This operating manual describes the servo motors PMCtendo SZ. It includes information
about, transport, storage, installation, connection, commissioning, service and disposal.
Please also refer to the documentation for the servo amplifier.
1.2Further support
If you have any queries that are not covered in this document, you can find more information at www.pilz.com
1.3Modifications
No.Versi onDate Change
1002504 010
1002504 0209/2012Update: Feedback system
1002504 0303/2014•Additions:
First edition
7/2012
Motor types SZ3x and SZ8x
Type keys
Directives and standards
springtec® plug connector
Type-specific data
Characteristic safety values
•Updates:
Rating plate
Power cable
Feedback connection
External fan
Thermal winding protection
Electrical installation
Brake data, brake moment of inertia values
Number of motor poles
Formula symbols
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2 Notes on Safety
2Notes on Safety
2.1Warranty and liability
The devices can represent a source of danger. Therefore observe
•the safety guidelines, technical rules and regulations given in the following sections
•and points.
Warranty and liability claims will be void if
•the product has not been used for its intended purpose,
•the damage is attributable to a failure to observe the operation instruction,
•the operating personnel has not been properly trained, or
•modifications of any kind have been made.
2.2Component part of the product
The technical documentation is a component part of a product.
•Since the technical documentation contains important information, always keep it
handy in the vicinity of the device until the machine is disposed of.
•If the product is sold, disposed of, or rented out, always include the technical documentation with the product.
2.3Operation in accordance with its intended use
The servo motors are intended for installation in machines or systems or for assembly
with other components in a machine They must be operated in conjunction with suitable
and correctly configured servo amplifiers (e.g. PMCtendo DD4, PMCtendo DD5 or
PMCprotego D).
The thermal motor protection integrated in the motor winding must be monitored and
evaluated.
The following is deemed improper use:
•direct connection to the mains power supply,
•any component, technical or electrical modification,
•use outside the areas described in this manual,
•use outside the documented technical details.
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2 Notes on Safety
2.4Qualified personnel
Devices may cause residual risks. For this reason, all work on the devices as well as operation and disposal must only be performed by qualified personnel who are aware of the
possible dangers.
Qualified personnel are persons who have acquired the authorisation to perform these
activities by
•Training from specialists and/or
•Instruction from specialists
In addition, they must have
•read,
•understood and
•observed the applicable regulations, legal provisions, rules and standards and existing technical documentation including the safety information contained in it.
2.5Working on the machine
Apply the 5 safety rules in the order stated before working on the machine:
1. Activate. Make sure the auxiliary circuits are activated.
2. Secure against unintentional restart.
3. Make sure no voltage is present.
4. Ground and short-circuit.
5. Cover or enclose adjacent live parts.
2.6Disposal
Please comply with the latest national and regional regulations! Dispose of the individual
parts separately depending on their nature and currently valid regulations such as, for
example:
•Electronic scrap (PCBs)
•Plastic
•Sheet metal
•Copper
•Aluminum
2.7Directives and norms
The servo motors meet the following guidelines and norms
•Directive 2006/95/EC (Low Voltage Directive)
•Directive 2004/108/EC (Directive on Electromagnetic Compatibility)
•DIN EN 60204-1 version 2007
•DIN EN 60034-1 version 2011
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2 Notes on Safety
•DIN EN 60034-5 version 2007
•DIN EN 60034-6 version 1996
•DIN EN 60034-9 version 2008
•DIN EN 60034-14 version 2008
•UL and CSA approval
All motors are supplied with certifications as "Recognized Component Class 155 (F)
motor insulation system".
UL approval is registered with Underwriters Laboratories USA under UL File Number
E182088 (N), Classes OBJY2 and OBJY8, Component-Systems, Electrical Insulation. UL certification is needed mainly for the use of motors and geared motors on
the US market. But, also in many countries UL approval is considered a special mark
of quality.
2.8Presentation of notes on safety
IMPORTANT
IMPORTANT
This means that material damage may occur
if the safety precautions stated are not observed.
NOTICE!
CAUTION
This means that a minor injury may occur.
if the safety precautions stated are not observed.
WARNING!
Warning
means that there may be a serious danger of death
if the stated precautionary measures are not taken.
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2 Notes on Safety
DANGER!
Danger
means that serious danger of death exists
if the stated precautionary measures are not taken.
INFO
refers to important information about the product or serves to emphasize a
section in the documentation to which the reader should pay special attention.
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3 Description
3Description
3.1PMCtendo SZ servo motors
The PMCtendo SZ synchronous servo motors have a very short design achieved thanks
to an optimized winding technology. This feature makes it possible to manufacture the
stator windings with the highest possible copper fill factor. With this technology and further optimizations in the mechanical parts it has been possible to shorten the length of
the motor by almost half without reducing the power output.
