These instructions contain information necessary for the safe operation of the premo servo
actuator, referred to as the servo actuator in the following.
If this manual is supplied with an amendment (e.g. for special applications), then the information in
the amendment is valid. Contradictory specifications in this manual thereby become void.
In case of questions on the special applications, please contact WITTENSTEIN alpha GmbH.
The operator must ensure that these instructions are read through by all persons assigned to install,
operate, or maintain the servo actuator, and that they fully comprehend them.
Store these instructions within reach of the servo actuator.
These safety instructions should be shared with colleagues working in the vicinity of the device
to ensure individual safety.
The original instructions were prepared in German; all other language versions are translations of
these instructions.
1.1Signal words
The following signal words are used to indicate possible hazards, prohibitions, and important
information:
This signal word indicates an imminent danger that will cause serious
injuries or even death.
This signal word indicates a potential hazard that could cause serious
injuries and even death.
This signal word indicates a potential hazard that could cause minor
or serious injuries.
This signal word indicates a potential hazard that could lead to
material damage.
A note without signal word draws your attention to application tips or
especially important information when handling the servo actuator.
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About this manualpremo
1.2Safety symbols
The following safety symbols are used to indicate possible hazards, prohibitions, and important
information:
General dangerHot surfaceSuspended loadsDanger of being pulled in
Electric voltageFlammableHarmful to the
Component sensitive to
electrostatic discharge
1.3Design of the safety instructions
The safety instructions of these instructions are designed according to the following pattern:
Information
environment
A = Safety symbol (see Chapter 1.2 "Safety symbols")
B = Signal word (see Chapter 1.1 "Signal words")
C = Type and consequence of the danger
D = Prevention of the danger
1.4Information symbols
The following information symbols are used:
Indicates an action to be performed
Indicates the results of an action
Provides additional information on handling
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premoSafety
2Safety
This operating manual, especially the safety instructions and the rules and regulations valid for the
operating site, must be observed by all persons working with the servo actuator.
In addition to the safety instructions in this manual, also observe any (legal and otherwise)
applicable environmental and accident prevention rules and regulations (e.g. personal safety
equipment).
2.1EU Low Voltage Directive
The servo actuator has been constructed in accordance with the directive 2014/35/EU. Observe
applicable regulations for electrical installation (e.g. wire gauge, fuses).
It is the responsibility of the manufacturer of the plant to ensure all requirements for the entire
system are fulfilled.
2.2Dangers
The servo actuator has been constructed according to current technological standards and
accepted safety regulations.
To avoid danger to the operator or damage to the machine, the servo actuator may be put to use
only for its intended usage (see Chapter 2.4 "Intended use") and in a technically flawless and safe
state.
Read the general safety instructions before beginning work (see Chapter 2.7 "General safety
instructions").
2.3Personnel
Only technicians who have read and understood this operating manual may perform work on the
servo actuator. Based on their training and experience, technicians must be able to evaluate the
tasks assigned to them, in order to recognize and avoid risks.
2.4Intended use
The servo actuator is designed to be installed in or connected to the following machines, incomplete
machines or equipment:
-Stationary large-scale plant,
-Stationary industrial tools,
-Movable machines, not intended for road use and only provided for professional (industrial)
use
In particular the following points must be observed:
-The servo actuator must be controlled by a servo controller.
-The servo actuator must not be used in applications with special environmental conditions e.g.
vacuum, potentially explosive atmospheres, clean room or areas with radioactive
contamination.
-Additional points must be observed for use in the food industry or the pharmaceutical industry:
-The servo actuator may only be used next to or under the foodstuff/product area.
-Observe also 7.4 "Information on the lubricant used".
-For risk-free operation, required safety devices have to be present, properly installed, and fully
functional. They may not be removed, changed, bridged, or rendered ineffective.
-In case of an emergency shutdown, power failure and or damage to the electrical equipment,
the servo actuator must be
-switched off immediately,
-secured against uncontrolled re-activation,
-secured against uncontrolled after-running.
-The optionally installed brake is simply a holding brake and may only be utilized in emergency
stop situations for braking the running servo actuator.
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Safetypremo
2.5Reasonably foreseeable misuse
Any use that deviates from the approved technical data (e.g. speed, force, torque, temperature) is
not use as intended and is therefore not permitted.
In particular the following applications are not permitted:
-Operation of the servo actuator, without properly installing it in or connecting it to other
machines or other partly completed machines or equipment.
-Operation of the servo actuators in a defective state
-Operation of the servo actuator, without determining that the machine in which it is to be
installed complies with the provisions of the Machinery Directive 2006/42/EC.
