must not create a hazardous situation.
26 AX2040/2070 Product Manual
BECKHOFF
06/2007 Technical description
6.8.2 Emergency Stop: Standards
The emergency Stop function is used for the fastest possible shut-down of the machine in a dan
gerous situation. The Emergency Stop function can be triggered by the actions of a single person. It
must be fully functional and available at all times. The user must not have to work out how to ope
rate this mechanism.
The Emergency Stop function is defined by EN 60204 (VDE 0113), paragraph 9.2.5.4.
In addition to the requirements for Stop, the emergency Stop must fulfil the following requirements:
emergency stop must have priority over all other functions and controls in all operating situa
l
tions;
the energy supply to any drive machinery that could cause dangerous situations must be
l
switched off as fast as possible, without causing any further hazards (e.g. by using mechani
cal latching devices that do not require an external supply of energy, by counter-current bra
king in Stop Category 1);
the reset must not initiate a restart.
l
If necessary, provision must be made for the additional connection of emergency stop devices (see
EN 60204, "Requirements for emergency stop devices").
The Emergency Stop must be effective as a stop of either Category 0 or Category 1.
The Emergency Stop Category must be determined by a risk evaluation of the machine.
Category 0
Only hard-wired, electromechanical components may be used for the Category 0 Emergency Stop
function. It must not be triggered using switching logic (hardware or software), by transferring commands via a communication network, or via a data link.
The drive must be shut down using an electromechanical circuit. If the connected servo motor has
an integrated brake, this must always be controlled by an electromechanical circuit as well.
-
-
-
-
-
Category 1
With the Category 1 Emergency Stop function, there must be absolute certainty in terms of the
power supply for the machine drives being switched off (i.e., secured) using electromechanical components. Additional Emergency Stop equipment may be connected. Bringing the motor to a standstill by interrupting the mains supply and using controlled electronic braking. The 24 V supply for the
servo amplifier must remain constant. The issue of which circuit should be used is highly dependent
on the requirements of the application at hand.
Usually a brake in a servo motor only has the function of a holding brake. To ensure an emergency
stop function, the braking torque that is required must be checked. If the holding brake fulfills the
dynamic requirements, it must be taken into acount that this application will cause increased wear.
The parameters “STOPMODE” and “ACTFAULT” must be set to 1 in order to
implement the stop categories. If necessary, change the parameters via the
terminal screen of the setup software and store the data in the EEPROM.
AX2040/2070 Product Manual 27
Technical description
06/2007 BECKHOFF
6.8.3 Implementation of the Stop Category 0
Bringing the motor to a standstill by immediately switching off the amplifier power supply (STOP
MODE & ACTFAULT parameters set to 1). The switching sequence is precisely determined by
this circuit in order to avoid undesirable fault messages and servo amplifier failures.
It is not possible to achieve a Category 0 shut-down with the servo amplifier alone, since hard-wired
electromechanical components are compulsory for this type of disconnection.
A brake that is built into the motor must have an additional electromechanical control circuit, as well
as the control through the AX2040/2070, in order to meet Category 0.
Usually a brake in a servo motor only has the function of a holding brake. To ensure an emergency
stop function, the braking torque that is required must be checked. If the holding brake fulfills the
dynamic requirements, it must be taken into acount that this application will cause increased wear.
Circuit suggestion
(with EMERGENCY STOP Category 0, control function with contactor relays)
-
AX2040/2070
28 AX2040/2070 Product Manual
BECKHOFF
06/2007 Technical description
6.8.4 Implementation of the Stop Category 1
Bringing the motor to a standstill by interrupting the mains supply and using controlled electronic
braking (STOPMODE & ACTFAULT parameters set to 1). The 24 V supply for the AX2040/2070
must remain constant.
The drive is braked in a controlled manner during the stopping (disabling) procedure. If the speed
VEL0 (see sequence diagram in chapter 6.5) is undershot, the holding brake is applied and the
output stage is disabled.
As soon as two separate time periods (set at the time relay) have elapsed, the mains supply and
the holding brake are electrically isolated.
Should an internal AX2040/2070 fault occur, the motor is forced to a standstill once
K20 drops out.
Circuit suggestion
(with EMERGENCY STOP Category 1, control function with contactor relays)
AX2040/2070
AX2040/2070 Product Manual 29
Technical description
06/2007 BECKHOFF
6.8.5 Implementation of the Stop Category 2
The machine receives an operational stop (disable) command and brakes the drive using the set
braking ramp (STOPMODE & ACTFAULT parameters set to 1).
The drive is braked in a controlled manner during the stopping (disabling) procedure. If the speed
VEL0 (see sequence diagram in chapter 6.5) is undershot, the holding brake is applied and the
output stage is disabled. In this case, there is no interruption of the electrical supply.
If the electrical supply is switched off, not only will the controlled braking procedure be performed,
but the mains supply and the holding brake will also be electrically isolated following a time period
set at the time relay.
Circuit suggestion
(with EMERGENCY STOP Category 1, control function with contactor relays)
AX2040/2070
30 AX2040/2070 Product Manual
Loading...