Rapidly rotating motor shaft with high torque.
Contact with the motor shaft can cause burn injuries and abrasions.
Ensure that the rotating motor shaft and components attached to it cannot be
For all available documents relevant to the delivery status of the product
è www.festo.com/pk.
This brief description is intended solely for initial information. The user document
ation for the product also includes the following documents:
User documentation for the product
Manual
GDCE-EMCA-EC-DIO-...
Manual
GDCE-EMCA-EC-S1-...
Help for the EMCA FCT
plug-in
Special documentation
EMCA-EC_U L-...
Device and functional description;
Mounting, installation, commissioning and diagnostics
Description of the safety function “Safely switched-off torque”
(Safe torque off/STO)
Online help of the Festo Configuration Tool (FCT) for commissioning
and parameterisation
Requirements for operating the product in the USA and Canada in
accordance with certification by Underwriters Laboratories Inc. (U L)
1Safety
Always observe the safety information and warnings in the documentation of
the product and of the other components used.
Before mounting and installation work, switch off supply voltage and secure it
against being switched on again. Only switch on the supply voltage again when
mounting and installation work is complete.
Never remove or insert a plug connector when the motor controller is powered.
Observe the handling specifications for electrostatically sensitive devices.
Only enable the controller if the drive has been professionally installed and fully
parameterised.
Do not carry out repairs on the device. If defective, replace the device.
Do not loosen any screws except for the 4 screws on the housing cover.
Warning
Danger of burns from hot housing surfaces.
Touching the motor housing can cause burn injuries. This can frighten people
and cause them to act in an unpredictable manner. This can lead to other forms
of secondary damage.
Make sure that personnel cannot touch the motor housing.
Inform operating and maintenance staff about the possible hazards.
Let the drive cool down to room temperature before maintenance work.
Note
Gas formation with fire risk.
If cleaning agents make contact with the hot surface of the motor, gases can
form and ignite.
Prior to cleaning work, let the drive cool down to room temperature.
Pay attention to the instructions for use of the cleaning agent.
1.1 Use for intended purpose
The product is intended for driving and controlling electromechanical drives.
The product is intended for installation in a machine.
Use exclusively:
– In perfect technical condition
– In original status without unauthorised modifications; only the expansions
described in the documentation supplied with the product are permitted
– Within the limits of the product defined through the technical data
– In an industrial environment
The product is intended for use in industrial environments. Outside of industrial
environments, e.g. in commercial and mixed-residential areas, actions to suppress
interference may have to be taken.
1.2 Intended use of the STO function
The STO function (safe torque off) in accordance with EN61800-5-2 is intended to
shut down the torque of the integrated motor. The STO function prevents unexpec
ted start-up of the integrated motor. The STO function may only be used in applica
tions in which the specified safety characteristics suffice.
Safety characteristics
The product’s STO function fulfils requirements for the following characteristic
safety values:
– PLd/cat.3 in accordance with ENISO13849-1 (Performance Level/PL)
– SIL 2 in accordance with EN61800-5-2 (Safety Integrity Level/SIL)
– SIL CL2 in accordance with EN62061 (Claim Limit/CL)
The achievable safety level depends on the other components used to implement
the safety function.
To protect against unintended motor start-up, the controller of the product must
be activated via the connection [X6] with the category required for the application
in accordance with ENISO 13849-1, e.g. via an external safety relay.
Training of specialized personnel (requirements for staff)
The product may only be commissioned by an electrotechnically qualified person
who is familiar with the topics:
– installation and operation of electrical control systems
– applicable regulations for operating safety-engineering systems
– applicable regulations for accident prevention and occupational safety
– documentation for the product
Diagnostic coverage (DC) for the safety function
Diagnostic coverage is determined by including the product in the control chain and the
measures implemented for the diagnostics. In order to achieve the specified diagnostic
coverage, the status of the acknowledgment contact must be evaluated by the control
system every time the STO function is requested. If a potentially dangerous malfunction
is recognised during the diagnostics, appropriate measures must be taken to maintain
the safety level.