-Operation of the servo actuator in a potentially explosive environment
-Assembly of the servo actuator without prior acknowledgment of the operating / assembly
manual
-Operation of the servo actuator without legible warning and information signs
-Use of improper lubricants
-Use of unsuitable servo controllers
-Use in improper installation, operating, performance and ambient conditions
-Assembly of the servo actuator by insufficiently competent personnel
2.6Guarantee and liability
Guarantee and liability claims are excluded for personal injury and material damage in case of
-Ignoring the information on transport and storage
-Improper use (misuse)
-Improper or neglected maintenance and repair
-Improper assembly / disassembly or improper operation (e.g. test run without secure
attachment)
-Operation of the servo actuator when safety devices and equipment are defective
-Operation of the servo actuator without lubricant
-Operation of a heavily soiled servo actuator
-Modifications or reconstructions that have been carried out without the approval of
WITTENSTEIN alpha GmbH
2.7General safety instructions
Faulty electrical connections or not approved, current-carrying
components can cause serious injuries and even death.
Have all electrical connection work performed by qualified technicians
only.
Immediately replace damaged cables or plugs.
During generator operation, voltage is induced. This can lead to lethal
current pulses.
Ensure that no plugs and connections are laying open during generator
operation.
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premoSafety
Objects flung out by rotating components can cause serious injuries.
Remove objects and tools from the servo actuator before putting it into
operation.
Rotating components on the servo actuator can pull in parts of the
body and cause serious injuries and even death.
Keep a sufficient distance to rotating machinery while the servo actuator
is running.
Secure the machine against restarting and unintentional movements
during assembly and maintenance work (e.g. uncontrolled lowering of
lifting axes).
A wrong direction of rotation or direction of movement may result in
serious injury or death.
The direction of rotation or movement may differ from the standard
IEC 60034–8.
Before and during startup, ensure that the servo actuator has the correct
direction of rotation or movement.
Be sure to avoid collision (caused e.g. by crashing against an end stop).
With the danger area secured, check the direction of rotation or
movement in a slow motion, ideally by limiting the current and torque.
A damaged servo actuator can cause accidents with the risk of injury.
Never operate a servo actuator that has been overloaded due to misuse
or a machine crash (see Chapter 2.5 "Reasonably foreseeable misuse").
Replace the affected servo actuators, even if no external damage is
visible.
Hot servo actuator housing (up to 125 °C) can cause serious burns.
Touch the servo actuator housing only when wearing protective gloves
or after the servo actuator has been idle for some time.
Loose or overloaded screw connections can damage the servo
actuator.
Always use a calibrated torque wrench to tighten and check all screw
connections for which a tightening torque has been specified.
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Safetypremo
Lubricants are flammable.
Do not spray with water to extinguish.
Suitable extinguishing agents are powder, foam, water mist and carbon
dioxide.
Observe the safety instructions of the lubricant manufacturer (see
Chapter 7.4 "Information on the lubricant used").
Solvents and lubricants can cause skin irritations.
Avoid direct skin contact.
Solvents and lubricants can pollute soil and water.
Use and dispose of cleaning solvents and lubricants properly.
2.8Safety signs
There is a safety sign on the servo actuator
housing that warns against hot surfaces. This
safety sign may not be removed.
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premoDescription of the servo actuator
3Description of the servo actuator
A
B
The servo actuator is a combination of a lowbacklash planetary gearbox (B) and an AC
servomotor (A).
The AC servomotor is a brushless 3-phase
synchronous motor with excitation by means of
permanent magnets located on the rotor. A resolver
or optical encoder takes care of the commutation or
speed regulation. An optional permanent-magnet
holding brake is integrated into the motor.
The standard manufactured versions of the premo SP line and the premo XP line output shaft are as
follows:
-Smooth output shaft
-Grooved output shaft
-Involute gearing
The premo TP line output shaft is constructed as
an output flange.
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Description of the servo actuatorpremo
WITTENSTEIN alpha GmbH
Walter-Wittenstein-Str. 1 | 97999 Igersheim
Mat.no.: 40000001-00-0
SN: 1234567
PBG 33FS-016FP01-6MKGTCW01
DIN EN 60034-1
P
N
[W]: 750
3~ PMSM
I
N
[A]: 4,19
n
1N
[min-1]: 2256
DRIVE: SIEMEN
Date KW/JJ
U
DC
[V]: 750
Ratio i: 16
n
1max
[min-1]: 6000
Th. Cl.: F I 155°C
Pos: XXX
I 0 [A]: 6,71
U
inN
[V]: 132
IP 65
Cust.mat.no.: 1735198
Lubrication: Oil OPTIG. SYNT. 800/220
E
N
F
GHI
J
KL
M
O
PQ
RS
T
UV
X
ABC
D
W
3.1Name plate
The name plate is attached to the servo actuator housing.
