Festo CMMT-AS-C2-11A-P3 User manual

CMMT-AS-C2/3/5/7/12-11A-P3-...
Servo drive
Manual | Assembly,
Installation
8165079
2021-12e
[8165081]

Translation of the original instructions
BiSS®, CiA®, EnDat®, EtherCAT®, EtherNet/IP®, HEIDENHAIN®, Hiperface®, MODBUS®, PHOENIX CON-
TACT®, PI PROFIBUS PROFINET®, TORX® are registered trademarks of the respective trademark owners
in certain countries.

Festo — CMMT-AS-C2/3/5/7/12-11A-P3-... — 2021-12e
3
Table of contents
1 About this document. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Target group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Applicable documents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Product variants. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.4 Product labelling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.5 Specified standards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2 Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Safety instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 Intended use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2.1 Application areas. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2.2 Permissible components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3 Training of qualified personnel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.4 CE marking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.5 Safety engineering approval. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.6 UL/CSA certification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3Additional information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4 Product overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.1 Scope of delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2 System structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2.1 Product design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2.2 Overview of connection technology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.3 Set bus protocol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5 Transport and storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.1 Mounting distances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.2 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.1 Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.2 Residual current protective device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7.3 Mains fuse. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7.4 Permissible and impermissible mains types of system earthing. . . . . . . . . . . . . . . . . . . 29
7.5 Connection of the mains side PE conductor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
7.6 Information on EMC-compliant installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.7 Connection examples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
7.8 Interfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
7.8.1 [X1A], inputs and outputs for the higher-order PLC. . . . . . . . . . . . . . . . . . . . . . 39
7.8.2 [X1C], inputs and outputs for the axis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
7.8.3 [X2], encoder interface 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
7.8.4 [X3], encoder interface 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
7.8.5 [X10], SYNC IN/OUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
7.8.6 [X18], standard Ethernet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
7.8.7 [X19], Real-time Ethernet (RTE) port 1 and port 2 . . . . . . . . . . . . . . . . . . . . . . . 62

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7.9 Motor connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
7.9.1 [X6A], motor phase connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
7.9.2 [X6B], motor auxiliary connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
7.9.3 Electronic overload and over temperature protection for the motor. . . . . . . . 67
7.9.4 Shield support of the motor cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
7.10 Power and logic voltage supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
7.10.1 [X9A], power supply and DC link circuit connection. . . . . . . . . . . . . . . . . . . . . . 72
7.10.2 [X9C], logic voltage supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
7.10.3 [X9B], connection for braking resistor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
7.11 Cross-wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
7.11.1 Cross-wiring of the I/O signals at the connection [X1A]. . . . . . . . . . . . . . . . . . 77
7.11.2 Cross-wiring of the mains and logic voltage supply. . . . . . . . . . . . . . . . . . . . . . 80
8 Malfunctions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
8.1 Diagnostics via LED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
8.1.1 Device status displays. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
8.1.2 Interface status [X2], [X3], [X10], [X18]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
8.1.3 Device and interface status, EtherCAT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
8.1.4 Device and interface status, PROFINET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
8.1.5 Device and interface status, EtherNet/IP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
9 Disassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
10 Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
10.1 General technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
10.2 Technical data, electrical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
10.2.1 Load voltage supply [X9A]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
10.2.2 Logic voltage supply [X9C]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
10.2.3 Electrical data for braking resistor (internal/external) [X9B]. . . . . . . . . . . . . 103
10.2.4 Power specifications, motor connection [X6A]. . . . . . . . . . . . . . . . . . . . . . . . . 104
10.2.5 Motor auxiliary connection [X6B]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
10.2.6 Encoder interfaces [X2], [X3]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
10.2.7 Inputs, outputs, ready contact at [X1A]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
10.2.8 Inputs and outputs for the axis [X1C]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
10.2.9 SYNC IN/OUT [X10]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
10.2.10 Standard Ethernet [X18], parameterisation interface. . . . . . . . . . . . . . . . . . . 123
10.2.11 Real-time Ethernet [X19] ([XF1 IN], [XF2 OUT]). . . . . . . . . . . . . . . . . . . . . . . . . 123
10.3 Technical data UL/CSA certification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
10.4 Operation of the servo drive in the system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
10.4.1 Cable lengths in combination with Festo motors. . . . . . . . . . . . . . . . . . . . . . . 127
10.4.2 Power loss. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