Note
The device cannot detect a cross circuit in the input circuit by itself.
If required, use a safety relay with cross-circuit detection.
Warning
Rapidly rotating motor shaft with high torque.
Clothing, jewellery and hair can be caught and wrapped around the shaft. People
can be injured as a result.
Make sure that clothing, jewellery or hair can not be caught by the rotating
motor shaft.
Ensure that clothing fits tightly.
Personnel with long hair must wear hair nets.
1.3 Foreseeable misuse of the STO function
The following foreseeable misuses are not approved as intended use:
– Bridging of the STO function
– Applications where switching off can result in hazardous movements or conditions
Note
The STO function must not be used as the sole safety function for drives that are
subject to permanent torque or force (e.g. suspended loads, vertical axes).
Page 2
1.4 Obligations of the operator for the safety function
The implemented safety function must be subjected to a regular and documented
performance test by a specialist during the period of use of the machine. The fre
quency of these tests must be determined by the machine operator based on the
specifications of the machine manufacturer.
Check the EMCA at least once per year.
2Requirements for product use
Provide the complete product documentation to the following personnel:
– the design engineer and the installer of the machine or system
– the personnel responsible for commissioning
Store the documentation throughout the entire product lifecycle.
Ensure compliance with the specifications in this documentation. Also observe
the information in the documentation for the other components and modules
(e.g. axial kit, gear unit, actuator, lines).
Comply with all of the legal regulations that are applicable for the destination,
as well as the following documents:
– regulations and standards
– regulations of the testing organisations and insurers
– national specifications
For correct and safe use of the STO function:
Conduct a risk evaluation for your machine.
Comply with the specified safety characteristics (è Chapter 9, Technical data).
Range of application and certifications
The EMCA with integrated STO safety function is a safety-related part of control
systems. The product has the CE marking. Certain configurations of the product
have been certified by Underwriters Laboratories Inc. (UL).
Certificates and declaration of conformity for the product
è www.festo.com/sp.
6 [X7]: Reference or limit switch 2
7 FE connection (flat plug)
8 [X4]: Power supply
9 OK LED (green)
aJ ERROR LED (red)
4Mounting
Note
Excessive axial and radial forces on the motor shaft can damage the motor.
Comply with maximum permissible shaft loads (è Chapter 9).
The mounting flange offers the following options for fastening:
– Fastening via 4 through-holes for screws of size M6
– Fastening via 4 female threads of size M4 (screw-in depth [mm]: 5).
Observe the assembly instructions for the additional components used
(e.g. axial kit, parallel kit, gear unit, shaft).
The drive must be mounted securely and free of tension.
1. Move the slide or cantilever of the driven mechanical system into a safe posi
tion.
2. Connect the EMCA to the driven mechanical system (è Assembly instructions
of the additional components used).
3. Tighten the mounting screws (4x). Tightening torque è Assembly instructions
of the additional components used.
5Electrical installation
Caution
Unexpected and unintended movement of the drive during mounting, installation
and maintenance work.
Before starting work: Switch off power supplies. Removal of the enable signal
at the EMCA is not sufficient.
Secure the power supplies against accidental reactivation.
5.1 Connections and cables
Caution
Unexpected and unintended movement of the drive as a result of incorrectly
assembled cables.
Only use the plug connectors provided and preferably the cables listed in
the specified accessories è www.festo.com/catalogue.
Lay all flexible cables so that they are free of kinks and mechanical stress,
e.g. in an energy chain. Observe the instructions for the axis and the additional
compo nents.
ESD protection
At unassigned plug connectors, there is the danger that damage may occur to
the product or to other system parts as a result of ESD (electrostatic dis
charge).
Comply with the handling specifications for electrostatically sensitive
devices.
Seal unassigned plug connectors with protective caps.
Earth system parts prior to installation.
Use appropriate ESD equipment (e.g. shoes, earthing straps).
The plugs for the connectors are included in the scope of delivery (assortment of
plugs NEKM-C).