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3 Description
3.1.1Type label
DescriptionValue in exampleMeaning
Year of
YOM 2014Year of manufacturing 2014
Manufacturing
TypePMCtendo SZ.31/0/1/2/7/K/H/60/00 Order references
SN7008874/001/000/010/00Serial number
Ident.No.xxxxxxxIdentification number
M
0,95 NmStandstill torque: Constant standstill torque for
0
250 min
M
0,89 NmRated torque; highest constant torque of the motor for
N
a rated speed n
I
2,02 AStandstill current: I
0eff
I
1,93 ARated current: Constant current at MN ± 5 % and
N
n
K
40 V/1000 rpmEMC voltage stability: Peak value of the chained, in-
E M
± 5 %
N
-1
± 5 %
± 5 %
N
is the current flowing at M0
0eff
duced voltage for an operating voltage (∆T = 100 K)
when idle running as generator
K
1,35 Nm/ATorque constant: Constant in the entire functional
M ,N
range of a motor
n6000 rpmRated speed n
N
Insul.-classFThermal class acc. to EN 60034/VDE 0530
IP56Protection class
th.prot.PTC thermistor 145 °CThermal winding protection by PTC drilling
PMCtendo SZ8x8xExternal fan (not applicable for SZ.3x)F
3 Brake and dynamic designCode
Without brake and dynamic design0
With brake and dynamic design1400 V (UZK = 540 V)H
Without brake, with increased mass moment 2
of inertia
(not applicable for SZ.3x, SZ.51, SZ.71)2000 min
With brake, with increased mass moment 33000 min
of inertia 4500 min
(not applicable for SZ.3x, SZ.51, SZ.71)6000 min
4 FeedbackCode10 OptionCode
Single-turn EnDat® 2.2 ECI1118-G2 1Standard00
inductive
Multi-turn EnDat® 2.2 EQN1135 optical2
7 CoolingCode
Water cooling (not applicable for SZ.3x)W
8 VoltageCode
9 Speed a) Code
-1
20
-1
30
-1
45
-1
60
a) See section Type-specific data
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3 Description
3.2Drive controller
The servo motors must be operated in conjunction with a servo amplifier with speed,
torque or position control, e.g. PMCtendo DD4, PMCtendo DD5 or PMCprotego D.
Servo motors, cables and servo amplifiers should always be regarded as one cohesive
system. The most important selection criteria are:
•Constant standstill torque M
•Constant standstill current I
•Rated speed n
•Mass moment of inertia of motor and load J [kgcm
•Effective torque (calculated) M
•Regenerative energy in braking mode
•Overload capacity
•EMC
[min-1]
N
[Nm]
0
0 eff
[A]
eff
[Nm]
2
]
When selecting the servo amplifier, please consider both the static and the dynamic load
(acceleration/ braking).
3.3Feedback
PMCtendo SZ motors may be fitted with the following feedback systems:
•Single-turn EnDat
•Multi-turn EnDat
Single-turn feedback systems provide an absolute position within one revolution while
multi-turn feedback systems specify an absolute position over a number of revolutions.
®
2.2 ECI1118-G2 inductive,
®
2.2 EQN1135 optical.
3.4Dynamic performance
The PMCtendo SZ motors are designed as standard for applications with high dynamic
performance, i.e. they have the lowest possible mass moment of inertia. As an option the
servo motors can be supplied with an increased mass moment of inertia in order to optimize the inertia ratio between motor and load.
3.5Operating mode
The servo motors are designed for continuous operation. This corresponds to operating
mode S1 (in accordance with DIN EN 60 034-1).
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3 Description
3.6Thermal winding protection
The servo motors have a thermal winding protection, which protects the stator winding
from damage in the case of constant overload.
The PMCtendo SZ motors are fitted with PTC drilling as standard. If the motor temperature reaches a critical level, the ohmic resistance of the PTC resistors increases abruptly
and this indicates motor overload.
INFO
Each thermal winding protection must be monitored and evaluated by the
servo amplifier or an external triggering device.
3.7Cooling
As standard the servo motors are dimensioned for convection cooling.
In order to increase the continuous torque output or continuous power output, the servo
motors can be fitted as an option with external fan systems (IP44). External fan systems
can be retrofitted.
In applications requiring a higher protection class than IP44 or a lower noise level, the
servo motors can be water-cooled in the A-side flange.
3.8Holding brake
WARNING!
Danger to life!
The motor brake is not a safety brake!
Check whether additional safety measures must be taken, e. g. when remaining un-
der suspended loads.
3.8.1Motor holding brake
The servo motors may be supplied with a built-in permanent magnet brake for backlashfree holding of the motor shaft. This blocks the rotor when the supply voltage is switched
off. The brake has electromechanical ventilation: The applied voltage generates a magnetic field that counteracts the permanent magnetic field and neutralises its influence.
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3 Description
As the servo motors can be quickly and actively braked by appropriate setpoint settings
at the servo amplifier, the built-in brakes function as a holding brake. Additional brakes
must be provided for braking when the motor is turning, e.g. for an emergency stop.
3.8.2Brake test and grinding
If a brake does not perform any friction work over an extended period of time, its friction
factor may change due to accumulations of flash rust or vapors resulting from high motor
temperatures. It is also possible that a slight material distortion may be noted as the result of major temperature fluctuations.
To ensure the functional safety of brakes, including the case of gravity-loaded vertical axes, the brakes must be subjected to brake tests at regular intervals.
Testing brakes
Load the brake with 1.3 times the load torque. Make certain that the suspended load of
a vertical axis is already exerting torque on the motor when it is at a standstill.