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About this document
5
1 About this document
1.1 Target group
The document is targeted towards individuals who perform assembly, installation and service work on
the product.
1.2 Applicable documents
All available documents for the product è www.festo.com/sp.
The user documentation for the product also includes the following documents:
Identifier Table of contents
Operating instructions for the
product
Installation, safety sub-function
Manuals for the product Detailed description of assembly, installation
Detailed description of safety sub-function
Manual/online help plug-in Plug-in:
–Functions and operation of the software
–Initial commissioning wizard
Firmware functions:
–Configuration and parameterisation
–Operating modes and operational functions
–Diagnostics and optimisation
Bus protocol/control:
–Device profile
–Controller and parameterisation
Festo Automation Suite online
help
–Function of the Festo Automation Suite
–Management and integration of device-specific plug-ins
Operating instructions CDSB General functions of the operator unit
Tab. 1: User documentation for the product
1.3 Product variants
The product is available in a range of variants. The order code indicates the equipment features of the
product variant (order code è Further information).
This documentation describes the following product variants:
Feature Order code Type
Servo drive CMMT- Servo drive, series T
Motor type AS- AC synchronous
Nominal current C2- 2 A
C3- 3 A

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Festo — CMMT-AS-C2/3/5/7/12-11A-P3-... — 2021-12e
About this document
Feature Order code Type
Nominal current C5- 5 A
C7- 7 A
C12- 12 A
Nominal input voltage 11A- 400 V AC, 50 … 60 Hz
Number of phases P3- 3-phase
Bus protocol/control MP- Multi-protocol
EC- EtherCAT
EP- EtherNet/IP
PN- PROFINET
Safety function S1 Standard safety
Cooling method – Integrated cooling element
Firmware type – Basic type
C..- Customer variant …
S..- Sales variant …
Firmware version – Basic version
V..- Version …
Certification – CE-compliant basic version
Tab. 2: Product variants CMMT-AS-...-11A-P3 (e.g. CMMT-AS-C3-11A-P3-MP-S1)
This documentation refers to the following version:
–Servo drive CMMT-AS-...-S1, revision R01 and higher, see product labelling.
This is the first available revision.
•For later revisions of the product, check whether updated documentation is available è 3 Addi-
tional information.
1.4 Product labelling
• Observe the specifications on the product.
The product labelling is located on the right side of the device. The product labelling enables identifi-
cation of the product and shows the following information, for example:
Product labelling (example) Meaning
CMMT-AS-C2-11A-P3-MP-S1 Order code
5340821 MM-YYYY : J302 Rev 00 Part number, serial number (MM = production
month, YYYY = production year, plant number),
revision (Rev)
Main input: 3 x 200 V AC - 10% … 480 V AC + 10%
48 … 62 Hz 2 ARMS
Technical data on power supply (alternating
current supply connection)

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About this document
7
Product labelling (example) Meaning
Motor out: 3 x 0 … Input V AC 0 … 599 Hz
1.7 ARMS 0.8 kW
Technical data for the motor output (output
voltage, max. output frequency, nominal cur-
rent, nominal output power)
TAMB: max. 40 °C Ambient temperature (TAMB)
IP10/20 PD2 Degree of protection, without mating plug/with
mating plug X9A attached; pollution degree
SCCR: 10 kA
cUL restriction: only for use in WYE 480 V/277 V
supply sources1)
SCCR (short circuit current rating)
Operation on power supply systems with SCCR
£ 10 kA è 10.3 Technical data UL/CSA certifi-
cation
Specification of the permissible SCCR value.
Depending on the product variant, additional
specifications or restrictions may apply
R-R-FTO-KC-2018-1054 KC mark certificate (test mark for Korea)
MAC: XX-XX-XX-XX-XX-XX first MAC address of the device for Ethernet
communication
See manual for additional information Reference to the existing user documentation,
which contains information on overload protec-
tion and the necessary external circuit breaker.
Data matrix code 123456789AB Product key as a data matrix code and an 11-
character alphanumeric code
Festo SE & Co. KG Manufacturer
DE-73734 Esslingen Manufacturer’s address
Made in Germany Country of origin Germany
1) only for product versions with corresponding restrictions
Tab. 3: Product labelling (example)