Connect the EMCA to your network or directly to the PC via a hub/switch. Observe
line specification (è Device and functional description, GDCE-EMCA-EC-DIO-...).
Recommendation: Use the connecting cable NEBC-D12G4-... from Festo.
Note
Unauthorised access to the device can cause damage or malfunctions.
When connecting the device to a network:
Protect the network against unauthorised access.
Measures to protect the network include:
– firewall
– intrusion prevention system (IPS)
– network segmentation
– virtual LAN (VLAN)
– virtual private network (VPN)
– security at physical access level (port security)
Additional information è Guidelines and standards for security in information
technology, e.g. IEC 62443, ISO/IEC 27001.
[X6]PinDescription
1 NC1Acknowledgment contact:
2 NC2
3 +24 V DC
LOGIC OUT
4 STO 1Control ports for STO function
5 STO 2
6 GNDReference potential 0 V
– Potential-free
– Low impedance if the STO function has been reques
ted and activated via 2 channels
Logic voltage output (from [X4.1]), pin [X6.6] or [X4.2] is
the reference potential (0 V) (internally bridged)
1 +24 V DCVoltage output 24 V to power the reference or limit
2 Switch 1Signal input for reference switch or limit switch 1
3 GNDReference potential 0 V
switch 1 (configurable with FCT, not short-circuit safe).
[X1]PinDescription
1 TD+Transmitted data +
2 RD+Received data -
3 TD-Transmitted data –
4 RD-Received data –
5 –Not connected
HousingShield/F EShield/functional earth
5.3 Power supply [X4]
Warning
Danger of electric shock from voltage sources without safeguarding.
For the electrical power supply, use only PELV circuits (protective extra-low
voltage, PELV) in accordance with EN 60204-1.
Also observe the general requirements for PELV circuits in accordance with
EN 60204-1.
Use only voltage sources which guarantee reliable electrical isolation of
the operating and load voltage in accordance with EN 60204-1.
[X4]PinDescription
1 +24 V DCPower supply (logic and load voltage)
+19.2 V DC … +28.8 V DC
2 0 VGND, reference potential
If a screened supply cable is used, the cable screening can be connected to
the functional earth connection (flat plug).
Flat plugPinDescription
- FEOptional connection for the cable screening
counterplug: flat connector sleeve (6.3 x 0.8 mm²)
5.4 Braking resistor
[X5]PinDescription
1 ZK+Connection for the external braking resistor RBR 6 Ω.
The braking resistor CACR-LE2-6-W60 from Festo is suitable.
2 BR-CH
5.5 STO interface [X6]
The STO safety function (safe torque off) is described in detail in the document
GDCE-EMCA-EC-S1-.... The STO function should only be used in the manner
described in this document.
Recommendation for initial motor start-up without safety equipment:
– The setup must at least include an emergency stop switching device
– 2-channel switch-off via the control ports STO1 [X6.4] andSTO2 [X6.5]
[X8]PinDescription
1 +24 V DCVoltage output 24 V to power the reference or limit
2 Switch 2Signal input for reference switch or limit switch 2
3 GNDReference potential 0 V
switch 2 (configurable with FCT, not short-circuit safe).
5.7 I/O interface [X9]
[X9]Pin Type1)Mode 0Mode 1
1DINRecord selection 1
2DINRecord selection 2
3DINRecord selection 4
4DINRecord selection 8
5DINRecord selection 16
6DINRecord selection 32Jog+
7DOUTReady
8DOUTconfigurable
9–Output 24 V DC, looped through from [X4.1]
10DOUTAcknowledgeSetpoint Acknowledge
11DOUTMotion Complete
12DINControl mode 0/1
Low level = mode 0
13DINStartTeach
14DINBrake control/Delete
remaining path
15DINStop
16DINControl enable/Acknowledge error
17–Do not connect
18–GND (reference potential)
1) DIN = digital input; DOUT = digital output
Control mode 0/1
High level = mode 1
Jog–
5.8 External battery [X10] – only EMCA-EC-...-1TM
[X10]PinDescription
1 Battery + Connection for external battery (Position changes are
2 Battery –
(GND)
recorded for up to 7 days without supply voltage and
without battery (after charging for approx. 24 hours)). With
the EADA-A-9 battery from Festo, the duration is extended
up to 6 months.
