AUMA SGExC 05.1 User manual

Control
Parallel
Profibus DP
→Modbus
Foundation Fieldbus
Part-turn actuators
SGExC 05.1 –SGExC 12.1
Control unit: electromechanic
with actuator controls
AUMATIC ACExC 01.2 Intrusive
Assembly, operation, commissioningOperation instructions

Read operation instructions first.
●Observe safety instructions.
●These operation instructions are part of the product.
●Preserve operation instructions during product life.
●Pass on instructions to any subsequent user or owner of the product.
Purpose of the document:
This document contains information for installation, commissioning, operation and maintenance staff.It is intended
to support device installation and commissioning.
Reference documents:
●Manual (Operation and setting) AUMATIC AC 01.2 Modbus
●Manual (Device integration Fieldbus) AUMATIC AC 01.2 Modbus
Reference documents can be downloaded from the Internet (www.auma.com) or ordered directly from AUMA
(refer to <Addresses>).
Table of contents Page
51. Safety instructions................................................................................................................. 51.1. Basic information on safety 61.2. Range of application 61.3. Warnings and notes 71.4. References and symbols
82. Identification........................................................................................................................... 82.1. Name plate 92.2. Short description
113. Transport, storage and packaging........................................................................................ 113.1. Transport 113.2. Storage 113.3. Packaging
124. Assembly................................................................................................................................ 124.1. Mounting position 124.2. Ball handle: fit to handwheel 124.3. Part-turn actuator to valve: mount 134.3.1 Coupling 144.4. Mounting positions of local controls 154.4.1 Mounting positions: modify
165. Electrical connection............................................................................................................. 165.1. Basic information 185.2. Connecting via plug/socket connector with screw-type terminals (KP, KPH) 185.2.1 Terminal compartment: open 185.2.2 Cable connection 205.2.3 Bus cables: connect 215.2.4 Terminal compartment: close 225.3. Connecting via plug/socket connector with terminal blocks (KES) 225.3.1 Terminal compartment: open 235.3.2 Cable connection 245.3.3 Bus cables: connect 255.3.4 Terminal compartment: close
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SGExC 05.1 –SGExC 12.1 Control unit: electromechanic
Table of contents ACExC 01.2 Intrusive Modbus RTU

265.4. Accessories for electrical connection 265.4.1 Controls mounted to wall bracket 265.4.2 Parking frame 275.4.3 Protection cover
286. Operation................................................................................................................................ 286.1. Manual operation 286.1.1 Manual operation: engage 286.1.2 Manual operation: disengage 286.2. Motor operation 286.2.1 Local actuator operation 296.2.2 Actuator operation from remote 306.3. Menu navigation via push buttons (for settings and indications) 306.3.1 Menu layout and navigation 316.4. User level, password 326.4.1 Password entry 326.4.2 Password change 336.5. Language in the display 336.5.1 Language change
357. Indications.............................................................................................................................. 357.1. Indications during commissioning 357.2. Indications in the display 367.2.1 Feedback indications from actuator and valve 397.2.2 Status indications according to AUMA classification 407.2.3 Status indications according to NAMUR recommendation 417.3. Mechanical position indicator/running indication 427.4. Indication lights
438. Signals..................................................................................................................................... 438.1. Status signals via output contacts (digital outputs) 438.1.1 Assignment of outputs 438.1.2 Encoding of outputs 438.2. Analogue signals
449. Commissioning (basic settings)........................................................................................... 449.1. End stops in part-turn actuator 449.1.1 End stop CLOSED: set 459.1.2 End stop OPEN: set 459.2. Swing angle 469.2.1 Swing angle: modify 479.3. Type of seating: set 489.4. Bus address (slave address), baud rate, parity and monitoring time: set 489.5. Switch compartment: open 499.6. Torque switching: set 509.7. Limit switching: set 509.7.1 End position CLOSED (black section): set 519.7.2 End position OPEN (white section): set 519.8. Intermediate positions: set 529.8.1 Running direction CLOSE (black section):set 529.8.2 Running direction OPEN (white section): set 529.9. Test run 529.9.1 Direction of rotation: check
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SGExC 05.1 –SGExC 12.1 Control unit: electromechanic
ACExC 01.2 Intrusive Modbus RTU Table of contents

