Beckhoff EP3744-0041, EP3744-1041 Documentation
Documentation
EP3744-0041 and EP3744-1041
EtherCAT Box with digital inputs, outputs and differential
pressure inputs
Version:
Date:
2.2
2019-03-05
Table of contents
Table of contents
1 Foreword ....................................................................................................................................................5
1.1 Notes on the documentation..............................................................................................................5
1.2 Safety instructions .............................................................................................................................6
1.3 Documentation Issue Status..............................................................................................................7
2 Product overview.......................................................................................................................................8
2.1 EtherCAT Box - Introduction..............................................................................................................8
2.2 Introduction......................................................................................................................................10
2.3 Technical data .................................................................................................................................11
2.4 Process image.................................................................................................................................12
3 Mounting and connection.......................................................................................................................14
3.1 Mounting..........................................................................................................................................14
3.1.1 Dimensions ...................................................................................................................... 14
3.1.2 Fixing ............................................................................................................................... 15
3.1.3 Nut torque for connectors ................................................................................................ 16
3.2 Connection ......................................................................................................................................18
3.2.1 EtherCAT connection....................................................................................................... 18
3.2.2 EtherCAT - Fieldbus LEDs .............................................................................................. 20
3.2.3 Power Connection ........................................................................................................... 21
3.2.4 Status LEDs for power supply ......................................................................................... 24
3.2.5 Power cables ................................................................................................................... 25
3.2.6 Power cable conductor losses M8 ................................................................................... 26
3.2.7 Signal connection ............................................................................................................ 27
3.2.8 Status LEDs at the signal connections ............................................................................ 28
3.3 UL Requirements.............................................................................................................................29
4 Commissioning/Configuration ...............................................................................................................30
4.1 Inserting into the EtherCAT network................................................................................................30
4.2 Configuration via TwinCAT..............................................................................................................33
4.3 Object overview ...............................................................................................................................41
4.4 Object description and parameterization .........................................................................................47
4.4.1 Objects to be parameterized during commissioning........................................................ 47
4.4.2 Standard objects (0x1000-0x1FFF) ................................................................................. 51
4.4.3 Profile specific objects (0x6000-0xFFFF) ........................................................................ 58
4.5 Settings............................................................................................................................................62
4.6 Restoring the delivery state .............................................................................................................65
4.7 Firmware Update EL/ES/EM/EPxxxx ..............................................................................................66
5 Appendix ..................................................................................................................................................76
5.1 General operating conditions...........................................................................................................76
5.2 EtherCAT Box- / EtherCATPBox - Accessories ............................................................................77
5.3 Support and Service ........................................................................................................................78
EP3744-0041 and EP3744-1041 3Version: 2.2
Table of contents
EP3744-0041 and EP3744-10414 Version: 2.2
Foreword
1 Foreword
1.1 Notes on the documentation
Intended audience
This description is only intended for the use of trained specialists in control and automation engineering who
are familiar with the applicable national standards.
It is essential that the documentation and the following notes and explanations are followed when installing
and commissioning these components.
It is the duty of the technical personnel to use the documentation published at the respective time of each
installation and commissioning.
The responsible staff must ensure that the application or use of the products described satisfy all the
requirements for safety, including all the relevant laws, regulations, guidelines and standards.
Disclaimer
The documentation has been prepared with care. The products described are, however, constantly under
development.
We reserve the right to revise and change the documentation at any time and without prior announcement.
No claims for the modification of products that have already been supplied may be made on the basis of the
data, diagrams and descriptions in this documentation.
Trademarks
Beckhoff®, TwinCAT®, EtherCAT®, EtherCATP®, SafetyoverEtherCAT®, TwinSAFE®, XFC® and XTS® are
registered trademarks of and licensed by Beckhoff Automation GmbH.
Other designations used in this publication may be trademarks whose use by third parties for their own
purposes could violate the rights of the owners.