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About this document
Warning symbols on the front of the product
Warning
symbol
Meaning with the CMMT-AS-...
Attention! Hot surface
Metallic housing parts of the device can reach high temperatures during operation.
In the event of a fault, internal components may become overloaded. Overloading of
components can result in high temperatures and the release of hot gases.
Attention! General danger point
The touch current in the protective earthing conductor can exceed an alternating cur-
rent of 3.5 mA or a direct current of 10 mA.
Always connect both protective earthing connections to the mains-side PE connection,
the PE pin of [X9A] and PE earthing screw on the housing.
The minimum cross section of the protective earthing conductor must comply with
the local safety regulations for protective earthing conductors for equipment with high
leakage current.
5 min
Attention! Dangerous voltage
The product is equipped with DC link capacitors, which store dangerous voltage for up
to 5 minutes after the power supply is switched off. Do not touch power connections for
5 minutes after the power supply is switched off.
After the power supply is switched off, wait at least 5 minutes until the DC link capaci-
tors have discharged.
Tab. 4: Meaning of the warning symbols

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Safety
9
Warnings on the product
The following warnings are attached to the right side of the device:
Warnings on the product (en, fr) Meaning
CAUTION
Risk of Electric Shock! Do not touch electrical connectors for
5 minutes after switching power off! Read manual before instal-
ling! High leakage current! First connect to earth!
Caution
Risk of electric shock! Do not
touch electrical connections for
5 minutes after switching power
off! Read manual before instal-
ling! High leakage current after
PE! First connect device to pro-
tective earthing!
AVERTISSEMENT
Risque du choc électrique! Une tension dangereuse peut ètre pré-
sentée jusqu'à 5 minutes aprés avoir coupé l'alimentation ! Lire le
manuel avant installation ! Courant de défaut élevée ! Relier tout
d´abord à la terre !
DANGER
Risk of Electric Shock! Disconnect power and wait 5 minutes
before servicing.
Danger
Risk of electric shock! Discon-
nect power and wait 5 minutes
before servicing.
Risque du choc électrique! Débranchez l'alimentation et attendez
5 min. avant de procéder à l'entretien.
WARNING
Hot surface - Risk of burn!
Warning
Hot surface – danger of burns!
ATTENTION
Risque de temperature élevée en surface!
Tab. 5: Warnings on the product
1.5 Specified standards
Version
IEC 60364-1:2005 EN 61131-2:2007
EN 61800-5-1:2007+A1:2017 EN 61800-2:2015
EN 60204-1:2018 EN IEC 61800-3:2018
EN 60529:1991+A1:2000+A2/AC:2019 EN 61800-5-2:2017
Tab. 6: Standards specified in the document
2 Safety
2.1 Safety instructions
General safety instructions
–Assembly and installation should only be carried out by qualified personnel.
–Only use the product if it is in perfect technical condition.
–Only use the product in its original condition without unauthorised modifications.
–Do not carry out repairs on the product. If defective, replace the product immediately.
–Observe the identifications on the product.