539.9.2 Limit switching: check 539.9.3 Reference operation position feedback: perform 539.10. Potentiometer setting 549.11. Electronic position transmitter RWG: set 559.12. Mechanical position indicator: set 559.13. Switch compartment: close 569.14. Operating time: set
5810. Corrective action.................................................................................................................... 5810.1. Faults during commissioning 5810.2. Fault indications and warning indications 6210.3. Fuses 6210.3.1 Fuses within the actuator controls 6410.3.2 Motor protection (thermal monitoring)
6511. Servicing and maintenance................................................................................................... 6511.1. Preventive measures for servicing and safe operation 6511.2. Disconnection from the mains 6611.3. Maintenance 6711.4. Disposal and recycling
6812. Technical data......................................................................................................................... 6812.1. Features and functions of actuator 7012.2. Features and functions of actuator controls 7312.3. Modbus interface 7412.4. Service conditions 7512.5. Accessories 7512.6. Further information
7613. Spare parts............................................................................................................................. 7613.1. Part-turn actuators SGExC 05.1 –SGExC 12.1 via plug/socket connector with screw-type
terminals (KP, KPH) 7813.2. ActuatorcontrolsAUMATIC ACExC01.2 with plug/socketconnector and screw-typeterminals
(KP, KPH) 8013.3. Actuator controls AUMATIC ACExC 01.2 with plug/socket connector and terminal blocks
(KES)
8214. Certificates.............................................................................................................................. 8214.1. Declaration of Incorporation and EC Declaration of Conformity 8314.2. ATEX certificate
8815. Index........................................................................................................................................
90Addresses...............................................................................................................................
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SGExC 05.1 –SGExC 12.1 Control unit: electromechanic
Table of contents ACExC 01.2 Intrusive Modbus RTU

1. Safety instructions
1.1 Basic information on safety
Standards/directives AUMA products are designed and manufactured in compliance with recognised
standards and directives.This is certified in a Declaration of Incorporation and an
EC Declaration of Conformity.
The end user or the contractor must ensure that all legal requirements, directives,
guidelines, national regulations and recommendations with respect to assembly,
electrical connection, commissioning and operation are met at the place of installation.
They include among others:
●Standards and directives such as IEC/EN 60079“Electrical apparatus for explo-
sive atmospheres" –
- Part 14: Electrical installations in hazardous areas (other than mines).
-Part 17:Inspection and maintenance of electrical installations in hazardous
areas (other than mines).
●Applicable configuration guidelines for fieldbus applications.
Safety instructions/war-
nings All personnel working with this device must be familiar with the safety and warning
instructions in this manual and observe the instructions given. Safety instructions
and warning signs on the device must be observed to avoid personal injury or property
damage.
Qualification of staff Assembly, electrical connection, commissioning, operation, and maintenance must
be carried out exclusively by suitably qualified personnel having been authorised by
the end user or contractor of the plant only.
Prior to working on this product, the staff must have thoroughly read and understood
these instructions and, furthermore, know and observe officially recognised rules
regarding occupational health and safety.
Work performed in potentially explosive atmospheres is subject to special regulations
which have to be observed.The end user or contractor of the plant are responsible
for respect and control of these regulations, standards, and laws.
Commissioning Prior to commissioning, it is important to check that all settings meet the requirements
of the application. Incorrect settings might present a danger to the application, e.g.
cause damage to the valve or the installation.The manufacturer will not be held
liable for any consequential damage. Such risk lies entirely with the user.
Operation Prerequisites for safe and smooth operation:
●Correct transport, proper storage, mounting and installation, as well as careful
commissioning.
●Only operate the device if it is in perfect condition while observing these instruc-
tions.
●Immediately report any faults and damage and allow for corrective measures.
●Observe recognised rules for occupational health and safety.
●Observe the national regulations.
●During operation,thehousingwarms up and surfacetemperatures > 60 °C may
occur.To prevent possible burns, we recommend checking the surface tempe-
rature using an appropriate thermometer and wearing protective gloves, if re-
quired, prior to working on the device.
Protective measures The end user or the contractor are responsible for implementing required protective
measures on site, such as enclosures, barriers, or personal protective equipment
for the staff.
Maintenance To ensure safe device operation, the maintenance instructions included in this manual
must be observed.
Any device modification requires prior consent of the manufacturer.
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SGExC 05.1 –SGExC 12.1 Control unit: electromechanic
ACExC 01.2 Intrusive Modbus RTU Safety instructions