Patent Pending
The EtherCAT Technology is covered, including but not limited to the following patent applications and
patents: EP1590927, EP1789857, DE102004044764, DE102007017835 with corresponding applications or
registrations in various other countries.
The TwinCAT Technology is covered, including but not limited to the following patent applications and
patents: EP0851348, US6167425 with corresponding applications or registrations in various other countries.
EtherCAT® is registered trademark and patented technology, licensed by Beckhoff Automation GmbH,
Germany.
Copyright
© Beckhoff Automation GmbH & Co. KG, Germany.
The reproduction, distribution and utilization of this document as well as the communication of its contents to
others without express authorization are prohibited.
Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a
patent, utility model or design.
EP3744-0041 and EP3744-1041 5Version: 2.2
Foreword
1.2 Safety instructions
Safety regulations
Please note the following safety instructions and explanations!
Product-specific safety instructions can be found on following pages or in the areas mounting, wiring,
commissioning etc.
Exclusion of liability
All the components are supplied in particular hardware and software configurations appropriate for the
application. Modifications to hardware or software configurations other than those described in the
documentation are not permitted, and nullify the liability of Beckhoff Automation GmbH & Co. KG.
Personnel qualification
This description is only intended for trained specialists in control, automation and drive engineering who are
familiar with the applicable national standards.
Description of instructions
In this documentation the following instructions are used.
These instructions must be read carefully and followed without fail!
DANGER
Serious risk of injury!
Failure to follow this safety instruction directly endangers the life and health of persons.
WARNING
Risk of injury!
Failure to follow this safety instruction endangers the life and health of persons.
CAUTION
Personal injuries!
Failure to follow this safety instruction can lead to injuries to persons.
NOTE
Damage to environment/equipment or data loss
Failure to follow this instruction can lead to environmental damage, equipment damage or data loss.
Tip or pointer
This symbol indicates information that contributes to better understanding.
EP3744-0041 and EP3744-10416 Version: 2.2
1.3 Documentation Issue Status
Version Modifications
2.2 • Update technical data
2.1 • Update Safety instructions
• Correction in chapter Process image
• Correction in chapter Power cable
• Update chapter Mounting
2.0.0 • Migration
1.3.0 • Chapter Settings added
1.2.0 • Power Connection updated
1.1.0 • Front page updated
• EP3744-1041 added to EP3744-x041 introduction
• EP3744-1041 added to Technical Data
• Process image heading adapted
• Support and Service updated
• Safety instructions updated
• Notes on the documentation updated
• EtherCAT connection updated
• Nut torques for connectors updated
• EtherCAT cables updated
1.0.0 • First release
0.1.0 • Preliminary version
Foreword
Firmware and hardware versions
This documentation refers to the firmware and hardware version that was applicable at the time the
documentation was written.
The module features are continuously improved and developed further. Modules having earlier production
statuses cannot have the same properties as modules with the latest status. However, existing properties
are retained and are not changed, so that older modules can always be replaced with new ones.
The firmware and hardware version (delivery state) can be found in the batch number (D-number) printed on
the side of the EtherCATBox.
Syntax of the batch number (D-number):
D: WWYYFFHH
WW - week of production (calendar week)
YY - year of production
FF - firmware version
HH - hardware version
Example with D no. 50 13 03 01:
50 - week of production 50
13 - year of production 2013
03 - firmware version 03
01 - hardware version 01
EP3744-0041 and EP3744-1041 7Version: 2.2
Product overview
2 Product overview
2.1 EtherCAT Box - Introduction
The EtherCAT system has been extended with EtherCAT Box modules with protection class IP67. Through
the integrated EtherCAT interface the modules can be connected directly to an EtherCAT network without an
additional Coupler Box. The high-performance of EtherCAT is thus maintained into each module.
The extremely low dimensions of only 126x30x26.5 mm (hxw xd) are identical to those of the Fieldbus
Box extension modules. They are thus particularly suitable for use where space is at a premium. The small
mass of the EtherCAT modules facilitates applications with mobile I/O interface (e.g. on a robot arm). The
EtherCAT connection is established via screened M8connectors.