DesignationDesignation
AUL identification "cURus"MContinuous stall current of
BCE identificationNNominal output
CPlaceholder: QR codeONominal current of actuator
DAddress of manufacturerPInsulating material class /
EMaterial number / article codeQInduced voltage for nominal
FSerial numberRNominal input speed
GOrdering code (see 3.2 "Ordering code")SProtection class
HOperating voltageTProduction date
IGear ratioULubricant
JRating according to standardVMounting position
KMotor typeWServo converter
LMax. input speedXCustomer material number
Tbl-1: Name plate
the motor
max. winding temperature
speed
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premoDescription of the servo actuator
3.2Ordering code
123456789012345678901234567
PAG11CS–025FP01–6MPGSC–W01
®
premo
Product line
B = SP Line
A = TP Line
H = XP Line
Size
1
2
3
Sector package
G = General
Stator length
and Stator size
See next page
for options
Ratio
Characteristic
S = Standard
R = Flange with
slotted holes
(XP Line only)
Operating
voltage
5 = 320V
6 = 560V
Backlash
1 = Standard
0 = Reduced
Output shape
0 = Smooth shaft /
Flange
1 = Shaft with key /
Flange with
index bore
2 = Splined shaft
(DIN 5480)
3 = System output
4 = Other
Lubrication
P = Oil
G = Grease
F = Food-grade oil
H = Food-grade grease
Pin assignment
See next page
for options
Orientation
to flange
0 = 0°
1 = 90°
2 = 180°
3 = 270°
Electrical connection
See next page
for options
Cooling
C = Natural convection cooling
Brake type
S = Standard brake i = 40 – 100
T = Standard brake i = 16 – 35
0 = Without brake
Winding code
is assigned
by WITTENSTEIN
Gearbox model
F = Standard
Encoder
See next page
for options
Temperature sensor
P = PTC STM 160
T = PT1000
K = KTY 84-130
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Description of the servo actuatorpremo
RAngled integral socket, 1-cab
WAngled integral socket, 2-cab
SStraight integral socket, 1-cab
GStraight integral socket, 2-cab
1
WITTENSTEIN alpha-Standard
Temp. sensor in signal cable
2Siemens-compatible
4
WITTENSTEIN alpha-Standard
Temp. sensor in power cable
5Rockwell-compatible
6B&R-compatible
8Schneider-compatible
9Beckhoff-compatible
R
S
M
F
W
N
K
G
L
D
E
V
J
P
Ratio 16 to 35Ratio 40 to 100
Size12C1C
Size22D1D
Size33F1F
Electrical connection options
Pin assignment options
Encoder options
Stator length and stator size options
H
Resolver, 2-pin
EnDat 2.1 absolute, singleturn
EnDat 2.1 absolute, multiturn
EnDat 2.2 absolute, singleturn
EnDat 2.2 absolute, multiturn
HIPERFACE® absolute, singleturn
HIPERFACE® absolute, multiturn
HIPERFACE DSL* Safety absolute, singleturn
DRIVE-CliQ absolute, singleturn
DRIVE-CliQ absolute, multiturn
Rockwell absolute, singleturn
Rockwell absolute, multiturn
Rockwell DSL absolute, singleturn
Rockwell DSL absolute, multiturn
HIPERFACE DSL* Safety absolute, multiturn
3.3Performance statistics
3.4Weight
Refer to Chapter 9.4 "Technical specifications" for the maximum permitted speeds and torques.
The standard weights of the servo actuators (with resolver / encoder) are specified in the
tables "Tbl-2", "Tbl-3" and "Tbl-4". Depending on the design, the actual weight can deviate by up to
20 %.
3.4.1Weight of premo SP line
Without brakei = 16 – 353.65.611.7
Size of premo SP lineSize 1Size 2Size 3
With brakei = 16 – 354.16.513.4
Weight [kg]
i = 40 – 1003.25.110.0
i = 40 – 1003.55.510.6
Tbl-2: Weight of premo SP line [kg]
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premoDescription of the servo actuator
3.4.2Weight of premo TP line
Weight [kg]
Size of premo TP lineSize 1Size 2Size 3
Without brakei = 16 – 353.15.610.5
i = 40 – 1002.75.18.8
With brakei = 16 – 353.66.512.2
i = 40 – 1003.05.59.4
Tbl-3: Weight of premo TP line [kg]
3.4.3Weight of premo XP line
Weight [kg]
Size of premo XP lineSize 1Size 2Size 3
Without brakei = 16 – 353.35.511.4
i = 40 – 1002.95.09.7
With brakei = 16 – 353.86.413.1
i = 40 – 1003.25.410.3
Tbl-4: Weight of premo XP line [kg]
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premoTransport and storage
4Transport and storage
4.1Scope of delivery
Check the completeness of the delivery against the delivery note.