1.2 Range of application
AUMA part-turn actuators are designed for the operation of industrial valves, e.g.
butterfly valves and ball valves.
The devices described below are approved for use in the potentially explosive
atmospheres of zones 1, 2, 21, and 22.
If temperatures >40 °C are to be expected at the valve mounting flange or the valve
stem (e.g.due to hot media), please consult AUMA.Temperatures > 40 °C are not
considered with regards to the non-electrical explosion protection.
Other applications require explicit (written) confirmation by the manufacturer.
The following applications are not permitted, e.g.:
●Industrial trucks according to EN ISO 3691
●Lifting appliances according to EN 14502
●Passenger lifts according to DIN 15306 and 15309
●Service lifts according to EN 81-1/A1
●Escalators
●Continuous duty
●Buried service
●Permanent submersion (observe enclosure protection)
●Potentially explosive areas of zones 0 and 20
●Potentially explosive areas of group I (mining)
●Radiation exposed areas in nuclear power plants
No liability can be assumed for inappropriate or unintended use.
Observance of these operation instructions is considered as part of the device's
designated use.
Information These operation instructions are only valid for the "clockwise closing" standard
version, i.e. driven shaft turns clockwise to close the valve.
1.3 Warnings and notes
The following warnings draw special attention to safety-relevant procedures in these
operation instructions, each marked by the appropriate signal word (DANGER,
WARNING, CAUTION, NOTICE).
Indicates an imminently hazardous situation with a high level of risk. Failure
to observe this warning could result in death or serious injury.
Indicates a potentially hazardous situation with a medium level of risk.Failure
to observe this warning could result in death or serious injury.
Indicates a potentially hazardous situation with a low level of risk. Failure to
observe this warning may result in minor or moderate injury.May also be used
with property damage.
Potentially hazardous situation. Failure to observe this warning may result in
property damage. Is not used for personal injury.
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SGExC 05.1 –SGExC 12.1 Control unit: electromechanic
Safety instructions ACExC 01.2 Intrusive Modbus RTU

Arrangement and typographic structure of the warnings
Type of hazard and respective source!
Potential consequence(s) in case of non-observance (option)
→Measures to avoid the danger
→Further measure(s)
Safety alert symbol warns of a potential personal injury hazard.
The signal word (here: DANGER) indicates the level of hazard.
1.4 References and symbols
The following references and symbols are used in these instructions:
Information The term Information preceding the text indicates important notes and information.
Symbol for CLOSED (valve closed)
Symbol for OPEN (valve open)
Important information before the next step.This symbol indicates what is required
for the next step or what has to be prepared or observed.
Via the menu to parameter
Describes the path within the menu to the parameter. By using the push buttons of
the local controls you may quickly find the desired parameter in the display.
< > Reference to other sections
Terms in brackets shown above refer to other sections of the document which provide
further information on this topic.These terms are either listed in the index, a heading
or in the table of contents and may quickly be found.
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SGExC 05.1 –SGExC 12.1 Control unit: electromechanic
ACExC 01.2 Intrusive Modbus RTU Safety instructions

2. Identification
2.1 Name plate
Each device component (actuator, controls, motor) is equipped with a name plate.
Figure 1: Arrangement of name plates
[1] Actuator name plate
[2] Controls name plate
[3] Motor name plate
[4] Additional plate, e.g. KKS plate (Power Plant Classification System)
[5] Explosion protection approval plate
Data for identification Figure 2: Actuator name plate
[1] Type and size of actuator
[2] Commission number
Figure 3: Controls name plate
[1] Type and size of the controls
[2] Commission number
[3] Wiring diagram
[4] Control
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SGExC 05.1 –SGExC 12.1 Control unit: electromechanic
Identification ACExC 01.2 Intrusive Modbus RTU

