AUMA SA Series User manual

Multi-turn actuators
SA 25.1 –SA 48.1/SAR 25.1 –SAR 30.1
AUMA NORM (without controls)
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.
Table of contents Page
41. Safety instructions................................................................................................................. 41.1. Basic information on safety 41.2. Range of application 51.3. Applications in Ex zone 22 (option) 51.4. Warnings and notes 61.5. References and symbols
72. Identification........................................................................................................................... 72.1. Name plate 72.2. Short description
83. Transport, storage and packaging........................................................................................ 83.1. Transport 83.2. Storage 83.3. Packaging
94. Assembly................................................................................................................................ 94.1. Mounting position 94.2. Handwheel fitting 104.3. Multi-turn actuator: mount to valve/gearbox 104.3.1 Output drive types B, B1 –B4 and E 104.3.1.1 Multi-turn actuator (with output drive types B1 –B4 or E):mount to valve/gearbox 114.3.2 Output drive type A 114.3.2.1 Stem nut: finish machining 124.3.2.2 Multi-turn actuator (with output drive type A):mount to valve 134.4. Accessories for assembly 134.4.1 Stem protection tube for rising valve stem
145. Electrical connection............................................................................................................. 145.1. Basic information 155.2. Motor connection 165.3. Connection with AUMA plug/socket connector 175.3.1 Terminal compartment: open 175.3.2 Cable connection 195.3.3 Terminal compartment: close 195.4. Accessories for electrical connection 195.4.1 Parking frame 205.4.2 Protection cover 205.4.3 Double sealed intermediate frame 205.4.4 Earth connection, external
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SA 25.1 –SA 48.1/SAR 25.1 –SAR 30.1
Table of contents

216. Operation................................................................................................................................ 216.1. Manual operation 216.1.1 Manual operation: engage 216.1.2 Manual operation: disengage 226.2. Motor operation
237. Indications.............................................................................................................................. 237.1. Mechanical position indicator/running indication
248. Signals..................................................................................................................................... 248.1. Feedback signals from actuator
259. Commissioning...................................................................................................................... 259.1. Switch compartment: open 259.2. Torque switching: set 269.3. Limit switching: set 269.3.1 End position CLOSED (black section): set 279.3.2 End position OPEN (white section): set 279.4. Intermediate positions: set 289.4.1 Running direction CLOSE (black section): set 289.4.2 Running direction OPEN (white section): set 289.5. Test run 289.5.1 Direction of rotation: check 299.5.2 Limit switching: check 309.6. Potentiometer setting 309.7. Electronic position transmitter RWG: set 319.8. Mechanical position indicator: set 329.9. Switch compartment: close
3310. Corrective action.................................................................................................................... 3310.1. Faults during commissioning 3310.2. Motor protection (thermal monitoring)
3411. Servicing and maintenance................................................................................................... 3411.1. Preventive measures for servicing and safe operation 3411.2. Maintenance 3511.3. Disposal and recycling
3612. Technical data......................................................................................................................... 3612.1. Features and functions of actuator 3812.2. Service conditions 3812.3. Further information
3913. Spare parts............................................................................................................................. 3913.1. Multi-turn actuators SA 25.1 –SA 48.1/SAR 25.1 –SAR 30.1
4114. Certificates.............................................................................................................................. 4114.1. Declaration of Incorporation and EC Declaration of Conformity
4415. Index........................................................................................................................................
46Addresses...............................................................................................................................
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SA 25.1 –SA 48.1/SAR 25.1 –SAR 30.1 Table of contents

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.
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.
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,thehousingwarmsup andsurfacetemperatures> 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.
1.2 Range of application
AUMA multi-turn actuators are designed for the operation of industrial valves, e.g.
globe valves, gate valves, butterfly valves, and ball valves.
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
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SA 25.1 –SA 48.1/SAR 25.1 –SAR 30.1
Safety instructions