Missing parts or damage must be notified immediately in writing to the carrier, the
insurance company, or WITTENSTEIN alpha GmbH.
4.2Packaging
The servo actuator is delivered packed in foil and cardboard boxes.
Dispose of the packaging materials at the recycling sites intended for this purpose. Observe
the applicable national regulations concerning disposal.
4.3Transport
Suspended loads can fall and can cause serious injuries and even
death.
Do not stand under suspended loads.
Secure the servo actuator with suitable fasteners (e.g. belts) before
transport.
Specifications on the weights, refer to Chapter 3.4 "Weight".
Ambient temperatures between -20° C and +50° C are permissible for transport only.
Transport of servo actuators up to and including size 3
No special method is specified for transporting the servo actuator.
Lifting at the electrical connections or the output shaft / output flange is not permitted.
4.4Storage
Store the servo actuator in horizontal position and dry surroundings at a temperature of
0C to + 30C in the original packaging. Store the servo actuator for a maximum of 2 years.
For storage logistics, we recommend the "first in –first out" method.
Hard knocks, because of falling or hard dropping, can damage the
servo actuator.
Only use hoisting equipment and lifting accessories with sufficient
capacity.
Never exceed the maximum permissible load for hoisting equipment.
Lower the servo actuator slowly.
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premoAssembly
5Assembly
Read the general safety instructions before beginning work (see Chapter 2.7 "General safety
instructions").
5.1Preparations
Many electronic components are sensitive to electrostatic discharge
(ESD). This particularly concerns integrated circuits (IC),
semiconductors, resistors with a tolerance of less than one percent as
well as transistors and other components such as encoders.
Observe the directives concerning ESD protection.
Pressurized air can damage the servo actuator seals.
Do not use pressurized air to clean the servo actuator.
Clean/de-grease the output shaft /output flange of the servo actuator with a clean, lint-free
cloth moistened with a suitable grease-dissolving but non-aggressive cleaning agent.
Dry all fitting surfaces to neighboring components in order to achieve the proper friction values
of the screw connections.
Check the fitting surfaces additionally for damage and impurities.
5.2 Mounting the servo actuator onto a machine
The servo actuator is compliant for every mounting position; the
lubricant quantity, however, is dependent on the mounting position.
The mounting position and the lubricant that has been filled in is
indicated on the identification plate (see Chapter 3.1 "Name plate").
Mount the servo actuator only in the specified mounting position.
Observe the safety and processing instructions for the threadlocker to be
used.
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Assemblypremo
A
B
A
B
5.2.1 Mounting premo SP line on a machine
premo SP line and premo XP line are equipped with a square flange with round through-holes for
mounting on a machine.
Alternatively premo XP line can have slotted holes, see Chapter 5.2.3 "Mounting premo XP line
with slotted holes on a machine (optional)".
Coat the fastening screws with a threadlocker
(e.g. Loctite
Fasten the servo actuator to the machine with
®
243).
the fastening screws through the throughholes (A).
Mount the servo actuator in such a way that
the name plate (B) remains legible.
Do not use any washers (e.g. plain
washers, tooth-lock washers).
For appropriate screw sizes and tightening
torques, see Chapter 9.1 "Specifications for
mounting on a machine", Tables "Tbl-11"
and "Tbl-13".
5.2.2 Mounting premo TP line on a machine
premo TP line is equipped with a circular flange with round through-holes for mounting on a
machine.
Coat the fastening screws with a threadlocker
(e.g. Loctite
Fasten the servo actuator to the machine with
®
243).
the fastening screws through the throughholes (A).
Mount the servo actuator in such a way that
the name plate (B) remains legible.
Do not use any washers (e.g. plain
washers, tooth-lock washers).
For appropriate screw sizes and tightening
torques, see Chapter 9.1 "Specifications for
mounting on a machine", Table "Tbl-12".
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premoAssembly
5.2.3 Mounting premo XP line with slotted holes on a machine (optional)
For adjusting the gearing backlash between output pinion and toothed rack / counter-wheel,
premo XP line features slotted holes and guides on the sides as an option. An additional
adjustment device is no longer necessary. The ground side surfaces can also be used as a torque
support.
A
Center the servo actuator by the ground side
surfaces in the sled.
Adjust gearing backlash between output pinion and
toothed rack / counter-wheel.