Fig.1: EtherCAT Box Modules within an EtherCAT network
The robust design of the EtherCAT Box modules enables them to be used directly at the machine. Control
cabinets and terminal boxes are now no longer required. The modules are fully sealed and therefore ideally
prepared for wet, dirty or dusty conditions.
Pre-assembled cables significantly simplify EtherCAT and signal wiring. Very few wiring errors are made, so
that commissioning is optimized. In addition to pre-assembled EtherCAT, power and sensor cables, fieldconfigurable connectors and cables are available for maximum flexibility. Depending on the application, the
sensors and actuators are connected through M8 or M12connectors.
The EtherCAT modules cover the typical range of requirements for I/O signals with protection class IP67:
• digital inputs with different filters (3.0ms or 10μs)
• digital outputs with 0.5 or 2A output current
• analog inputs and outputs with 16bit resolution
• Thermocouple and RTD inputs
• Stepper motor modules
XFC (eXtreme Fast Control Technology) modules, including inputs with time stamp, are also available.
EP3744-0041 and EP3744-10418 Version: 2.2
Fig.2: EtherCAT Box with M8 connections for sensors/actuators
Product overview
Fig.3: EtherCAT Box with M12 connections for sensors/actuators
Basic EtherCAT documentation
You will find a detailed description of the EtherCAT system in the Basic System Documentation for
EtherCAT, which is available for download from our website (www.beckhoff.com) under Downloads.
EtherCAT XML Device Description
You will find XML files (XML Device Description Files) for Beckhoff EtherCAT modules on our website (www.beckhoff.com) under Downloads, in the Configuration Files area.
EP3744-0041 and EP3744-1041 9Version: 2.2
Product overview
2.2 Introduction
Fig.4: EP3744-0041, EP3744-1041
EtherCAT Box with 6 digital inputs (24VDC, 10µs), 2 digital outputs (24V
pressure inputs
The EP3744-x041 EtherCAT Box with six digital inputs and two digital outputs records binary control signals
from the process level and transfers them, electrically isolated, to the controller. The signal status is
indicated by LEDs, the signals are connected via 3-pole M8 plug connectors (sockets).
Four pneumatic connections (6mm) offer the possibility to directly measure differential pressure. This value
is measured or calculated in relation to the fifth reference pressure connection (6mm).
The sensors and outputs are supplied from the control voltage Us. Since only one GND is available on the
M8 plug for the inputs and outputs, this alternative supply was selected.
The load voltage Up is not used in the input module, but may optionally be connected in order to be relayed
downstream.
Pressure measurement with EP3744-0041
The pressure is measured as an absolute value or as a differential value relative to the fifth connection via
an integrated 6mm fitting. The pressure values are available as 16-bit values. Measurement can take place
between -1bar and +1bar, wherein the value is output relative to the fifth connection, e.g. for vacuum
measurement in relation to the ambient pressure at the suction grippers. In absolute pressure mode,
pressures between 0 and 1bar can be measured.
0.5A) and reference
DC,
Pressure measurement with EP3744-1041
The pressure is measured as an absolute value or as a differential value relative to the fifth connection via
an integrated 6mm fitting. The pressure values are available as 16-bit values. Measurement can take place
between -7bar and +7bar, wherein the value is output relative to the fifth connection, e.g. for vacuum
measurement in relation to the ambient pressure at the suction grippers. In absolute pressure mode,
pressures between 0 and 7bar can be measured.