5.9 Ensuring the IP degree of protection
Comply with requirements for securing the IP degree of protection
(è Device and functional description, GDCE-EMCA-EC-DIO-...).
6Commissioning
Communication of the product with a connected PC takes place via the TCP/IPv4
protocol.
Create network connection – example “point-to-point connection”
Requirement:
– The PC is configured as a DHCP client (usually the default setting for PCs).
– The EMCA is configured as a DHCP server (factory setting).
At initial commissioning, connect the EMCA directly to the PC.
Factory setting
DHCP server: active
IP address: http://192.168.178.1
Subnet mask: 255.255.255.0
Gateway: - (A gateway is not assigned.)
Page 4
Web server
The integrated web server provides read access to an English-language website.
FCT (Festo Configuration Tool)
The EMCA plug-in for the Festo Configuration Tool (FCT) supports all the steps
necessary for commissioning of the device.
Comply with the documentation for the product (è www.festo.com/pk).
Before switching on the power supply:
Check the installation:
Check all connections.
Check readiness to operate
1. Make sure that controller enable is switched off (pin X9.16).
2. Switch power supply on. The OK LED on the front of the device should now flash
green.
If the OK LED stays off, the device is not ready for operation. If the ERROR LED is
illuminated red, an error is reported whose cause must be found.
Further steps for commissioning è Help on the EMCA plug-in and device
and functional description GDCE-EMCA-EC-DIO-...
7Diagnostics and fault clearance
LEDLED statusEvent/status
Behaviour during the switch-on phase
OKFlashes greenStart-up phase, bootloader active
ERRORFlashes red
Behaviour in the operating phase
OKOffHardware is not ready for operation; an error is present.
Flashes greenHardware is ready for operation, but the signal “Control
GreenNormal operating status; hardware is ready for
ERROROffNo error, no warning
Flashes redA warning is indicated.
RedAn error is reported.
Identification sequence active
OKFlashing at the
ERROR
Behaviour with errors in the firmware update phase
OKOffFirmware update was cancelled due to an error.
ERRORFlashes red
same time
enable” is not present.
operation; signal “Control enable” is present
Feedback to the optical identification active
(can be activated via the web server)
8Cleaning, repair and disposal
Regarding care:
Clean the outside of the product with a soft cloth.
Repair or maintenance of the product is not permissible. If necessary,
replace the product.
Observe the local regulations for environmentally friendly disposal of elec
tronic components.
9Technical data
For detailed technical data on the STO interface è Description of
the safety function STO GDCE-EMCA-EC-S1-...
For additional technical data è Device and functional description
GDCE-EMCA-EC-DIO-...
Requirements for complying with the certified UL conditions if the product
is operated in the USA or Canada can be found in the separate UL special
documentation.
Safety reference data and safety specifications
Safety functionSTOSafe Torque Off (securely switched-off torque)
Category3In accordance with EN ISO 13849-1
Performance LevelPLdIn accordance with E N ISO 13849-1
Safety Integrity LevelSIL 2In accordance with EN 61800-5-2
SIL Claim LimitSILCL 2In accordance with EN 62061
DCavg[%]90Average diagnostic coverage
HFT1Hardware failure tolerance
SFF[%]> 90Safe failure fraction
PFH[1/hr]1 x 10-9Probability of dangerous failure per hour
T
Proof Test Interval[Years]20Inspection interval
Duration of use[years]20In accordance with EN ISO 13849-1
Type testThe STO function has been certified by an independent
testing body. EMCA certificate è www.festo.com/sp
Component/functionSuitable for use in category-1 systems and above according
to ENISO138491
(Average diagnostic coverage)
(Hardware fault tolerance)
(Probability of dangerous failure per hour)
Fig. 1 Safety reference data and safety specifications
General technical dataEMCA-...-S-...EMCA-...-M-...