Figure 4: Explosion protection approval plate
[1] Ex symbol, CE mark, number of notified body
[2] EC type examination certificate
[3] Explosion protection classification - electrical explosion protection
[4] Explosion protection classification - dust protection
[5] Explosion protection classification - non-electrical explosion protection
Type and size These instructions apply to the following devices:
Part-turn actuators for open-close duty: SGExC 05.1, 07.1, 10.1, 12.1
Commission number An order-specific commission number is assigned to each device.This commission
number can be used to directly download the wiring diagram, inspection records and
further information regarding the device from the Internet: http://www.auma.com.
Wiring diagram The 9th position in the TPA wiring diagram: Position transmitter (actuator)
Control unit: electromechanical:
0= without position transmitter
A, B, J, K, L, N = potentiometer
C, D, E, G, H, M = RWG (electronic position transmitter)
Control unit: electronic:
I= MWG (magnetic limit and torque transmitter)
Control Modbus RTU = Control via Modbus RTU interface.
2.2 Short description
Part-turn actuator Definition in compliance with EN ISO 5211:
A part-turn actuator is an actuator which transmits a torque to the valve for less than
one full revolution.It need not be capable of withstanding thrust.
AUMA part-turn actuators are driven by an electric motor. A handwheel is provided
for manual operation.Switching off in end positions may be either by limit or torque
seating. Controls are required to operate or process the actuator signals.
Actuator controls TheAUMATIC actuator controls are used to operateAUMA actuators and aresupplied
ready for use.The controls may be mounted directly to the actuator or separately
on a wall bracket.
The functions of the AUMATIC controls include standard valve control in OPEN -
CLOSE duty, positioning, process control, logging of operating data, diagnostic
functions right through control via fieldbus.
Local controls/AUMA
ToolSuite Operation, setting, and display can be performed directly at the controls or
alternatively from REMOTE via a fieldbus interface.
When set to local control, it is possible to
●operate the actuator via the local controls (push buttons and display) and perform
settings (contents of these instructions).
●readin or out data ormodifyand save settings via the AUMAToolSuite software
(option), using a computer (laptop or PC).The connection between computer
and AUMATIC is wireless via Bluetooth interface (not included in these instruc-
tions).
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SGExC 05.1 –SGExC 12.1 Control unit: electromechanic
ACExC 01.2 Intrusive Modbus RTU Identification

Intrusive - Non-Intrusive ●Intrusive version (control unit: electromechanical):
Limit and torque setting is performed via switches in the actuator.
●Non-Intrusive version (control unit: electronic):
Limit and torque setting is performed via the controls, actuator and controls
housings do not have to be opened.For this purpose, the actuator is equipped
with an MWG (magnetic limit and torque transmitter), also supplying analogue
torque feedback signals/torque indication and analogue position feedback si-
gnals/position indication.
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SGExC 05.1 –SGExC 12.1 Control unit: electromechanic
Identification ACExC 01.2 Intrusive Modbus RTU

3. Transport, storage and packaging
3.1 Transport
For transport to place of installation, use sturdy packaging.
Hovering load!
Risk of death or serious injury.
→Do NOT stand below hovering load.
→Attach ropes or hooks for the purpose of lifting by hoist only to housing and NOT
to handwheel.
→Actuators mounted on valves: Attach ropes or hooks for the purpose of lifting
by hoist to valve and NOT to actuator.
→Actuatorsmountedtogearboxes:Attach ropes or hooks forthepurpose of lifting
by hoist only to the gearbox using eyebolts and NOT to the actuator.
→Actuators mounted to controls: Attach ropes or hooks for the purpose of lifting
by hoist only to the actuator and NOT to the controls.
3.2 Storage
Danger of corrosion due to inappropriate storage!
→Store in a well-ventilated, dry room.
→Protect against floor dampness by storage on a shelf or on a wooden pallet.
→Cover to protect against dust and dirt.
→Apply suitable corrosion protection agent to uncoated surfaces.
Damage on display caused by temperatures below permissible level!
→The AUMATIC actuator controls must NOT be stored below –30 °C.
Long-term storage If the device must be stored for a long period (more than 6 months) the following
points must be observed in addition:
1. Prior to storage:
Protect uncoated surfaces, in particular the output drive parts and mounting
surface, with long-term corrosion protection agent.
2. At an interval of approx.6 months:
Check for corrosion.If first signs of corrosion show, apply new corrosion protec-
tion.
3.3 Packaging
Our products are protected by special packaging for transport when leaving the
factory.The packaging consists of environmentally friendly materials which can easily
be separated and recycled.We use the following packaging materials: wood,
cardboard, paper, and PE foil. For the disposal of the packaging material, we
recommend recycling and collection centres.
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SGExC 05.1 –SGExC 12.1 Control unit: electromechanic
ACExC 01.2 Intrusive Modbus RTU Transport, storage and packaging