For the proper setting of the gearing backlash,
you will find further information in the "alpha
rack & pinion system" manual.
Use only the washers included with the delivery for
fastening the gearbox to the machine (see
Table "Tbl-5").
Slide the washers onto the fastening screws.
Smear threadlocker (e.g. Loctite 243) onto the
fastening screws.
Fasten the servo actuator to the machine with the
fastening screws through the slotted holes (A).
Mount the servo actuator in such a way that the
name plate remains legible.
For appropriate screw sizes and tightening
torques, see Chapter 9.1 "Specifications for
mounting on a machine", Table "Tbl-13".
Optionally, you can fixate the servo actuator to
the machine additionally with cylinder pins.
Further information can be found in section
"Pinning the mounted and aligned servo
actuator (optional)".
Size of premo XP
line
Outer diameter
[mm]
Clamping length
[mm]
Size 1Size 2Size 3
–1416
–56
Tbl-5: Dimensions of the washers
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Assemblypremo
B
Pinning the mounted and aligned servo actuator (optional)
There are bore holes (B) on the housing for pinning the servo actuator to the machine.
Drill pin holes into the machine base according
to the bores (B) of the housing.
Ream the bores to the corresponding fit size for
the cylinder pins.
For specifications on the cylinder pins, refer
to Table "Tbl-6".
Fixate the servo actuator with the cylinder pins.
Pin holes in gear housing
SizeQuantity x cylinder pin with
interior thread
DIN 7979
DIN EN ISO 8735 Form A
Size 1–
Size 22 x 6 m6
Size 32 x 8 m6
Tbl-6: Pin holes
5.3Components mounted on the output side
Distortions during assembly can damage the servo actuator.
Mount gearwheels and toothed belt pulleys onto the output shaft / output
flange without forcing.
Never attempt to assemble by force or hammering!
Only use suitable tools and devices for assembly.
The prescribed screw sizes and tightening torques for the output flange can be found in
Chapter 9.2 "Specifications for mounting on the output side", Table "Tbl-14".
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premoAssembly
5.4Installing electrical connections
Electrically live components may result in electric shocks if touched
and can cause serious injuries and even death.
Observe the five safety rules of electrical engineering before starting
electrical installation work:
-Disconnect.
-Secure against being switched on again.
-Check that there is no voltage.
-Ground and short-circuit.
-Cover neighboring and electrified parts.
Check that protective caps are on the plugs. If protective caps are
missing, check the plugs for damage and soiling.
Electric operation in moist areas may result in electric shocks and can
cause serious injuries and even death.
Carry out the electrical assembly only in dry areas.
During generator operation, voltage is induced. This can lead to lethal
current pulses.
Ensure that no plugs and connections are exposed during generator
operation.
The cables of all servo actuators need to be laid out in such a way that
a minimum bending radius of 10 x diameter is kept. Torsional load of
the cables should be avoided.
In actuators of the respective series, connectors with bayonet coupling are used. These are
connectors with an additional vibration O-ring.
-When using M23 screw counter plugs, the O-ring remains in place to protect against
loosening due to vibration on the mounting socket.
-When using counter plugs with bayonet coupling the O-ring must be removed.
-The maximum line length without disconnection points is 50 m. Observe also the maximum
permissible line lengths of the servo converter being used.
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premoStartup and operation
6Startup and operation
6.1Safety instructions and operating conditions
Read the general safety instructions before beginning work (see Chapter 2.7 "General safety
instructions").
Wearing hearing protection in the vicinity of the servo actuator is recommended.
Improper use can cause damage to the servo actuator.
Ensure that
-The ambient temperature does not drop below 0 C or exceed +40
C,
-The surface temperature on the gearbox does not exceed +90C,
-The surface temperature on the engine does not exceed +115C,
-The installation altitude is not above 1000 m NHN.
For other conditions of use, consult our Customer Service department.
Use the sensor only up to its maximum limit values, see Chapter 9.4
"Technical specifications".
Only use the servo actuator in a clean, dust-free and dry environment.
Operate the servo actuator only in the mounting position that is specified
on the identification plate.
6.2Data for the electrical startup
The specified data is intended for the electrical startup.
The servo controllers of the different manufacturers generally use an
individual annotation of the data.
If the data is disregarded, the drive and/or the servo controller may be
damaged.
Observe the listed units precisely and check their conformance with the
units of the servo controller.
If the units differ, make the necessary adjustment accordingly.
In some servo controllers, there is a dependence between the individual parameters. We would
be glad to assist you in finding the correct entries.
We provide adjusted and certified quick start guides for several servo controllers. In these
guides you will find the adapted parameter lists for the relevant servo converters.