• Installation [}14]
• UL requirements [}29] for UL-approved modules
EP3744-0041 and EP3744-104110 Version: 2.2
Product overview
2.3 Technical data
Technical data EP3744-0041 EP3744-1041
Fieldbus EtherCAT
Fieldbus connection 2 x M8 socket (green)
Number of digital inputs 6 digital inputs
Input connections [}27]
Rated input voltage 24VDC (-15%/+20%)
Input filter 10µs (for digital inputs)
"0" signal voltage -3...+5V (EN61131-2, type3)
"1" signal voltage +11...+30V (EN61131-2, type3)
Input current typically 3mA (EN61131-2, type3)
Number of outputs 2 digital outputs
Output connections [}27]
Rated output voltage 24VDC (-15%/+20%)
Diagnostics Undervoltage detection <18VDC for Us and Up
Number of pressure inputs 4 pressure inputs + 1 reference pressure input, d = 6mm
Pressure connectors Fittings, d=6mm
Pressure sensors 15psi / 1034hPa 100psi / 6894hPa
Technology (optional) • Differential pressure measurement relative to reference
Measuring range differential pressure
measurement
Measuring range absolute pressure
measurement
Permissible media Non-aggressive gases
Resolution 1mbar per digit
Measuring error 3% of full scale value
Max. overload 3 x P
Resolution (raw value) 16bit
Conversion time 5 x cycle time
Min. cycle time 700µsec
Supply of the module circuitry from the control voltage Us
Current consumption of the module circuitry typically 120mA
Sensor supply from the control voltage Us
Sensor current consumption max. 0.5A, short-circuit proof overall
Power supply connection Power supply: 1 x M8 plug, 4-pole
Electrical isolation Control voltage/fieldbus: yes
Permissible ambient temperature during
operation
Permissible ambient temperature during
storage
Vibration/ shock resistance conforms to EN60068-2-6/ EN60068-2-27
EMC immunity/emission conforms to EN61000-6-2/ EN61000-6-4
Protection class IP65, IP66, IP67 (conforms to EN 60529)
Installation position variable
Approvals
4 x M8 (sockets 0, 1, 2 and 3)
2 x M8 (sockets 2 and 3)
pressure measuring point (default)
• Absolute pressure measurement
-1...1bar (-15...15psi) -7...7bar (-100...100psi)
0...1bar (0...15psi) 0...7bar (0...100psi)
max
Onward connection: 1 x M8 socket, 4-pole
-25°C ... +60°C
0 °C ... +55 °C (according to cULus, see UL requirements
[}29])
-40°C ... +85°C
CE,cULus [}29]
EP3744-0041 and EP3744-1041 11Version: 2.2
Product overview
2.4 Process image
Channel 1 to channel 16
The six digital inputs of the module can be found under DIG inputs 1 to 6.
• Input 1 - socket 0, pin 4
• Input 2 - socket 0, pin 2
• Input 3 - socket 1, pin 4
• Input 4 - socket 1, pin 2
• Input 5 - socket 2, pin 4
• Input 6 - socket 3, pin 4
The four pressure measuring inputs of the module can be found under AI
inputs Channel 1 to 4.
• Underrange: the pressure has fallen below the underrange value
• Overrange: the pressure has exceeded the overrange value
• Limit1: the Limit1 value specified in the CoE objects was reached
• Limit2: the Limit2 value specified in the CoE objects was reached
• Error: one of the above events has occurred
• Value: the measured pressure value in the unit pre-scaled in the CoE
objects (e.g. mbar)
The diagnostic data for the module can be found under DEV Inputs Device.
• Safe State Active: there was an interruption in communication, causing the
outputs to change to the safe state
• Sync error: a synchronization error has occurred
• Undervoltage Us: the voltage Us is less than approx. 18V
• Undervoltage Up: the voltage Up is less than approx. 18V
DC
DC
• TxPDO Toggle: EtherCAT variable for displaying a transmitted date of
receipt (see general EtherCAT documentation)
The two digital outputs of the module can be found under DIG outputs 1 and
2.
• Output 1 - socket 2, pin 2
• Output 2 - socket 3, pin 2
EP3744-0041 and EP3744-104112 Version: 2.2
Product overview
The output variables for setting or resetting the outputs of the module can be
found under DEV Output Device.