4. Assembly
4.1 Mounting position
AUMA actuators and actuator controls can be operated without restriction in any
mounting position.
4.2 Ball handle: fit to handwheel
To avoid damage during transport, the ball handle is fitted at the rear of the
handwheel.
Prior to commissioning, mount the ball handle into correct position:
1. Remove cap nut [1] and pull out ball handle [2].
2. Insert ball handle [2] in correct position and fasten with cap nut [1].
3. After ball handle fitting, remove label from handwheel.
4.3 Part-turn actuator to valve: mount
Danger of corrosion due to damage to paint finish and condensation!
→Touch up damage to paint finish after work on the device.
→After mounting, connect the device immediately to electrical mains to ensure
that heater prevents condensation.
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SGExC 05.1 –SGExC 12.1 Control unit: electromechanic
Assembly ACExC 01.2 Intrusive Modbus RTU

4.3.1 Coupling
Figure 7: Coupling fitting dimensions
[1] Coupling
[2] Valve shaft
[3] Grub screw
[4] Screw
Table 1: Coupling fitting dimensions
Z max [mm]Y max [mm]X max [mm]Type, size - mounting flange 60–9SGExC 05.1-F05 60–9SGExC 05.1-F07 60–9SGExC 07.1-F07 75–24SGExC 07.1-F10 77915SGExC 10.1-F10 97–32SGExC 10.1-F12 100–25SGExC 12.1-F12 120–45SGExC 12.1-F14 132–57SGExC 12.1-F16
1. Use handwheel to drive actuator to mechanical end stop.
Information: Assemble valve and actuator in the same end position.
- With butterfly valves: recommended mounting position is end position
CLOSED.
- With ball valves: recommended mounting position is end position OPEN.
2. Thoroughly degrease mounting faces of the mounting flange.
3. Apply a small quantity of grease to the valve shaft [2].
4. Place coupling [1] onto valve shaft [2] and secure against axial slipping by using
a grub screw, a circlip or a screw.Thereby, ensure that dimensions X,Y or Z
are observed (refer to figure and table <Coupling fitting dimensions>).
5. Apply non-acidic grease at splines of coupling.
6. Fit actuator.
Information: Ensure that the spigot (if provided) fits uniformly in the recess
and that the flanges are in complete contact.
7. If flange bores do not match thread:
7.1 Slightly rotate handwheel until bores line up.
7.2 If required, shift actuator position by one tooth on the coupling.
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SGExC 05.1 –SGExC 12.1 Control unit: electromechanic
ACExC 01.2 Intrusive Modbus RTU Assembly

8. Fasten actuator with screws [4].
Information:We recommend glueing the screws using sealing material to avoid
contact corrosion.
→Fasten screws [4] crosswise with a torque according to table:
Table 2: Tightening torques for screws
Tightening torqueTA[Nm]Screws
Thread Strength class 8.8
11M6 25M8 51M10 87M12
4.4 Mounting positions of local controls
The mounting position of the local controls is selected according to the order.If, after
mounting the actuator to the valve or the gearbox on site, the local controls are in
an unfavourable position, the mounting position can be changed at a later date.Four
mounting positions are possible.
Figure 8: Mounting positions A-2 and B-2
Figure 9: Mounting positions C-2 and D-2
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SGExC 05.1 –SGExC 12.1 Control unit: electromechanic
Assembly ACExC 01.2 Intrusive Modbus RTU

4.4.1 Mounting positions: modify
Flameproof enclosure, danger of explosion!
Risk of death or serious injury.
→Before opening, ensure that there is no explosive gas and no voltage.
→Handle cover and housing parts with care.
→Joint surfaces must not be damaged or soiled in any way.
→Do not jam cover during fitting.
Electrostatic discharge ESD!
Risk of damage to electronic components.
→Earth both operators and devices.
1. Loosen screws and remove the local controls.
2. Check whether O-ring is in good condition, correctly insert O-ring.
3. Turn local controls into new position and re-place.
Cable damage due to twisting or pinching!
Risk of functional failures.
→Turn local controls by a maximum of 180°.
→Carefully assemble local controls to avoid pinching the cables.
4. Fasten screws evenly crosswise.
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SGExC 05.1 –SGExC 12.1 Control unit: electromechanic
ACExC 01.2 Intrusive Modbus RTU Assembly