For further information, please visit our website at http://wittenstein-alpha.de or contact our
This data reflects the technical characteristics and the limit values of the standard engines of the
premo series in general units. Possible restrictions due to the gearbox can be found in the data
sheet of your servo actuator.
Select the data for the premo version you are using.
Select the appropriate product size of the desired servo controller in regard to the application
data.
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premoMaintenance and disposal
7Maintenance and disposal
Read the general safety instructions before beginning work (see Chapter 2.7 "General safety
instructions").
The permanent magnets of the stator send a strong magnetic field,
which becomes active during the disassembling of the servo actuator.
Observe the general safety instructions (e.g. for pacemaker patients) for
working in strong magnetic fields.
7.1Maintenance work
The partial or complete disassembly of the actuator into its individual
parts for maintenance or repair work is not permissible.
In case of a malfunction or failure, please contact Customer Service.
7.1.1Refreshment of holding brake
The holding torques of the holding brakes used in the actuators are influenced by various factors,
e.g. oxidation of abraded particles, flattening of friction surfaces due to frequent application of the
brakes in the same position or air gap changes due to wear. This can lead to a tolerance in the
holding torque of - 50 % to + 100 %.
The specified holding torques apply under optimal conditions, without damaging influences. The
deterioration of the holding torque can be reduced by refreshing the brakes periodically.
For critical applications we recommend dimensioning for an adequately large holding torque to take
account of these factors. Our internal technical service would be glad to help you with the
appropriate dimensioning.
A maintenance interval of 4 weeks is recommended for common industrial applications.
For your dimensioning, observe the effective torques during running-in.
Recommended brake refreshment cycle, premo
Ordering code: PxG xxxx-xxxxxxx-xxxxXxxxx-xxx (X= S or T)
UnitPxG 1PxG 2PxG 3
Slipping speedrpm100
Duration for
sec0,5
brake
deenergized
Duration for
sec0,5
brake energized
Number of
–5
cycles
Tbl-7: Recommended brake refreshment cycle, premo
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Maintenance and disposalpremo
7.1.2Visual inspection
Check the entire servo actuator and all cables for exterior damage.
The radial shaft seals are subject to wear. Therefore, also check the servo actuator for
leakage during each visual inspection (lubricant leaks).
You can find more general information on radial shaft seals on our partner's Internet site at
http://www.simrit.de.
Check the mounting position, so that no foreign medium (e.g. oil) has collected on the
output flange.
Check whether the safety signs (see Chapter 2.8 "Safety signs") and the type plate (see
Chapter 3.1 "Name plate") are mounted and legible.
7.1.3Checking the tightening torques
Check the tightening torque of the fastening screws on the servo actuator housing and at the
output flange.
The prescribed tightening torques can be found in Chapter 9.1 "Specifications for mounting
on a machine", Tables "Tbl-11", "Tbl-12"and "Tbl-13", and in Chapter 9.2 "Specifications
for mounting on the output side", Table "Tbl-14".
If, while checking the tightening torque, you discover that a screw can be further tightened,
follow the instructions in "Remounting the screw".
Remounting the screw
Loosen the screw.
Remove the glue residue from the threaded bore and the screw.
De-grease the screw.
Coat the screw with a threadlocker (e.g. Loctite
Insert the screw and tighten it with the specified torque.
7.1.4Cleaning
Clean the servo actuator using a clean, lint-free cloth.
If necessary, use a suitable fat dissolving but non-aggressive cleaning agent.
Make sure that it is possible to remount the screw on the gearbox without
damaging the entire machine.
®
243).
Pressurized air can damage the servo actuator seals.
Do not use pressurized air to clean the servo actuator.
7.2Startup after maintenance work
Clean the outside of the servo actuator.
Attach all safety devices.
Do a trial run before releasing the servo actuator again for operation.
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premoMaintenance and disposal
7.3Maintenance schedule
Maintenance workAt startupAfter the first 500
Refreshment of
holding brake
Visual inspection
XXX
and cleaning
Checking the
XXX
tightening torques
7.4Information on the lubricant used
All servo actuators are permanently lubricated by the manufacturer with
synthetic gear oil (polyglycols) of viscosity class ISO VG100, ISO VG220 or
with a high-performance lubricant (see type plate). All bearings are
lubricated for life at the factory.
The manufacturer listed below will provide any further information on the lubricants:
operating hours or 3
months
Tbl-8: Maintenance schedule
Every 4
weeks
X
Yearly
Castrol Industrie GmbH, Mönchengladbach
7.5Disposal
Consult our Customer Service Department for supplementary information on disassembly and
disposal of the servo actuator.