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Safety
–Take into account the ambient conditions at the location of use.
The safety function might fail and malfunctions might occur if you do not comply with the parame-
ters required for the ambient and connection conditions.
–The product may generate high frequency interference, which may require interference suppression
measures in residential areas.
–Wear required personal protective equipment during transport and during assembly and disas-
sembly of very heavy product versions.
–Never remove or insert a plug when the power is switched on.
–Do not loosen any screws on the product other than the following:
–Earthing screw on the cooling element for mounting the PE connection on the mains side
–Retaining screws of the shield clamp on the housing front
–Only when used in IT networks: screw for connecting the internal mains filter to PE
–Install the product in a suitable control cabinet. The minimum degree of protection required for the
control cabinet is IP54.
–Operate the product only in an installed condition when all required protective measures have been
taken (è EN 60204-1).
–Fully insulate all conducting lines on the product. We recommend wire end sleeves with plastic
sleeves for wiring power connections. During wiring, please observe the necessary strip lengths.
–Ensure correct protective earthing and shield connection.
–Prior to commissioning, ensure that the resulting movements of the connected actuator technology
cannot endanger anyone.
–During commissioning: systematically check all control functions and the communication and signal
interface between controller and servo drive.
–The product is equipped with DC link capacitors, which store dangerous voltage for up to 5 minutes
after the power supply is switched off. Before working on the product, switch off the power supply
via the main switch and secure it against being switched on again unintentionally. Before touching
the power connections, wait at least 5 minutes.
–Take into consideration the legal regulations for the installation location.
–Keep the documentation safe throughout the entire product lifecycle.
In the event of damage caused by unauthorised manipulation or any use other than the intended use,
the guarantee will be invalidated and the manufacturer will not be liable for damages.
In the event of damage caused by using unauthorised software or firmware with the device, the
warranty will be invalidated, and the manufacturer will not be liable for damages.
Safety instructions for the safety sub-functions of the product è Manual Safety sub-function.
2.2 Intended use
The servo drive CMMT-AS is intended for supply and control of AC servo motors. The integrated
electronics permit regulation of torque (current), rotational speed and position.
Use exclusively:
–in perfect technical condition
–in original condition without unauthorised modifications; only the extensions described in the
documentation supplied with the product are permitted

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Safety
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–within the limits of the product defined by the technical data è 10 Technical data
–in an industrial environment
The safety function might fail and malfunctions might occur if you do not comply with the parameters
required for the ambient and connection conditions.
Intended use of the safety sub-functions for the product è Manual Safety sub-function.
2.2.1 Application areas
The device is intended for use in an industrial environment and with appropriate measures in commer-
cial, residential and mixed areas.
The device is intended for installation in a control cabinet. The minimum degree of protection required
for the control cabinet is IP54.
The device can be operated in TN, TT and IT systems if certain requirements are met. Detailed informa-
tion on allowed and prohibited mains types of system earthing è 7.4 Permissible and impermissible
mains types of system earthing.
2.2.2 Permissible components
If holding brakes and clamping units without certification are used, a risk assessment is required to
assess their suitability for the related safety-oriented application.
In addition to the requirements of EN 60204-1, the following requirements apply to other components
of the drive system from EN 61800-5-2:
–Annex D.3.5 and D.3.6 for motors
–Annex D.3.1 for motor and brake cables
–Annex D.3.4 for mating plugs
Components approved by Festo for the CMMT-AS fulfil these requirements.
2.3 Training of qualified personnel
The product may be installed and placed in operation only by a qualified electro technician, who is
familiar with the topics:
–installation and operation of electrical control systems
–applicable regulations for operating safety-engineering systems
Work on safety-related systems may only be carried out by qualified personnel trained in safety
engineering.
2.4 CE marking
The product has the CE marking.
The product-related EC/EU directives and standards are listed in the declaration of conformity
è www.festo.com/sp.
2.5 Safety engineering approval
The product is a safety device in accordance with the Machinery Directive. For details of the safety-ori-
ented standards and test values with which the product complies and fulfils, see è Manual Safety
sub-function, Technical data, safety engineering.