●Escalators
●Continuous duty
●Buried service
●Permanent submersion (observe enclosure protection)
●Potentially explosive areas, with the exception of zone 22
●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 Applications in Ex zone 22 (option)
Actuators of the indicated series basically meet the requirements for applications in
dust hazardous locations of ZONE 22 in compliance with the ATEX directive 94/9/EC.
The actuators are designed to meet enclosure protection IP 67 or IP 68 and fulfil the
requirements of EN 50281-1-1:1998 section 6 - Electrical apparatus for use in
presence of combustible dust, requirements for category 3 electrical equipment -
protected by enclosures.
To comply with all requirements of EN 50281-1-1:1998, it is imperative that the
following points are observed:
●Incompliance with the ATEX directive94/9/EC,the actuatorsmust beequipped
with an additional identification –II3D IP6X T150 °C.
●The maximum surface temperature of the actuators, based on an ambient
temperature of +40 °C in accordance with EN 50281-1-1 section 10.4, is +150
°C.In accordance with section 10.4, an increased dust deposit on the equipment
was not considered for the determination of the maximum surface temperature.
●The correct connection of the thermoswitches or the PTC thermistors as well
as fulfilling the requirements of the duty type and the technical data are prere-
quisites for compliance with the maximum surface temperature of devices.
●The connection plug may only be plugged in or pulled out when device is dis-
connected from the mains.
●The cable glands used also have to meet the requirements of category II3 D
and must at least comply with enclosure protection IP 67.
●The actuators must be connected by means of an external ground connection
(accessory part) to the potential compensation or integrated into an earthed
piping system.
●The threaded plug (part no. 1.27) or the stem protection tube with protective
cap (part nos.160.1 and 160.2) for sealing the hollow shaft must imperatively
be mounted to guarantee tightness and therefore the combustible dust hazard
protection.
●As a general rule, the requirements of EN 50281-1-1 must be respected in dust
hazardous locations.During commissioning, service, and maintenance, special
care as well as qualified and trained personnel are required for the safe opera-
tion of actuators.
1.4 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.
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SA 25.1 –SA 48.1/SAR 25.1 –SAR 30.1 Safety instructions

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.
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.
1.5 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.
< > 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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SA 25.1 –SA 48.1/SAR 25.1 –SAR 30.1
Safety instructions

2. Identification
2.1 Name plate
Each device component (actuator, motor) is equipped with a name plate.
Figure 1: Arrangement of name plates
[1] Motor name plate
[2] Actuator name plate
[3] Additional plate, e.g. KKS plate (Power Plant Classification System)
Data for identification Figure 2: Actuator name plate
[1] Type and size of actuator
[2] Commission number
Type and size These instructions apply to the following devices:
Multi-turn actuators for open-close duty: SA 25.1, 30.1, 35.1, 40.1, 48.1
Multi-turn actuators for modulating duty: SAR25.1, 30.1
Version: NORM (without actuator controls)
Commission number An order-specific commission number is assigned to each device.This commission
number can be used to directly download the terminal plan, inspection records and
further information regarding the device from the Internet: http://www.auma.com.
2.2 Short description
Multi-turn actuator Definition in compliance with EN ISO 5210:
A multi-turn actuator is an actuator which transmits to the valve a torque for at least
one full revolution.It is capable of withstanding thrust.
AUMA multi-turn actuators are driven by an electric motor and are capable of
withstanding thrust in combination with output drive type A. For manual operation,
a handwheel is provided.Switching off in end positions may be either by limit or
torque seating. Controls are required to operate or process the actuator signals.
Actuators without controls can be equipped with AUMA controls at a later date.The
local controls are included in the AUMA controls.For enquiries and more information,
please state our commission no.(refer to actuator name plate).
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SA 25.1 –SA 48.1/SAR 25.1 –SAR 30.1 Identification

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.
→Actuatorsmounted to gearboxes:Attach ropesor hooksforthe purposeof 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.
Figure 3: Lifting the actuator using an eyebolt
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.
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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SA 25.1 –SA 48.1/SAR 25.1 –SAR 30.1
Transport, storage and packaging

4. Assembly
4.1 Mounting position
AUMA actuators can be operated without restriction in any mounting position.
4.2 Handwheel fitting
Information For transport purposes, handwheels from a diameter of 400 mm are supplied sepa-
rately.
Damage at the change-over mechanism due to incorrect assembly!
→Only pivot change-over lever manually.
→Do NOT use extensions as lever for operation.
→First engage manual operation correctly, then mount handwheel.
1. Manually lift the red change-over lever while slightly turning the shaft back and
forth until manual operation engages.
➥The manual operation is correctly engaged if the change-over lever can be lifted
by approx. 85°.
2. Attach handwheel over the red change-over lever then on to the shaft.
3. Release change-over lever (should snap back into initial position by spring ac-
tion, if necessary, push it back manually).
4. Secure handwheel using the circlip supplied.
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SA 25.1 –SA 48.1/SAR 25.1 –SAR 30.1 Assembly