Regrind the brake
If the tested braking torque differs from the required value, a brake can be reground.
To do this, run the motor at maximum 20 rpm.
Release and close the brake once per second so that the motor is required to work
against the closed brake for about 0.7 seconds.
Repeat these steps in the reverse direction of rotation after about 20 cycles. If the nominal holding torque of the brake is still not correct after this regrinding, repeat the entire
process. If the nominal holding torque of the brake has still not been reestablished after
grinding five times, check for other factors that could be responsible for the deviating
nominal holding torque of the brake, for example if the wear limit has been reached.
Depending on the relevant servo inverter types, the grinding routine can also be automated. For further details see the corresponding documentation.
3.9Motor shaft and bearings
The servo motors have a smooth shaft end (DIN 6885) on the drive side. With a friction
connection, torque transfer must be achieved through surface pressure. This guarantees
a safe, backlash-free force transfer.
The bearings are designed as ball bearings with permanent lubrication and non-contact
seals.
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4 Transportation and storage
4Transportation and storage
4.1Transportation
Secure the shafts and bearings of the servo motor against impact when transporting. Use
eye bolts (if provided) and suitable slings when transporting the servo motor. Only lift the
servo motor at the eye bolts without additional attachments. Never transport the servo
motor on the fan guards or the angular flange sockets.
4.2Storage
Store the servo motors in enclosed, dry spaces. Storage on the fan guards is not permitted.
If the servo motors are protected from all harmful environmental influences, brief storage
in open-air spaces with roofing is permitted.
Make sure that no condensation forms during storage, e.g. because of extreme temperature fluctuations with a high level of humidity.
Protect the motor shaft from corrosion when storing over an extended period. Note that
the insulation resistance of the winding must be checked after storing over an extended
period.
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5 Installation
5Installation
WARNING!
Electric shock hazard!
Risk of serious injury from contact with live parts!
Observe the 5 safety rules (see chapter 2.5 Working on the machine).
Disconnect the motor from the power supply before carrying out work!
Ensure that the motor shaft is at a standstill before carrying out work! A rotating rotor
can generate high voltages at the terminals.
Switch off the power supplies to all connected devices and devices to be connected.
Note that dangerously high voltages can still occur at the servo amplifier even 10
minutes after switching off the power supply due to the residual charge of the DC link
capacitors.
Cover all open electrical connections, e.g with protective caps.
Cordon off the installation area according to the safety regulations, e.g. with barriers,
warning signs.
WARNING!
Burns!
The surface temperature of the servo motor can exceed 65 °C during operation!
Safety measures should be put in place to protect against contact during operation,
whether accidental or intentional.
5.1Installation Location
The following preconditions apply for the installation location:
•The installation location must be free from aggressive substances and electrically
conductive atmospheres.
•The substructure must be level, vibration-free and torsionally rigid.
•Ensure adequate heat dissipation. Ensure compliance with the admissible ambient
temperature. If necessary, cool the servo motor additionally, e.g. using an external
fan.
•Observe the minimum clearance to the air intake of an external fan.
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5 Installation
Motor External fan Minimum distance x
SZ.4xFL420
SZ.5xFL520
SZ.7xFL730
SZ.8xFL830
The following installation positions are admissible:
Admissible installation positions
IM B5IM V1IM V3
Particularly in installation position IM V3, ensure that no liquids from attachments can run
into the motor bearings.
Fmin
[mm]
5.2Install motor
IMPORTANT
Material damage!
Impact and other forces can cause damage to the bearings, feedback system and motor
shaft.
Do not hit the motor shaft or motor housing with a hammer or other tools.
Do not apply any pressure, impact or high acceleration to the motor.
Use backlash-free, frictionally engaged chucks or clutches.
Always use the tightening thread provided in the motor shaft to fit or remove clutches,
gears or belt pulleys. Use suitable tools!
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5 Installation
Material damage!
Solvent damages the sealing lips of the shaft seal rings.
Make sure that solvent can not come into contact with the sealing lips of the shaft
Prepare the motor for installation
•Check the motor for transport damage. Never install a servo motor that shows clear
•Check the insulation resistance of the winding of the motor after storage.
•Thoroughly remove anti-corrosion agents and/or contamination on the motor shaft.
•If possible, warm up the drive elements, e.g. belt pulley
•Make sure that the paintwork of the servo motors is not damaged.
IMPORTANT
seal rings.
signs of damage!
This can be done using a standard solvent. Make sure that the solvent can not come
into contact with the sealing lips of the shaft seal rings, otherwise materials may be
damaged.
Install motor
•Align the clutch correctly. Misalignment can cause undue vibration and can damage
the ball bearings and clutch!
•Mechanical overdefinition of the motor shaft bearing should be avoided. A rigid clutch
and/or an external additional bearing (e.g. in the gear unit) can cause excess mechanical stress on the motor shaft.
•Prevent temperature-sensitive components coming into contact with the motor.
During operation, the surface temperature of the servo motor can exceed 65 °C!
•When removing the eye bolts after installation, permanently close the threaded hole
according to the protection class of the motor.
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6 Electrical installation
6Electrical installation
WARNING!