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Product overview
2.6 UL/CSA certification
Technical data and environmental conditions may be subject to change in order to comply with
Underwriters Laboratories Inc. (UL) certification requirements for the USA and Canada.
Deviating values è 10.3 Technical data UL/CSA certification.
3 Additional information
–Contact the regional Festo contact if you have technical problems è www.festo.com.
–Accessories and spare parts è www.festo.com/catalogue.
Firmware, software or configuration files è www.festo.com/sp.
4Product overview
4.1 Scope of delivery
Component Number
Servo drive CMMT-AS-... 1
Operating instructions CMMT-AS-... 1
Tab. 7: Scope of delivery
Below are some examples of the available accessories:
–Plug connector set for single wiring connection NEKM-C6-...-S
–Plug connector set for double wiring connection NEKM-C6-...-D
–External braking resistor CACR-...
–Motor cable NEBM-... , e.g. for the motor series EMMS-AS, EMME-AS and EMMT-AS
–Encoder cable, e.g. for the motor series EMMS-AS and EMME-AS
–Patch cable NEBC-..., e.g. for linkage of the RTE interface [X19A/B]
–Operator unit CDSB-...
–Mains filter CAMF-C6-F
–Line choke CAMF-C6-FD
Up-to-date information on the accessories è www.festo.com/catalogue.
4.2 System structure
The servo drive CMMT-AS is a 1-axis servo drive. Depending on the product variant, the following
components, which are necessary for standard applications, are integrated into the device or into the
cooling profile of the device:
–Mains filter (guarantees immunity to interference and limits conducted emissions)
–Electronics for DC link voltage conditioning
–Power stage (for motor control)
–Braking resistor (integrated into the cooling element)
–Brake chopper (switches the braking resistor in the DC link circuit, if and when required)

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13
–Temperature sensors (for monitoring the temperature of the power module and of the air in the
device)
–Fan in the cooling profile (depending on product variant)
The device has separate connections for logic and load voltage supply. The load voltage supply comes
directly from the low-voltage network. The logic supply must be provided by a PELV fixed power supply
(+24 V DC).
The servo drive includes the option of connecting 2 encoders. In addition, the device has 1 switching
output for direct connection of the holding brake in the motor and 1 output for control of an external
clamping unit.
An external braking resistor can be connected instead of the internal braking resistor, if necessary.
The servo drive features a real-time Ethernet interface for process control. Various bus protocols are
supported depending on the product design (EtherCAT, EtherNet/IP or PROFINET).
The device can be parameterised via a PC using either the real-time Ethernet interface or the separate
standard Ethernet interface.
If required, the CDSB operator unit can be plugged in at the top of the front panel of the device. The
CDSB displays, for example, diagnostic information as well as setpoint and actual values in plain text.
To enable you to operate several servo drives in a device compound, the DC link circuits of several
devices can be coupled, and the power supplies and I/O signals of the devices can be linked through
cross-wiring. The DC link coupling can increase the energy efficiency of the device compound.
Festo recommends use of servo motors, electromechanical drives, lines and accessories from the
Festo accessory programme.

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Product overview
1
2
3
4
5
6
7
8
Fig. 1: System structure (example)
1
Bus/network
2
Main switch
3
Automatic circuit breaker/fuses and all-cur-
rent-sensitive RCD (residual current device)
(optional)
4
Fixed power supply for logic voltage supply
24 V DC (PELV)
5
External braking resistor (optional)
6
Servo drive CMMT-AS
7
Servo motor (here EMME-AS)
8
PC with Ethernet connection for parameteri-
sation

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Product overview
15
4.2.1 Product design
The device has a compact design. The connections are on the front and top of the device as pin
header, socket strip or RJ45 bushing. The shield clamp and strain relief for the motor cable are situated
in the lower area of the front panel.
1
2
3
4
5
6
Fig. 2: Servo drive CMMT-AS-C2/C3/C5-11A-P3 (example)
1
Hood
2
Cooling element
3
Top of device
4
Blind plate
5
Front panel
6
Shield clamp and strain relief for motor
cable
The cooling element on the back of the device serves to dissipate the heat from internal components
to the ambient air. The cooling element has one slot each on the top and bottom for mounting the
device on the rear wall of the control cabinet. If an operator unit is not required, the upper area is
covered with a blind plate.