4.3 Multi-turn actuator: mount to valve/gearbox
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 minimises condensation.
4.3.1 Output drive types B, B1 –B4 and E
Application ●For rotating, non-rising valve stem
●Not capable of withstanding thrust
Design Output drive bore with keyway:
●Types B1 –B4 with bore according to ISO 5210
●Types B and E with bore according to DIN 3210
●Later change from B1 to B3, B4, or E is possible.
Figure 6: Output drives
[1] Output drive types B1/B2 and B
[2] Hollow shaft with keyway
[3] Output drive types B3/B4 and E
[4] Output drive sleeve/output drive plug sleve with bore and keyway
Information Spigot at flanges should be loose fit.
4.3.1.1 Multi-turn actuator (with output drive types B1 –B4 or E): mount to valve/gearbox
1. Check if mounting flanges fit together.
2. Check whether bore and keyway match the input shaft.
3. Apply a small quantity of grease to the input shaft.
4. Place multi-turn actuator.
Information: Ensure that the spigot fits uniformly in the recess and that the
mounting faces are in complete contact.
5. Fasten multi-turn actuator with screws according to table.
Information: We recommend applying liquid thread sealing material to the
screws to avoid contact corrosion.
6. Fasten screws crosswise to a torque according to table.
Table 1: Tightening torques for screws
Tightening torqueTA[Nm]Screws Strength class 8.8Threads 214M16 431M20 1,489M30 2,594M36
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SA 25.1 –SA 48.1/SAR 25.1 –SAR 30.1
Assembly

4.3.2 Output drive type A
Application ●Output drive for rising, non-rotating valve stem
●Capable of withstanding thrust
4.3.2.1 Stem nut: finish machining
✔This working step is only required if stem nut is supplied unbored or with pilot
bore.
Figure 7: Design of output drive type A
[1] Stem nut
[2] Bearing
[2.1] Bearing race
[2.2] Bearing rim
[3] Spigot ring
1. Remove spigot ring [3] from output drive.
2. Remove stem nut [1] together with bearings [2].
3. Remove bearing races [2.1] and bearing rims [2.2] from stem nut [1].
Information: From sizes A 35.2 –48.2: Record the order of the bearing races
[2.1].
4. Drill and bore stem nut [1] and cut thread.
Information: When fixing in the chuck, make sure stem nut runs true!
5. Clean the machined stem nut [1].
6. Applysufficient Lithium soap EPmulti-purposegreaseto bearing rims [2.2] and
bearing races [2.1], ensuring that all hollow spaces are filled with grease.
7. Place greased bearing rims [2.2] and bearing races [2.1] onto stem nut [1].
Information: From sizes A 35.2 –48.2:Respect correct order of bearing races
[2.1].
8. Re-insert stem nut [1] with bearings [2] into output drive.
Information: Ensure that dogs or splines are placed correctly in the keyway of
the hollow shaft.
9. Screw in spigot ring [3] until it is firm against the shoulder.
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SA 25.1 –SA 48.1/SAR 25.1 –SAR 30.1 Assembly

4.3.2.2 Multi-turn actuator (with output drive type A): mount to valve
Figure 8: Assembly with output drive type A
[1] Valve stem
[2] Output drive type A
[3] Screws to actuator
[4] Valve flange
[5] Screws to output drive
1. If the output drive type A is already mounted to the multi-turn actuator:Loosen
screws [3] and remove output drive type A [2].
2. Check if the flange of output drive type A matches the valve flange [4].
3. Apply a small quantity of grease to the valve stem [1].
4. Place output drive type A on valve stem and turn until it is flush on the valve
flange.
5. Turn output drive type A until alignment of the fixing holes.
6. Screw in fastening screws [5], however do not completely tighten.
7. Fit multi-turn actuator on the valve stem so that the stem nut dogs engage into
the output drive sleeve.
➥The flanges are flush with each other if properly engaged.
8. Adjust multi-turn actuator until alignment of the fixing holes.
9. Fasten multi-turn actuator with screws [3].
10. Fasten screws [3] crosswise with a torque according to table.
Table 2: Tightening torques for screws
Tightening torqueTA[Nm]Screws Strength class 8.8Threads 214M16 431M20 1,489M30 2,594M36
11. Turn multi-turn actuator with handwheel in direction OPEN until valve flange
and output drive A are firmly placed together.
12. Tighten fastening screws [5] between valve and output drive type A crosswise
applying a torque according to table.
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SA 25.1 –SA 48.1/SAR 25.1 –SAR 30.1
Assembly