Electric shock hazard!
Risk of serious injury from contact with live parts!
Observe the 5 safety rules (see chapter 2.5 Working on the machine).
Disconnect the motor from the power supply before carrying out work!
Ensure that the motor shaft is at a standstill before carrying out work! A rotating rotor
can generate high voltages at the terminals.
Switch off the power supplies to all connected devices and devices to be connected.
Note that dangerously high voltages can still occur at the servo amplifier even 10
minutes after switching off the power supply due to the residual charge of the DC link
capacitors.
Cover all open electrical connections, e.g with protective caps.
Cordon off the installation area according to the safety regulations, e.g. with barriers,
warning signs.
WARNING!
Uncontrolled movements of the servo motor can result in injury!
Incorrect wiring of the servo motor and/or feedback unit can trigger uncontrolled movements and result in material damage and/or personal injury.
All work must be carried out by specialists.
Observe the specifications in this operating manual and in the documentation of the
servo amplifier used.
Observe the applicable regulations.
6.1General information
6.1.1Wiring
Observe the regulations applicable for your machine or system when installing the electrical equipment, e.g. DIN IEC 60364 or DIN EN 50110.
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6 Electrical installation
6.1.2Earthing, shielding and EMC
Note the following points:
•On the servo motors, the connection to PE is established via the supply voltage cable
(see section 6.2 Servo motor and motor brake). For an additional earth in accordance
with DIN EN 60204-1, the motors have an earth connection attached and indicated
on the exterior.
•If necessary, use a toroidal core for the supply voltage cable, or a motor throttle close
to the servo amplifier. Please refer to the information stated in the operating manual
of the servo amplifier you are using.
•You will need shielded cable for data and control lines.
–Earth the inner and outer cable shield connections on both sides (e.g. on a bus
bar).
•You will need shielded cable for data and control lines.
–Earth the outer cable shield connection on both sides (e.g. on a bus bar).
–Earth the inner cable shield on the side of the servo amplifier (e.g. on a bus bar).
–If you are using longer cables and there is the possibility of transient currents,
these can be prevented by using equipotential bonding cables.
•Shields should be connected over a wide surface area (low impedance), using metallised connector housings or EMC-compliant cable screw connections.
•An appropriate connection material should be used to connect the cable shield to the
earth bar or bus bar (e.g. shielded terminals, see Fig. 6-1: ).
Fig. 6-1: Cable shield connection using a shielded terminal on the earth bar (reproduced
with permission from icotek GmbH, www.icotek.de)
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6 Electrical installation
6.1.3Selecting the cables
Note that motor, cables and servo amplifier each have electrical properties which influence one another. If not properly balanced, this can lead to inadmissibly high voltage
peaks at motor and servo amplifier.
Please note also the following points:
•Select the lead cross-sections according to the admissible continuous open-circuit
current of the motor. Observe also the documentation on the servo amplifier.
•If necessary, pay attention also to the trailability and torsional strength of the leads.
•The leads are connected to the servo motor by plug connectors. Cables are available
as accessories.
•For the choice of the cable cross-sections, see chapter 6.2 Servo motor and motor
brake.
•When using a motor brake, pay attention to the drop in the supply voltage on the lead.
•Observe the statutory regulations on EMC.
6.1.4speedtec® and springtec® plug connector
The servo motors are fitted with speedtec angular flange sockets. A cable with a speed-
®
tec
plug connector is connected as follows.
Requirement: You have removed the protection caps from the angular flange sockets.
Connect the cable to the speedtec
1Align the union nut so that the arrow faces the union nut and angular sock-
et:
®
plug connector
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6 Electrical installation
2Attach the union nut evenly on the angular socket:
3Turn the screw cap of the union nut in the direction of "close" up to the limit
stop:
Connect the cable with springtec® plug connector
1Align the respective union nuts of the green encoder plug and the orange
power connector so that the points on the union nuts and the angle connection socket are facing each other:
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6 Electrical installation
2Connect the union nuts directly onto the angle connection socket:
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6 Electrical installation
6.2Servo motor and motor brake
6.2.1Power cable
PMCtendo SZ servo motors will be connected to the drive controllers via the following
power cables (the colour specifications apply to the connection strands and are only relevant for the motor wiring).
Power cable – connector size con.15
Angular flange socket – motor PinSignalColour
A1U1BK
B1V1BU
C1W1RD
1
2
31BR+ (brake + 24 V
41BR– (brake 0 V)BK
PEGNYE
HousingShield
Power cable – connector size con.23
Angular flange socket – motor PinSignalColour
A1BR+ (brake + 24 V
B1BR– (brake 0 V)BK
C
D
11U1BK
31W1RD
41V1BU
PEGNYE
)RD
DC
)RD
DC
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6 Electrical installation
Power cable – connector sizes con.40, con.58
Angular flange socket – motor PinSignalColour
U1U1BK
V1V1BU
W1W1RD
+1BR+ (brake + 24 VDC)RD
–1BR– (brake 0 V)BK
1
2
PEGNYE
HousingShield
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6 Electrical installation
6.2.2Assignment: Motor and power cable
Assignment of connector size and minimum cross-section of power cores.