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The back of the device is part of the cooling element. The braking resistor is integrated in the air duct
of the cooling element. The connecting cable for the braking resistor is passed from the cooling profile,
emerges from the top of the cooling profile and is connected to the connection [X9B].
The product variant CMMT-AS-C5-11A-P3 has a fan located in the air duct of the cooling element.
Some devices also have a fan in the interior. The device controls the fans independently. The fans are
only switched on briefly when the device is switched on, and as needed. The fans draw in cold ambient
air from beneath and blow the air upward through the profile. The air picks up heat from the profile in
the process.
1
2
3
2
5
4
Fig. 3: Back
1
Top slot (keyhole shape)
2
Retaining screw for braking resistor (2x)
3
Braking resistor
4
Bottom slot
5
Fan (CMMT-AS-C5/C7/C12-11A-P3 only)

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Product overview
17
4.2.2 Overview of connection technology
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Fig. 4: Connections of the CMMT-AS-C2-11A-P3 (example)
1
PE connection, housing
2
[X9A] Mains and DC link circuit connection
3
[X9C] Logic voltage
4
[XF2 OUT] RTE interface port 2
5
[XF1 IN] RTE interface port 1
6
[X1C] inputs/outputs for the axis
7
[X6B] motor auxiliary connection
8
[X6A] motor phase connection
9
Shield clamp of motor cable
10
[X2] encoder connection 1
11
[X3] encoder connection 2
12
[X10] device synchronisation
13
[X18] standard Ethernet
14
[X5] connection for operator unit (behind
the blind plate)
15
[X1A] I/O interface
16
[X9B] connection for braking resistor

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Product overview
12
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Fig. 5: Connections of the CMMT-AS-C7/C12-11A-P3 (example)
1
PE connection, housing
2
[X9A] Mains and DC link circuit connection
3
[X9C] Logic voltage
4
[XF2 OUT] RTE interface port 2
5
[XF1 IN] RTE interface port 1
6
[X1C] inputs/outputs for the axis
7
[X6B] motor auxiliary connection
8
[X6A] motor phase connection
9
Shield clamp of motor cable
10
[X2] encoder connection 1
11
[X3] encoder connection 2
12
[X10] device synchronisation
13
[X18] standard Ethernet
14
[X5] connection for operator unit (behind
the blind plate)
15
[X1A] I/O interface
16
[X9B] connection for braking resistor

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19
The blind plate can be pulled off by hand without tools. The operator unit CDSB can be plugged into
the free space è Documentation on the CDSB. If an operator unit is not used, the upper area must be
sealed with the blind plate.
4.3 Set bus protocol
The CMMT-AS-...-MP product variant supports several bus protocols.
The following options are available for setting the protocol:
–automatic detection by the CMMT-AS-...-MP
–Configuration in the CMMT-AS plug-in
–direct specification via SW1 to SW3
1
Fig. 6: Switches SW1, SW2, SW3 with the CMMT-
AS-...-MP
1
Switches SW1, SW2, SW3
Protocols supported by the firmware version used è Manual/online help plug-in, software, function,
fieldbus, device profile.
Protocol Size 3 Size 2 Size 1
Auto (detection or parameterisation) 0 0 0
PROFINET 0 0 1
EtherCAT 0 1 0
EtherNet/IP 0 1 1
Tab. 8: Switch setting bus protocol
The switches can be adjusted with a small slotted head screwdriver.
The switch position is evaluated once when the device is started.

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Assembly
5 Transport and storage
–Protect the product during transport and storage from excessive stress factors. Excessive stress
factors include:
–mechanical stresses
–impermissible temperatures
–moisture
–aggressive atmospheres
–Store and transport the product in its original packaging. The original packaging offers sufficient
protection from typical stresses.
6 Assembly
Dimensions CMMT-AS-C2/C3/C5-11A-P3...
Fig. 7: Dimensions
Dimen-
sion
L1 L2 L3 L4 L5 L6 L7
[mm] Approx.
242
200 220 22 10 6 16
Tab. 9: Dimensions CMMT-AS-C2/C3/C5-11A-P3... Part 1