4.4 Accessories for assembly
4.4.1 Stem protection tube for rising valve stem
—Option —
Figure 9: Assembly of the stem protection tube
[1] Cap for stem protection tube
[2] Stem protection tube
[3] Sealing ring
1. Seal thread with hemp,Teflon tape, or thread sealing material.
2. Screw stem protection tube [2] into thread and tighten it firmly.
3. Push down the sealing ring [3] onto the housing.
4. Check whether cap for stem protection tube [1] is available and in perfect con-
dition.
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SA 25.1 –SA 48.1/SAR 25.1 –SAR 30.1 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.It canalso be obtained fromAUMA (statecommission no.,refer toname
plate) or downloaded directly from the Internet (www.auma.com).
Valve damage for connection without controls!
→NORM actuators require controls: Connect motor via controls only (reversing
contactor circuit).
→Observe the type of seating specified by the valve manufacturer.
→Observe wiring diagram.
Delay time Thedelaytime isthe time from the tripping of thelimit or torque switchesto themotor
power being switched off.To protect the valve and the actuator, we recommend a
delay time < 50 ms.Longer delay times are possible provided the operating time,
output drive type, valve type, and the type of installation are considered.We
recommend switching off the corresponding contactor directly by limit or torque
switch.
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 value for respective sizing is derived from the current consumption of
the motor (refer to electrical data sheet).
Limit and torque swit-
ches Limit and torque switches can be provided as single, tandem, or triple switches.Only
the same potential can be switched on the two circuits (NC/NO contact) of each
single switch. If different potentials are to be switched simultaneously, tandem
switches or triple switches are required.When using tandem/triple switches:
●For signalling use the leading contacts TSC1, TSO1, LSC1, LSO1.
●For switching off use the lagging contacts TSC, TSO, LSC, LSO.
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.
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SA 25.1 –SA 48.1/SAR 25.1 –SAR 30.1
Electrical connection

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 cable with appropriate minimum rated temperature.
●For connecting cables exposed to UV radiation (outdoor installation), use UV
resistant cables.
5.2 Motor connection
Hazardous voltage!
Risk of electric shock.
→Disconnect device from the mains before opening.
Motor connection is performed at motor connection compartment [2] for motors with
nominal currents exceeding 25 A.Motor connection can also be made via plug/socket
connector [1] in case of lower nominal currents.
Figure 11: Connection arrangement for sizes 25.1 –40.1
[1] AUMA plug/socket connector for control connections and motor connections
up to 25 A
[2] Motor connection compartment for motor connections exceeding 25 A
[3] Cable entry for motor connection
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SA 25.1 –SA 48.1/SAR 25.1 –SAR 30.1 Electrical connection

Figure 12: Connection arrangement for size 48.1
[1] AUMA plug/socket connector for control connections
[2] Motor connection compartment
Table 3: Cross sections and tightening torques for motor terminals
Tightening torquesCross sectionsOutput speedType 2.0 Nm0.5 –16 mm2
4 –22SA 25.1
SAR 25.1 3.5 Nm2.5 –35 mm2
32 –90 1.2 –2.4 Nm4 –16 mm2
4 –22SA 30.1
SAR 30.1 4.0 –5.0 Nm10 –35 mm2
32 –45 6.0 –12 Nm16 –70 mm2
63 –90 1.2 –2.4 Nm4 –16 mm2
4 –5.6SA 35.1 4.0 –5.0 Nm10 –35 mm2
8 –22 6.0 –12 Nm16 –70 mm2
32 –45 4.0 –5.0 Nm10 –35 mm2
4 –11SA 40.1 6.0 –12 Nm16 –70 mm2
16 –32 4.0 –5.0 Nm10 –35 mm2
4SA 48.1 6.0 –12 Nm16 –70 mm2
5.6 –16
5.3 Connection with AUMA plug/socket connector
Cross sections AUMA plug/socket connector:
●Power terminals (U1, V1, W1, U2, V2, W2): max. 6 mm² flexible/10 mm² solid
●PE connection : max. 6 mm² flexible/10 mm² solid
●Control contacts (1 to 50): max. 2.5 mm²
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SA 25.1 –SA 48.1/SAR 25.1 –SAR 30.1
Electrical connection