• Set safe state: outputs assume the defined value (see CoE objects)
• Reset Outputs: reserved
These are standard EtherCAT variables; more information in the general
EtherCAT manual.
EP3744-0041 and EP3744-1041 13Version: 2.2
Mounting and connection
3 Mounting and connection
3.1 Mounting
3.1.1 Dimensions
Fig.5: Dimensions of the EtherCAT Box Modules
All dimensions are given in millimeters.
Housing properties
EtherCAT Box lean body wide bodies
Housing material PA6 (polyamide)
Casting compound Polyurethane
Mounting two fastening holes Ø3mm for M3 two fastening holes Ø3mm for M3
two fastening holes Ø4.5mm for M4
Metal parts Brass, nickel-plated
Contacts CuZn, gold-plated
Power feed through max. 4A (M8)
max. 16A (7/8“)
max. 15.5A (B17 5G 1.5mm2)
Installation position variable
Protection class IP65, IP66, IP67 (conforms to EN 60529) when screwed together
Dimensions
(HxWxD)
app. 126 x 30 x 26.5mm app. 126 x 60 x 26,5mm
app. 150 x 60 x 26.5mm (without 7/8", B17)
EP3744-0041 and EP3744-104114 Version: 2.2
Mounting and connection
3.1.2 Fixing
Protection of connectors against contamination!
While mounting the modules, protect all connectors, especially the IP-Link, against contamination!
Only with connected cables or plugs the protection class IP67 is guaranteed! Unused connectors
have to be protected with the right plugs! See for plug sets in the catalogue.
Modules with narrow housing are mounted with two M3 bolts.
Modules with wide housing are mounted with two M3 bolts to the fixing holes located at the corners or
mounted with two M4 bolts to the fixing holes located centrally.
The bolts must be longer than 15 mm. The fixing holes of the modules are not threaded.
When assembling, remember that the fieldbus connectors increases the overall height. See chapter
accessories.
Mounting Rail ZS5300-0001
The mounting rail ZS5300-0001 (500 mm x 129 mm) allows the time saving assembly of modules.
The rail is made of stainless steel, 1.5 mm thick, with already pre-made M3 threads for the modules. The rail
has got 5.3 mm slots to mount it via M5 screws to the machine.
Fig.6: Mounting Rail ZS5300-000
The mounting rail is 500 mm long, that way 15 narrow modules can be mounted with a distance of 2 mm
between two modules. The rail can be cut to length for the application.
Mounting Rail ZS5300-0011
The mounting rail ZS5300-0011 (500 mm x 129 mm) has in addition to the M3 treads also pre-made M4
treads to fix 60 mm wide modules via their middle holes.
Up to 14 narrow or 7 wide modules may be mixed mounted.
EP3744-0041 and EP3744-1041 15Version: 2.2
Mounting and connection
3.1.3 Nut torque for connectors
M8 connectors
It is recommended to pull the M8 connectors tight with a nut torque of 0.4 Nm. When using the torque control
screwdriver ZB8800 is also a max. torque of 0.5Nm permissible.
Fig.7: EtherCAT Box with M8 connectors
M12 connectors
It is recommended to pull the M12 connectors tight with a nut torque of 0.6 Nm.
Fig.8: EtherCAT Box with M8 and M12 connectors
EP3744-0041 and EP3744-104116 Version: 2.2
7/8" plug connectors
We recommend fastening the 7/8" plug connectors with a torque of 1.5Nm.
Fig.9: 7/8" plug connectors
Torque socket wrenches
Mounting and connection
Fig.10: ZB8801 torque socket wrench
Ensure the right torque
Use the torque socket wrenches available by Beckhoff to pull the connectors tight (ZB8800,
ZB8801-0000)!
EP3744-0041 and EP3744-1041 17Version: 2.2
Mounting and connection
3.2 Connection
CAUTION
Druckluft
• Before connecting or disconnecting the module, check that the system is under pressure.
ð The compressed air connections must not be opened while the system is under pressure.