5. Electrical connection
5.1 Basic information
Danger due to incorrect electrical connection
Failure to observe this warning can result in death, serious injury, or property damage.
→The electrical connection must be carried out exclusively by suitably qualified
personnel.
→Prior to connection, observe basic information contained in this chapter.
→After connection but prior to applying the voltage, observe the <Commissioning>
and <Test run> chapters.
Wiring diagram/terminal
plan The pertaining wiring diagram/terminal plan (in German and English language) is
attached to the device in a weather-proof bag, together with these operation
instructions.Itcanalsobeobtained from AUMA (state commission no.,refertoname
plate) or downloaded directly from the Internet (www.auma.com).
Permissible networks
(supply networks) The controls (actuators) are suitable for for use in TN and TT networks with directly
earthed star point and a maximum voltage of 690 V AC.Use in IT networks is
permitted while observing the respective <Protection on site> for for maiximum supply
voltages of 600V AC.
Protection on site For short-circuit protection and for disconnecting the actuator from the mains, fuses
and disconnect switches have to be provided by the customer.
The current values for respective sizing is derived from the current consumption of
themotor (refertoelectrical data sheet) plus thecurrent consumption of the controls.
Table 3: Current consumption controls
Max. current consumptionMains voltage –30 %±10 %Permissible variation of the mains voltage 1,200 mA750 mA100 to 120 V AC 750 mA400 mA208 to 240 V AC 400 mA250 mA380 to 500 V AC 400 mA200 mA515 to 690 V AC
Table 4: Maximum permissible protection
max. protectionRated powerSwitchgear 16 A (gL/gG)up to 1.5 kWReversing contactor A1
If controls are mounted separately from actuator (controls on wall bracket):Consider
length and cross section of connecting cable when defining the protection required.
Use appropriate insulation monitors when working in power installations, for example
an insulation monitor measuring the pulse code.
Power supply for the
controls (electronics) In case of external supply of the controls (electronics):The external power supply
must have a reinforced insulation against the mains voltage in accordance with IEC
61010-1 and may only be supplied by a circuit limited to 150 VA in accordance with
IEC 61010-1.
Safety standards All externally connected devices shall comply with the relevant safety standards.
Cable installation in ac-
cordance with EMC Signal and bus cables are susceptible to interference.
Motor cables are interference sources.
●Lay cables being susceptible to interference or sources of interference at the
highest possible distance from each other.
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SGExC 05.1 –SGExC 12.1 Control unit: electromechanic
Electrical connection ACExC 01.2 Intrusive Modbus RTU

●The interference immunity of signal and bus cables increases if the cables are
laid close to the earth potential.
●If possible, avoid laying long cables and make sure that they are installed in
areas being subject to low interference.
●Avoid long parallel paths with cables being either susceptible to interference or
interference sources.
●For the connection of remote position transmitters, screened cables must be
used.
Type of current, mains
voltage and mains fre-
quency
Type of current, mains voltage and mains frequency must match the data on the
motor name plate.
Figure 10: Motor name plate (example)
[1] Type of current
[2] Mains voltage
[3] Mains frequency (for 3-ph and 1-ph AC motors)
Connecting cables ●For device insulation, appropriate (voltage-proof) cables must be used.Specify
cables for the highest occurring rated voltage.
●Use connecting cables with a minimum temperature range of +80 °C.
●For connecting cables exposed to UV radiation (outdoor installation), use UV
resistant cables.
Bus cables Only cables complying with the recommendations of EIA 485 specifications should
be used for Modbus wiring.
Cable recommendation:
Impedance: 135 to 165 Ohm, at a measurement frequency bet-
ween 3 and 20 MHz
Cable capacity: < 30 pF per metre
Wire diameter > 0.64 mm
Wire cross section: 0.34 mm², corresponds to AWG 22
Loop resistance: < 110 Ohm per km
Screening: CU shielding braid or shielding braid and shielding
foil
Prior to installation, please note:
●Connect maximum 32 devices to one segment.
●If more devices are to be connected:
- Connect several segments using repeaters.
●Respect a distance of minimum 20 cm between the bus cable and other cables.
●If possible, bus cables should be laid in a separate, conductive, and earthed
cable tray.
●Make sure to avoid potential differences between the individual devices on the
bus (perform an equipotential earth bonding).
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SGExC 05.1 –SGExC 12.1 Control unit: electromechanic
ACExC 01.2 Intrusive Modbus RTU Electrical connection