INFO
Note that the following assignment of the connector size to the minimum
cross-section ø
nN = 2000 min-1 nN = 3000 min-1 nN = 4500 min-1 nN = 6000 min-1
Motor
Connec-
tor size
ø
min
[mm2]
Connec-
tor size
ø
min
[mm2]
Connec-
tor size
ø
min
[mm2]
Connec-
tor size
ø
min
[mm2]
SZ.41——con.231,5——con.231,5
SZ.42——con.231,5——con.231,5
SZ.44——con.231,5——con.231,5
SZ.51——con.231,5——con.231,5
SZ.52——con.231,5——con.231,5
SZ.53——con.231,5——con.232,5
SZ.55——con.231,5con.232,5——
SZ.71——con.231,5——con.231,5
SZ.72——con.231,5——con.234,0
SZ.73——con.232,5con.234,0——
SZ.75——con.404,0con.406,0——
SZ.82——con.406,0con.4010,0——
SZ.83——con.4010,0————
SZ.85con.5816,0——————
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6 Electrical installation
6.3Feedback
PMCtendo SZ servo motors will be connected to the feedback systems single-turn/multiturn EnDat® 2.2 optical/inductive via the following feedback cables (the colour specifications apply to the connection strands and are only relevant for the motor wiring).
Feedback cable – plug connector con.15
Angular flanged socket - motorPinSignalColour
1CLOCKVT
2
3
4PTC– WH
5DATA/PK
6DATA GY
7
8CLOCK/YE
9
100 VWHGN
11PTC+BK
120 VBNGN
HousingShield
Feedback cable – plug connector con.23
Angular flanged socket - motorPinSignalColour
1CLOCKVT
2
3
4PTC– WH
5DATA/PK
6DATA GY
7
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8CLOCK/YE
9
100 V WHGN
11PTC+BK
12Up BNGN
HousingShield
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6 Electrical installation
A
A
1
2
3
6.4External fan
The following plug connection for connecting the external fan is included with delivery.
PinSignal
1L1
2N
3—
PE
6.5Water cooling
Connect the water cooling to the hose connectors G1/8" (fittings). Connection is possible
on the connector side or opposite.
Observe the specifications for the cooling circuit, see section 9.4.3 Water cooling.
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7 Commissioning
7Commissioning
7.1Check installation
WARNING!
Electric shock hazard!
Risk of serious injury from contact with live parts!
Observe the 5 safety rules (see chapter 2.5 Working on the machine).
Disconnect the motor from the power supply before carrying out work!
Ensure that the motor shaft is at a standstill before carrying out work! A rotating rotor
can generate high voltages at the terminals.
Switch off the power supplies to all connected devices and devices to be connected.
Note that dangerously high voltages can still occur at the servo amplifier even 10
minutes after switching off the power supply due to the residual charge of the DC link
capacitors.
Cover all open electrical connections, e.g with protective caps.
Cordon off the installation area according to the safety regulations, e.g. with barriers,
warning signs.
Installation
Check the installation and alignment of the servo motor.
Check the drive elements (clutch, gears, belt pulley)
for secure mechanical fitting and correct setting.
Check whether the motor surface is protected against
contact, whether accidental or intentional.
Check that contact with temperature-sensitive parts on
the motor has been prevented.
Check that the rotor of the servo motor can turn freely. If a motor brake is provided, this must be ventilated be-
—
—
Note:
Risk of burns or fire!
The surface temperature of the servo motor can exceed 65 °C during operation!
fore the test. Observe the polarity of the connections
when doing this!
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7 Commissioning
7.2Check connection
WARNING!
Electric shock hazard!
Risk of serious injury from contact with live parts!
Observe the 5 safety rules (see chapter 2.5 Working on the machine).
Disconnect the motor from the power supply before carrying out work!
Ensure that the motor shaft is at a standstill before carrying out work! A rotating rotor
can generate high voltages at the terminals.
Switch off the power supplies to all connected devices and devices to be connected.
Note that dangerously high voltages can still occur at the servo amplifier even 10
minutes after switching off the power supply due to the residual charge of the DC link
capacitors.
Cover all open electrical connections, e.g with protective caps.
Cordon off the installation area according to the safety regulations, e.g. with barriers,
warning signs.
WARNING!
Risk of injury from moving parts!
Make sure that
no persons are at risk due to start-up.
all protective and safety equipment is properly installed, even during commissioning
and test operation.
components attached to the drive are adequately protected against centrifugal forces
(e.g. feather keys, clutch elements, etc.).
Connection
Check that the earth has been properly connected.
Check that all live parts are safely protected against
contact, whether accidental or intentional.
Check the wiring and the connections of the servo motor, feedback, servo amplifier and, if provided, external
fan and motor brake.
Check the direction of rotation of the servo motor.Control the servo motor using the servo amplifier.
—
Please refer to the documentation for the servo amplifier.
Check the function of the motor brake. Apply the control voltage to the motor brake (ensure
correct polarity): The motor brake must release.
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7 Commissioning
7.3Put into operation
WARNING!
Uncontrolled movements of the servo motor can result in injury!
Incorrect wiring of the servo motor and/or feedback unit can trigger uncontrolled movements and result in material damage and/or personal injury.