Dispose of the servo actuator at the recycling sites intended for this purpose.
Observe the locally valid regulations for disposals.
Standard lubricantsLubricants for the food industry (NSF-H1
registered)
Klüber Lubrication München KG, Munich
Tel.: + 49 2161 909-30
www.castrol.com
Tbl-9: Lubricant manufacturers
Tel.: + 49 89 7876–0
www.klueber.com
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premoMalfunctions
8Malfunctions
Changed operational behavior can be an indication of existing damage
to the servo actuator, or cause damage to the servo actuator.
Do not put the servo actuator back into operation until the cause of the
malfunction has been rectified.
Rectifying of malfunctions may only be done by specially trained
technicians.
To facilitate troubleshooting and the optimization of controller settings, it is
useful to record the current over a full cycle (a servo controller function) and
make it available as a file.
FaultPossible causeSolution
Increased operating
temperature
Increased operating
noises
Loss of lubricantLubricant quantity too highWipe off discharged lubricant and
Motor does not start Power supply interruptedCheck the connections
Selected construction too
weak for task, nominal
operating exceeded.
Motor is heating the gearbox. Check the controller's settings.
Ambient temperature too
high.
Damaged bearingsConsult our Customer Service
Damaged gear teeth
Seals not tightConsult our Customer Service
Wiring of motor and / or
encoder not correct
Blown fuseCheck for errors and replace the
Check the technical specifications.
Ensure adequate cooling.
department.
continue to watch the gearbox.
Lubricant discharge should stop
after a short time.
department.
Check the wiring of the motor
phases and the motor encoder
fuse
Incorrect controller
parameters
Motor protection has been
triggered
Wrong direction of
rotation
Motor is droning and
has a high power
consumption
Revision: 024022-D045530en-24
Wrong set value
specification for the servo
controller
Drive is blockedCheck the drive
Error in the encoder lineCheck the encoder line
Incorrect controller
parameters
Brake does not release(see fault "Brake does not release")
Check that the motor parameters
are suitable for the implemented
servo actuator
Check for errors. Check whether the
motor protection setting is correct.
Check servo controller/converter.
Check the set value specifications
and the polarities
Check that the motor parameters
are suitable for the implemented
servo actuator
Page 27
Malfunctionspremo
FaultPossible causeSolution
Brake does not
release
Holding brake slipsStopping torque of the brake
Acceleration times
are not met
Position errorShielding of the encoder line
Voltage drop along the
supply line > 10%
Incorrect brake connectionCheck the connection for correct
Short circuit in the coil or at
body of brake coil
exceeded
Load is too highCheck the dimensioning
Power limiting activeCheck the controller parameters
insufficient
Disturbing pulse from the
brake, protective circuit of
the brake missing or
defective
Mechanical coupling
between the motor shaft and
encoder defective
Ensure that the supply voltage is
correct. Check the cable cross-
section.
polarity and voltage
Consult our Customer Service
department.
Check the construction plan. Carry
out a refreshment.
Inspect the shielding of the
connection cables
Check the protective circuit
(e.g. Varistor) of the brake on the
converter
Consult our Customer Service
department.
Tbl-10: Malfunctions
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premoAppendix
9Appendix
In case of questions on the special applications, please contact WITTENSTEIN alpha GmbH.
9.1Specifications for mounting on a machine
9.1.1Specifications for mounting premo SP line
Through-holes in servo actuator housing of premo SP line
SizeHole circle Ø
[mm]
Quantity x
diameter
[ ] x [mm]
Size 1684 x 5.5M5 / 12.99.0
Size 2854 x 6.6M6 / 12.915.4
Size 31204 x 9.0M8 / 12.937.3
Tbl-11: Specifications for mounting on a machine, premo SP line
9.1.2Specifications for mounting premo TP line
Through-holes in servo actuator housing of premo TP line
SizeHole circle Ø
[mm]
Quantity x
diameter
[ ] x [mm]
Size 1798 x 4.5M4 / 12.94.55
Size 21098 x 5.5M5 / 12.99.0
Size 31358 x 5.5M5 / 12.99.0
Tbl-12: Specifications for mounting on a machine, premo TP line
For screw size /
property class
For screw size /
property class
Tightening torque
[Nm]
Tightening torque
[Nm]
9.1.3Specifications for mounting premo XP line
Through-holes / slotted holes in servo actuator housing of premo XP line
SizeHole circle Ø
[mm]
Through-
Slotted holes
holes
Size 170–8 x 5.5M5 /12.99.0
Size 290958 x 6.6M6 /12.915.4
Size 31201208 x 9.0M8 /12.937.5
–:= on request
Tbl-13: Specifications for mounting on a machine, premo XP line
Quantity x
diameter
[]x [mm]
For screw size /
property class
Tightening
torque
[Nm]
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Appendixpremo
9.2Specifications for mounting on the output side
9.2.1Thread in output flange, premo TP line
Type/SizeHole circle Ø
[mm]
Quantity x Thread
x Depth
[ ] x [mm] x [mm]
Tightening torque
[Nm]
Property class 12.9
Size 131.58 x M5 x 79.0
Size 250.08 x M6 x 1015.4
Size 363.012 x M6 x 1215.4
Tbl-14: Thread in output flange, premo TP line
9.3Tightening torques for common thread sizes in general mechanical engineering
The specified tightening torques for set screws and nuts are calculated values and are based on
the following conditions:
-Calculation in accordance with VDI 2230 (February 2003 version)
-Friction value for thread and contact surfaces µ=0.10
-Utilization of the yield stress 90%
-Torque tools type II classes A and D in accordance with ISO 6789
The settings are values rounded to usual commercial scale gradations or setting possibilities.