• The general safety and installation instructions for handling compressed air must be observed.
3.2.1 EtherCAT connection
For the incoming and ongoing EtherCAT connection,
• the EtherCAT Box (EPxxxx) has two M8 sockets, marked in green
• the Coupler Box (FBB-x110) has two M12 sockets
Fig.11: EtherCAT Box: M8, 30mm housing
Fig.12: EtherCAT Box: M860mm housing (example: EP9214)
EP3744-0041 and EP3744-104118 Version: 2.2
Mounting and connection
Fig.13: Coupler Box: M12
Assignment
There are various different standards for the assignment and colors of connectors and cables for Ethernet/
EtherCAT.
Ethernet/EtherCAT Plug connector Cable Standard
Signal Description M8 M12 RJ45
Tx + Transmit Data+ Pin 1 Pin 1 Pin 1 yellow
Tx - Transmit Data- Pin 4 Pin 3 Pin 2 orange
Rx + Receive Data+ Pin 2 Pin 2 Pin 3 white
Rx - Receive Data- Pin 3 Pin 4 Pin 6 blue
Shield Shield Housing Shroud Screen Screen Screen
1
ZB9010, ZB9020,
ZB9030, ZB9032,
ZK1090-6292,
ZK1090-3xxx-xxxx
2
2
2
2
ZB9031 and old versions
of ZB9030, ZB9032,
ZK1090-3xxx-xxxx
orange/white
orange
blue/white
3
blue
3
3
3
TIA-568B
white/orange
orange
white/green
green
1
) colored markings according to EN 61918 in the four-pin RJ45 connector ZS1090-0003
2
) wire colors according to EN 61918
3
) wire colors
Assimilation of color coding for cable ZB9030, ZB9032 and ZK1090-3xxxx-xxxx (with
M8 connectors)
For unification the prevalent cables ZB9030, ZB9032 and ZK1090-3xxx-xxxx this means the pre assembled cables with M8 connectors were changed to the colors of EN61918 (yellow, orange, white,
blue).So different color coding exists. But the electrical properties are absolutely identical.
EtherCAT connector
The following connectors can be supplied for use in Beckhoff EtherCAT systems.
Name Connector Comment
ZS1090-0003 RJ45 four-pole, IP20, field-configurable
ZS1090-0004 M12, male four-pin, IP67, for field assembly
ZS1090-0005 RJ45 eight-pole, IP20, field-configurable, suitable for gigabit Ethernet
ZS1090-0006 M8 plug connector four-pole, IP67, field-configurable, for cable type ZB903x
ZS1090-0007 M8 socket four-pole, IP67, field-configurable, for cable type ZB903x
ZS1090-1006 M8 plug connector four-pole, IP67, field-configurable up to OD=6.5mm
ZS1090-1007 M8 socket four-pole, IP67, field-configurable up to OD=6.5mm
EP3744-0041 and EP3744-1041 19Version: 2.2
Mounting and connection
3.2.2 EtherCAT - Fieldbus LEDs
Fig.14: EtherCAT-LEDs
LED display
LED Display Meaning
IN L/A off no connection to the preceding EtherCAT module
Lit LINK: connection to the preceding EtherCAT module
flashing ACT: Communication with the preceding EtherCAT module
OUT L/A off no connection to the following EtherCAT module
Lit LINK: connection to the following EtherCAT module
flashing ACT: Communication with the following EtherCAT module
Run off Status of the EtherCAT module is Init
flashes quickly Status of the EtherCAT module is pre-operational
flashes slowly Status of the EtherCAT module is safe-operational
Lit Status of the EtherCAT module is operational
EtherCAT statuses
The various statuses in which an EtherCAT module may be found are described in the Basic System Documentation for EtherCAT, which is available for download from our website (www.beck-
hoff.com) under Downloads.