All work must be carried out by specialists.
Observe the specifications in this operating manual and in the documentation of the
servo amplifier used.
Observe the applicable regulations.
Carry out commissioning only when the following preconditions are satisfied:
•The tests in chapters 7.1 Check installation and 7.2 Check connection have been
carried out.
•All other specific and necessary tests for your system have been carried out.
Note during commissioning:
•Be sure to following the instructions for commissioning of the servo amplifier used.
•On multi-axis systems, commission each drive individually.
Tips on troubleshooting
The following table lists typical faults that can affect the servo motor during commissioning. Further sources of faults can be:
•The servo amplifier
•A higher-level controller
•Integration of the motor into a multi-axis system
Take care therefore to also observe the respective documentation!
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7 Commissioning
FaultPossible cause of faultMeasure
Motor shaft not
rotating
Servo amplifier not enabled•Connect enable signal for the servo
amplifier
Reference value cable interrupted•Check reference value cable
Motor phases incorrectly connected (rotary field incorrect)
Motor brake not released•Check brake controller
Drive is blocked mechanically•Check mechanical parts
Torque too low•Check current limit in the servo ampli-
•Connect motor phases correctly
•Check voltage supply to the motor
brake
fier
•Install stronger motor or servo amplifier
Motor shaft rotates
uncontrolled (positive
feedback)
Motor oscillatesScreen of feedback cable interrupted•Reconnect screen of feedback cable
Motor temperature
fault signalled (at servo amplifier)
Motor brake does not
engage
Wrong feedback offset•Check feedback offset and correct, if
necessary
Motor phases incorrectly connected (reversed cycle, rotary field correct)
Control parameters incorrect•Correct control parameters in servo
Motor cable has short-circuit or earth fault •Replace cable
Motor has short-circuit or earth fault•Replace motor
Feedback plug is not correctly connected •Check plug connectors
Feedback cable is interrupted, pinched,
etc.
Connection to motor thermal protection interrupted
Motor thermal protection has tripped•Check thermal situation at installation
Demanded holding torque too high•Check dimensioning of the motor
•Reverse direction of rotation in servo
amplifier
•Connect motor phases correctly
interrupted
•Replace cable, if necessary
amplifier
•Inspect cable
•Check plug connectors
•Check leads
location
•Use external fan, if necessary
brake
Motor brake defective•Replace motor
Motor shaft with axial overload•Check axial load and reduce, if neces-
Operating Manual PMCtendo SZ
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sary; also replace motor because the
bearings are damaged
35
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8 Service
8Service
Electric shock hazard!
Risk of serious injury from contact with live parts!
Observe the 5 safety rules (see chapter 2.5 Working on the machine).
Disconnect the motor from the power supply before carrying out work!
Ensure that the motor shaft is at a standstill before carrying out work! A rotating rotor
can generate high voltages at the terminals.
Switch off the power supplies to all connected devices and devices to be connected.
Note that dangerously high voltages can still occur at the servo amplifier even 10
minutes after switching off the power supply due to the residual charge of the DC link
capacitors.
WARNING!
Cover all open electrical connections, e.g with protective caps.
Cordon off the installation area according to the safety regulations, e.g. with barriers,
warning signs.
INFO
Note that repairs must only be carried out by Pilz GmbH & Co. KG. If the servo motor is opened without authorisation and handled improperly, the warranty will be rendered invalid.
8.1Maintenance
If properly installed, the servo motors are more or less maintenance-free. As the operating conditions can differ widely, the maintenance intervals must be adapted to the conditions at the operating site (e.g. degree of soiling, cyclic duration factor, load).
Maintenance intervalWhat is to be done?What has to be observed?
At regular intervalsClean servo motorAdapt the cleaning intervals to the de-
gree of soiling on site. Note that the original paintwork must be retained at all
costs:
•Allow the motor to cool down
•Do not use solvents
•Select the cleaning method according to the protection class of the servo motor
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8 Service
Maintenance intervalWhat is to be done?What has to be observed?
Every 500 operating
hours or
at least every 3 months
Check electrical and mechanical connections and retighten, if necessary
Check the smoothness of running of the
servo motor and check the installation;
replace the servo motor, if necessary
Check the ball bearings for noises; in the
event of a deterioration, send in the servo
motor for replacement of the ball bearings, if necessary
8.2In the event of disruptions
—
See 8.3 Replace motor
Note that the ball bearings may only be
replaced by Pilz GmbH & Co. KG!
Increase the awareness of all persons who work on the machine or motor (machine operators, machine users, service personnel, etc.) for changes to normal operation. The following features indicate that the function of the machine has been affected. These
include:
•higher power consumption, temperatures or degree of vibration
•unusual noises or odours
•(frequent) response from monitoring equipment
In this case, stop the machine and inform a responsible qualified person immediately.
Check which safety measures for remaining in the transport area of a motor, e.g. in the
machine/system, particularly under a suspended load, have to be taken.
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8 Service
8.3Replace motor
IMPORTANT
Material damage!
Impact and other forces can cause damage to the bearings, feedback system and motor
shaft.
Do not hit the motor shaft or motor housing with a hammer or other tools.