5.2 Connecting via plug/socket connector with screw-type terminals (KP, KPH)
5.2.1 Terminal compartment: open
Figure 11: Plug/socket connector KPH
[1] Cover
[2] Screws for cover
[3] O-ring
[4] Terminal compartment
[5] Terminal board
Hazardous voltage!
Risk of electric shock.
→Disconnect device from the mains before opening.
1. Loosen screws [2] and remove cover [1].
➥Terminal compartment [4] is designed for explosion protection Ex e (increased
safety).The flameproof compartment (type of protection Ex d) remains hereby
closed.
2. Insert cable glands with Ex e approval and of size suitable for connection cables.
➥The enclosure protection IP…stated on the name plate is only ensured if suita-
ble cable glands are used. Example: Name plate shows enclosure protection
IP 68.
3. Seal cable entries which are not used with approved plugs suitable for the re-
quired protection type.
4. Insert the wires into the cable glands.
5.2.2 Cable connection
Table 5: Terminal cross sections and tightening torques
Tightening torquesTerminal cross sectionsType 2 Nm(1.5)1) 2.5 –6 mm²
(flexible or solid)
Power terminals (U1, V1, W1)
PE connection 1 Nm0.75 –1.5 mm²
(flexible or solid)
Control contacts (1 to 50)
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SGExC 05.1 –SGExC 12.1 Control unit: electromechanic
Electrical connection ACExC 01.2 Intrusive Modbus RTU

with small clamp washers1)
1. Remove cable sheathing in a length of 120 –140 mm.
2. Strip wires.
→Controls max. 8 mm, motor 12 mm
3. For flexible cables: Use end sleeves according to DIN 46228.
4. Connect cables according to order-related wiring diagram.
Information: Two wires for each connection permitted.
→When using motor cables with a cross section of 1.5 mm²:Use small clamp
washers for connection to terminals U1, V1, W1 and PE (the small clamp
washers are provided in the electrical connection cover).
In case of a fault: Hazardous voltage while protective earth conductor is NOT
connected!
Risk of electric shock.
→Connect all protective earth conductors.
→Connect PE connection to external protective earth conductor of connecting
cables.
→Start running the device only after having connected the protective earth con-
ductor.
5. Tighten protective earth firmly to PE connection
Figure 13: PE connection
[1] PE connection, control cable
[2] PE connection, motor cable
Danger of corrosion: Damage due to condensation!
→After mounting, commission the device immediately to ensure that heater mini-
mises condensation.
Information Some actuators are equipped with an additional motor heater.The motor heater
minimises condensation within the motor and improves the start-up behaviour for
extremely low temperatures.
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SGExC 05.1 –SGExC 12.1 Control unit: electromechanic
ACExC 01.2 Intrusive Modbus RTU Electrical connection

5.2.3 Bus cables: connect
Figure 14:Terminal assignment for line topology (1-channel or 2-channel for AUMA
redundancy I or II)
□Channel 1: Further bus devices will follow (standard)
▣Channel 2: Further bus devices will follow (AUMA redundancy I or II only)
■Last bus device
n–1 Fieldbus cable from previous device (input)
n+1 Fieldbus cable to next device (output)
[XK] Terminal assignment according to wiring diagram (customer connection):
Channel 1:Terminals 31, 32 and 33, 34
Channel 2:Terminals 35, 36 and 37, 38 (AUMA redundancy I or II)
Figure 15: Terminal assignment for loop topology (2-channel)
□Channel 1
▣Channel 2
n–1 Fieldbus cable from previous device (input via channel 1)
n+1 Fieldbus cable to next device (input via channel 2)
[XK] Terminal assignment according to wiring diagram (customer connection)
20
SGExC 05.1 –SGExC 12.1 Control unit: electromechanic
Electrical connection ACExC 01.2 Intrusive Modbus RTU