EP3744-0041 and EP3744-104120 Version: 2.2
Mounting and connection
3.2.3 Power Connection
The feeding and forwarding of supply voltages is done via two M8 connectors at the bottom end of the
modules:
• IN: left M8 connector for feeding the supply voltages
• OUT: right M8 connector for forwarding the supply voltages
Fig.15: EtherCAT Box, Connectors for power supply
Fig.16: Pin assignment M8, Power In and Power Out
PIN assignment
Pin Voltage
1 Control voltage Us, +24V
2 Auxiliary voltage Up, +24V
DC
DC
3 GNDs* *) may be connected internally to each other depending on the module: see specific
4 GNDp*
module descriptions
The pins M8 connectors carry a maximum current of 4A.
Two LEDs display the status of the supply voltages.
NOTE
Don't confuse the power connectors with the EtherCAT connectors!
Never connect the power cables (M8, 24VDC) with the green marked EtherCAT sockets of the EtherCAT
Box Modules! This can damage the modules!
Control voltage Us: 24V
Power is supplied to the fieldbus, the processor logic, the inputs and the sensors from the 24VDC control
voltage Us. The control voltage is electrically isolated from the fieldbus circuitry.
DC
Auxiliary voltage Up 24V
DC
The Auxiliary voltage Up supplies the digital outputs; it can be brought in separately. If the load voltage is
switched off, the fieldbus functions and the power supply and functionality of the inputs are retained.
EP3744-0041 and EP3744-1041 21Version: 2.2
Mounting and connection
Redirection of the supply voltages
The IN and OUT power connections are bridged in the module (not IP204x-Bxxx and IE204x). The supply
voltages Us and Up can thus easily be transferred from EtherCATBox to EtherCATBox.
NOTE
Pay attention to the maximum permissible current!
Pay attention also for the redirection of the supply voltages Us and Up, the maximum permissible current
for M8 connectors of 4A must not be exceeded!
EP3744-0041 and EP3744-104122 Version: 2.2
Mounting and connection
Supply via EP92x4-0023 PowerBox modules
If the machine requires higher current or if the EtherCAT Box Modules are installed far away from the control
cabinet with included power supply, the usage of four cannel power distribution modules EP9214 or EP9224
(with integrated data logging, see www.beckhoff.com/EP9224) is recommended.
With these modules intelligent power distribution concepts with up to 2x16A and a maximum of 2.5mm²
cable cross-section can be realized.
Fig.17: EP92x4-0023, Connectors for Power In and Power Out
Fig.18: Pin assignment 7/8”, Power In and Power Out
EP3744-0041 and EP3744-1041 23Version: 2.2
Mounting and connection
Electrical isolation
Digital modules
In the digital input/output modules, the grounds of the control voltage (GNDs) and the auxiliary voltage
(GNDp) are connected to each other!
Check this at the documentation of each used EtherCAT Box.
Analog modules
In the analog input/output modules the grounds of the control voltage (GNDs) and the auxiliary voltage
(GNDp) are separated from each other in order to ensure electrical isolation of the analog signals from the
control voltage.
In some of the analog modules the sensors or actuators are supplied by Up - this means, for instance, that in
the case of 0...10 V inputs, any reference voltage (0...30 V) may be connected to Up; this is then available to
the sensors (e.g. smoothed 10 V for measuring potentiometers).
Details of the power supply may be taken from the specific module descriptions.
NOTE
Electrical isolation may be cancelled!
If digital and analog fieldbus boxes are connected directly via four-core power leads, the analog signals in
the fieldbus boxes may be no longer electrically isolated from the control voltage!
3.2.4 Status LEDs for power supply
Fig.19: Status LEDs for power supply
LED display
LED Display Meaning
Us (Control voltage) off The power supply voltage Us is not present
green illuminated The power supply voltage Us is present
red illuminated Because of overload (current>0.5A) the sensor supply
generated from power supply voltage Us was switched off for
all sensors fed from this.
Up (Auxiliary voltage) off The power supply voltage Up is not present
green illuminated The power supply voltage Up is present
EP3744-0041 and EP3744-104124 Version: 2.2
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