Do not apply any pressure, impact or high acceleration to the motor.
Use backlash-free, frictionally engaged chucks or clutches.
Always use the tightening thread provided in the motor shaft to fit or remove clutches,
gears or belt pulleys. Use suitable tools!
Please note the following when changing the motor:
•If servo motors with a motor brake have been in storage for longer than 2 years, the
motor brake must be resurfaced before the servo motor is used.
•Check the insulation resistance of the winding of the motor after storing over an extended period.
•Please refer to the information in 5 Installation.
•Once the unit has been exchanged, restore the reference to the machine coordinate
system.
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9 Technical data
9Technical data
9.1Ambient conditions
Ambient conditionsStandardOptional
Protection classIP56 IP66
Transport/
storage ambient conditions
Ambient temperature during operation -15°C to +40°C—
Thermal classF
-30°C to +85°C—
—
(Limit temperature 155°C, warming ∆T = 100 K in accordance
with DIN EN 60034/VDE 0530)
CoolingIC 410 Convection cooling•IC 416 Convection cooling by
external fan (IP 44)
•Water cooling in A-side
flange
Installation height≤ 1000 m above sea level—
Vibration level A according to DIN 60034-14:
2008-03
Maximum vibrating load for quasi-sinusoidal movements up to 1 kHz
5 g
Note that built-in brakes can no
longer fully establish their holding torque due to vibration loads
B according to DIN 60034-14:
2008-03
—
9.2Device Features
Device featuresStandard
ModelIM B5, IM V1, IM V3
SurfaceMatt black in accordance with RAL 9005
BearingsBall bearings with permanent lubrication and non-contact seal
Service life > 20 000 h
SealRadial shaft seal rings A-side
Shaft endSmooth shaft, diameter quality k6
True running accuracy toleranceN in accordance with DIN 42955
Coaxiality toleranceN in accordance with DIN 42955
Axial run-outN in accordance with DIN 42955
Noise levelLimit values in accordance with EN 60034-9
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9 Technical data
9.3Electrical Data
standard
Servo amplifier DC link connection540 V
WindingThree-phase, single-tooth design;
Star configuration, center is not led out
Current consumptionSee section 9.9 Type-specific data
Current waveformSinusoidal
Protection classI (protective grounding)
Insulation classF as per EN 60034/VDE 0530
9.4Cooling
9.4.1Convection cooling
Standard Optional
PMCtendo SZIC 410 Convection cooling•IC 416 Convection cooling by
external fan (IP 44)
•Water cooling in A-side
flange
9.4.2External fan
FL4FL5FL7FL8
Motor SZ.4xSZ.5xSZ.7xSZ.8x
U
230 V, -10% to +6%, 50/60 Hz230 V, ±10 %,
N
50/60 Hz
I
[A]0.070.10.10.2
N
P
[W]10141426
N
Q
[m3/h]59160160420
N
G [dBA]41454554
m [kg]1.41.92.95.0
x
[mm]20203030
F min
Protection classIP 44
Maximum ambient temperature60°C
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9 Technical data
9.4.3Water cooling
Mechanical connection
Inlet and outlet
Ambient temperature during operation +5°C to +40°C
Storage ambient temperature-30°C to +85°C, the coolant must be drained for temperatures be-
Coolant temperature at inlet+10°C to +35°C, max. 5 K smaller than ambient temperature
Winding excess temperature100 K
Cooling circuit typeClosed with heat exchanger,
Maximum operating pressure3.5 bar
CoolantClear, aerosol-free and free of dirt (provide particle filter if neces-
pH value6,5–7,5
Hardness8–14 dH°
Salt contentDesalinated and demineralised, NaCl < 100 ppm
Number of permissible stops if conditions deviate.
S
W
J
1
B,R/B
tot
Maximum permissible number of stops if conditions deviate
Friction work per braking:
Total mass moment of inertia [kgm2]
Note section 9.9.1 Inertia.
J
motor
J
brake
nSpeed [min
Mass moment of inertia – motor
Mass moment of inertia – brake
-1
]
M
B
M
L
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1002405-EN-03
Braking torque [Nm]
Load torque [Nm]
44
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9 Technical data
t
dec
266t1
nJ
tot
955M
B
-------------------------+=
Stop time
t
dec
Stop time [ms]
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9 Technical data
9.7Thermal winding protection
Technical data for PTC drilling
max. operating voltage 7.5 VDC
Cold resistance R
Nominal response temperature
(NRT)
Resistance for NRT R
Thermal classF
25°C
≥ 3990 Ω
145°C
≤ 750 Ω
145°C ± 5 K
(Limit temperature 155°C, warming ∆T =
100 K in accordance with DIN EN 60034/
VDE 0530)
Thermal response time< 5 s
Characteristic line of the individual PTC resistor
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9 Technical data
D
total
DhD
T
=
M
zul
D
totalMN
=
9.8Derating
When dimensioning the drive, observe the derating for:
•An installation altitude above 1000 m (factor D
•An ambient temperature other than 40°C (factor D
The total derating is calculated as follows:
)
h
)
T
The admissible torque M
9.8.1Installation altitude
can be calculated from D
perm.
total
:
Operating Manual PMCtendo SZ
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Example
The drive is to be installed at an altitude of 1500 m above sea level.