Use the exact values in this table to set your tools.
Tbl-15: Tightening torques for set screws and nuts
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premoAppendix
9.4Technical specifications
9.4.1Motor specifications, premo 320 V
This chapter gives you the technical data of the engine being used. The complete technical data of
the servo actuators can be found in the data sheet of the actuator. The permissible output
specifications of the actuator are influenced by the gearbox and lubricant being used. We would be
glad to provide you with the data sheet, please contact us at: [email protected]
This chapter gives you the technical data of the engine being used. The complete technical data of
the servo actuators can be found in the data sheet of the actuator. The permissible output
specifications of the actuator are influenced by the gearbox and lubricant being used. We would be
glad to provide you with the data sheet, please contact us at: [email protected]
9.4.19 Technical specifications temperature sensors KTY and PT 1000
TypeKTY 84-130PT 1000
Ordering
code:
Temperature
[°C]
-300.391882.11
-200.424921.57
-100.460960.86
00.4981000
100.5381039.03
200.5811077.94
250.6031097.4
300.6261116.73
400.6721155.41
500.7221193.97
600.7731232.42
700.8261270.75
PxG xxxx-xxxxxxx-
xxKxxxxxx-xxx
Resistance, type
[kohm]
PxG xxxx-xxxxxxx-
Resistance, type
xxTxxxxxx-xxx
[Ohm]
800.8821308.97
900.9401347.07
1001.0001385.06
1101.0621422.93
1201.1271460.68
1301.1941498.32
1401.2621535.84
1501.3341573.25
1601.4071610.54
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premoAppendix
TypeKTY 84-130PT 1000
Ordering
code:
Temperature
[°C]
PxG xxxx-xxxxxxx-
xxKxxxxxx-xxx
Resistance, type
[kohm]
PxG xxxx-xxxxxxx-
xxTxxxxxx-xxx
Resistance, type
[Ohm]
1701.4821647.72
1801.5601684.78
1901.6401721.73
2001.7221758.56
Tbl-34: Technical specifications of KTY, NTC and PT 1000 temperature sensors
9.4.20 Technical specifications of PTC temperature sensor
PTC STM 160
Ordering code: PxG xxxx-xxxxxxx-xxPxxxxxx-xxx
Deactivation in case of fault
Characteristic line in accordance with DIN 44081/44082
Temperature [°C]Resistance [ohm]
< 14020 - 250
140 - 155250 - 550
155 - 165550 - 1330
165 - 1751330 - 4000
> 175> 4000
Tbl-35: Technical specifications of PTC temperature sensor
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Appendixpremo
9.4.21 Technical specifications of premo brake
The holding brake used is not a safety brake and is not suitable for
personal protection or as a service brake.
The brakes installed in the actuators work on the basis of a permanent magnetic circuit. When the
power is off, the brake pads make contact and a holding torque is built up. When the power is on
the permanent magnetic field is compensated and the friction surfaces separate without residual
torque.
The brakes used are designed as holding brakes. The intended use is in applications where no
dynamic braking procedures must be initiated by the brakes in fault/free operation.
In emergency stop situations a dynamic braking procedure could be necessary. Observe the
effective torques in the braking procedure for your dimensioning.
The reduction of kinetic energy in dynamic braking procedures increases the abrasive wear on the
brake pads, which can change the magnetic circuit within the brake. This can change opening and
closing times and can result in the brake no longer reaching the specified holding torque or no
longer closing.
For additional information about dynamic braking in emergency stop situations, please contact our
sales department.
Observe the instructions given in Chapter 7.1.1 "Refreshment of holding brake" for fault free
operation.