5.3.1 Terminal compartment: open
Figure 13: Connection AUMA plug/socket connector, version S
[1] Cover
[2] Screws for cover
[3] O-ring
[4] Screws for socket carrier
[5] Socket carrier
[6] Cable entry
[7] Blanking plug
[8] Cable gland (not included in delivery)
Hazardous voltage!
Risk of electric shock.
→Disconnect device from the mains before opening.
1. Loosen screws [2] and remove cover [1].
2. Loosen screws [4] and remove socket carrier [5] from cover [1].
3. Insert cable glands [8] suitable for connecting cables.
➥The enclosure protection IP...stated on the name plate is only ensured if suitable
cable glands are used.Example: Name plate shows enclosure protection IP
68.
4. Seal unused cable entries [6] with suitable blanking plugs [7].
5. Insert the cables into the cable glands [8].
5.3.2 Cable connection
✔Observe permissible cross sections.
1. Remove cable sheathing.
2. Strip wires.
3. For flexible cables:Use end sleeves according to DIN 46228.
4. Connect cables according to order-related wiring diagram.
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SA 25.1 –SA 48.1/SAR 25.1 –SAR 30.1 Electrical connection

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 PE conductors firmly to PE connection using ring lugs (flexible cables)
or loops (rigid cables).
Figure 15: PE connection
[1] Socket carrier
[2] Screw
[3] Washer
[4] Lock washer
[5] Protective earth with ring lugs/loops
[6] PE connection, symbol:
Danger of motor damage if PTC thermistors or thermoswitches are not
connected!
Our warranty for the motor will lapse if the motor protection is not connected.
→Connect PTC thermistors or thermoswitches to external controls.
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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SA 25.1 –SA 48.1/SAR 25.1 –SAR 30.1
Electrical connection

5.3.3 Terminal compartment: close
Figure 16: Example:Version S
[1] Cover
[2] Screws for cover
[3] O-ring
[4] Screws for socket carrier
[5] Socket carrier
[6] Cable entry
[7] Blanking plug
[8] Cable gland (not included in delivery)
Short-circuit due to pinching of cables!
Risk of electric shock and functional failures.
→Carefully fit socket carrier to avoid pinching the cables.
1. Insert the socket carrier [5] into the cover [1] and fasten with screws [4].
2. Clean sealing faces of cover [1] and housing.
3. Check whether O-ring [3] is in good condition, replace if damaged.
4. Apply a thin film of non-acidic grease (e.g.petroleum jelly) to the O-ring and
insert it correctly.
5. Fit cover [1] and fasten screws [2] evenly crosswise.
6. Fasten cable glands [8] applying the specified torque to ensure the required
enclosure protection.
5.4 Accessories for electrical connection
5.4.1 Parking frame
Application Parking frame for safe storage of a disconnected plug.
For protection against touching the bare contacts and against environmental
influences.
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SA 25.1 –SA 48.1/SAR 25.1 –SAR 30.1 Electrical connection

Figure 17: Parking frame
5.4.2 Protection cover
Protection cover for plug compartment when plug is removed.
The open terminal compartment can be closed using a protective cover (not
illustrated).
5.4.3 Double sealed intermediate frame
When removing the electrical connection or due to leaky cable glands, ingress of
dust and water into the housing may occur.This is prevented effectively by inserting
the double sealed intermediate frame [2] between the plug/socket connector [1] and
the housing of the device.The enclosure protection of the device (IP 68) will not be
affected, even if the electrical connection [1] is removed.
Figure 18: Electrical connection with double sealed intermediate frame
[1] Electrical connection
[2] Double sealed intermediate frame
[3] Actuator housing
5.4.4 Earth connection, external
As an option, the housing is equipped with an external earth connection (U-bracket)
to connect the device to the equipotential earth bonding.
Figure 19: Earth connection
20
SA 25.1 –SA 48.1/SAR 25.1 –SAR 30.1
Electrical connection