According to the diagram, the admissible torque is approx. 95% of the rated torque M
at this altitude. Hence D
= 0.95.
h
N
47
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9 Technical data
9.8.2Ambient temperature
IMPORTANT
Motor damage caused by exceeding the admissible ambient temperatures for servo motors with external fan!
Note that servo motors with external fan have to be operated at ambient temperatures
up to max. +60°C.
IMPORTANT
Motor damage caused operating outside the admissible ambient temperature
range for water-cooled servo motors!
Note that water-cooled servo motors have to be operated at ambient temperatures from
+5°C to +40°C.
Example
The drive should be operated at an ambient temperature of 50°C. According to the diagram, the admissible torque is approx. 91% of the rated torque M
perature. We thus have a factor D
Operating Manual PMCtendo SZ
1002405-EN-03
= 0.91.
T
at this ambient tem-
N
48
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9 Technical data
9.9Type-specific data
IMPORTANT
Overheating!
Repainting the motor changes the thermal properties. The motor can not be operated
with the nominal data.
Retain the paint of the motor (matt black in accordance with RAL 9005).
The technical data apply to energy-optimized servo amplifier settings and were determined under the following thermal mounting conditions:
•Mounting of motor with steel bracket on baseplate.
•Minimum mounting surface area between motor and steel bracket, and between
steel bracket and baseplate according to the following table:
Motor Mounting area
between motor flange and
steel bracket
S B H [mm][m2]
SZ.3x20 210 2850,03
SZ.4x20 210 2850,03
SZ.5x25 210 2850,03
SZ.7x25 285 2850,03
SZ.8x25 285 2850,03
Ensure that comparable thermal mounting conditions exist in your system!
CAD data can be found on the Internet at www.pilz.com or are available on request.
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9 Technical data
Dimensioned drawing SZ motors, water cooled (SZ.xx/.../W/...)
SZ.4, SZ.7, SZ.8
SZ.5
Further dimensions, see dimensioned drawing SZ motors IC410, convection-cooled.
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9 Technical data
Motorw3z7
SZ.414912,5
SZ.424912,5
SZ.444912,5
SZ.5170,510,5
SZ.5270,510,5
SZ.5370,510,5
SZ.5570,510,5
SZ.7172,510,5
SZ.7272,510,5
SZ.7372,510,5
SZ.7572,510,5
SZ.829515
SZ.839515
SZ.859515
CAD data can be found on the Internet at www.pilz.com or are available on request.
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9 Technical data
9.9.1Inertia
INFO
Note that servo motors are not delivered with increased mass moment of inertia in the standard configuration. It is only available optionally (see section
3.4 Dynamic performance).
MotorJ
SZ.310,19—
SZ.330,4—
SZ.410,930,20,192
SZ.421,630,4
SZ.442,980,8
SZ.512,9—
SZ.525,21,1
SZ.537,582
SZ.5512,24,1
SZ.718,5—
SZ.7213,74,4
SZ.7321,66,3
SZ.753413,6
motor
∆J motors with
increased mass moment of
inertia
10-4kgm
∆J motors with
motor brake (= J
2
0,186SZ.320,29—
0,566
0,571
1,721
1,743
5,68
brake
)
SZ.825814,9
SZ.8383,522,3
SZ.8513337,255,46
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16,46
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Operating Manual PMCtendo SZ
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9 Technical data
9.9.2Weight
Motor ... with convection
cooling (IC 410)
mmm∆m∆m
SZ.311,5———
SZ.332,6———
SZ.4145,440,080,76
SZ.425,16,55,10,15
SZ.447,28,67,20,31
SZ.51575—
SZ.526,58,56,50,22
SZ.5381080,43
SZ.5510,912,910,90,87
SZ.718,311,28,3—
SZ.7210,813,710,80,41
SZ.7312,815,712,80,81
SZ.7518,321,218,31,6
SZ.8226,631,626,61,3
SZ.8332,737,732,71,9
... with externally ventilation (IC 416)
... with water cooling...with increased inertia ... with motor bake
[kg]
0,55SZ.322,1———
0,97
1,19
1,62
1,94
2,81
5,4
63
SZ.8545,850,846,83,28,4
Page 64
9 Technical data
9.9.3Permitted shaft load
The following values specified for the permitted shaft loads (F
2ax
, F
2radN
, M
2k,N
•for shaft dimensions according to catalogue and
•drive speeds n
The values specified for F
≤ 100 min-1.
2
2radN
refer to a load applied to the middle of the drive shaft: x2
= l/2.
For EMERGENCY STOP operation (max. 1000 load changes), the values for F
F
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represented by our subsidiaries
and sales partners.
Please refer to our homepage
for further details or contact our
headquarters.
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®
, Pilz
®
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®
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®
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®
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®
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®
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®
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®
, PVIS
®
, SafetyBUS p
®
, SafetyEYE
®
, SafetyNET p
®
, the spirit of safety
®
are registered and protected trademarks
of Pilz GmbH & Co. KG in some countries. We would point out that product features may vary from the details stated in this document, depending on the status at the time of publication and the scope
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