Siemens 1PH728 User manual

Three-phase induction motor
AC COMPACT DRIVES
Operating Instructions Edition 12.2002
1PH728.
Order number: A5E00177602A

The reproduction, transmission or use of this document or its
contents is not permitted without express written authority.
Offenders will be liable for damages. All rights, including rights
created by patent grant or registration or a utility model or
design, are reserved.
Exclusion of Liability
We have conscientiously checked the contents of this manual
to ensure that they coincide with the hardware and software
described. Since deviations cannot be precluded entirely, we
cannot guarantee complete conformance. However, the data
in this manual is reviewed regularly and any necessary
corrections included in subsequent editions.
For reasons of clarity, this manual does not contain all
detailed information and cannot consider every conceivable
application either.
We are thankful for any recommendations or suggestions. If
you should require further information, or if particular
problems should arise that are not dealt with in sufficient detail
in the operating instructions, you can request the necessary
information via your local Siemens branch office.
© 2002 All rights reserved We reserve the right to make technical changes
Order to A&D LD IO
Printed in the Federal Republic of Germany

Table of content
SIEMENS AG - Operating Instructions
Three-phase induction motor 1PH728. i
Table of content
1 1Safety information 1-1
1.1 Definitions, warning information........................................................................1-1
1.2 Safety and application information....................................................................1-2
2 2Description 2-1
2.1 Applications.......................................................................................................2-1
2.2 SIEMENS Service Center.................................................................................2-1
2.3 Scope of delivery...............................................................................................2-1
2.4 Nameplate.........................................................................................................2-2
2.5 Design...............................................................................................................2-3
2.5.1 Cooling..............................................................................................................2-3
2.5.2 Drive..................................................................................................................2-4
2.5.3 Types of construction........................................................................................2-5
2.5.4 Regulations .......................................................................................................2-7
2.5.5 Degree of protection..........................................................................................2-8
3 3Installation / Assembly 3-1
3.1 Transport, storage.............................................................................................3-1
3.2 Installation.........................................................................................................3-2
3.3 Mounting ...........................................................................................................3-4
3.4 Connecting the stator winding...........................................................................3-5
3.5 Connecting the ground conductor.....................................................................3-8
3.6 Connecting the fan..........................................................................................3-10
3.7 Connecting the speed sensor.........................................................................3-11
3.8 Connecting the temperature sensor................................................................3-11
4 4Commissioning 4-1
4.1 Preparations......................................................................................................4-1
4.2 Measures to be performed prior to commissioning...........................................4-3
4.3 Energizing .........................................................................................................4-4
5 5Operation 5-1
5.1 Operation ..........................................................................................................5-1
5.2 Stoppages.........................................................................................................5-2
5.3 De-energizing....................................................................................................5-2
6 6Faults 6-1
6.1 Fault diagnosis table.........................................................................................6-1
7 7Maintenance 7-1
7.1 Maintenance......................................................................................................7-1
7.1.1 Maintenance instructions ..................................................................................7-1
7.1.2 Maintenance intervals.......................................................................................7-2
7.1.3 Bearings............................................................................................................7-3
7.1.4 Lubrication.........................................................................................................7-3

Table of content
SIEMENS AG - Operating Instructions
ii Three-phase induction motor 1PH728.
7.1.5 Cleaning............................................................................................................7-6
7.2 Inspection..........................................................................................................7-6
7.2.1 General inspection specifications .....................................................................7-6
7.2.2 Initial inspection.................................................................................................7-7
7.2.3 Main service......................................................................................................7-8
7.3 Repair................................................................................................................7-8
7.3.1 Instructions for repair ........................................................................................7-8
7.3.2 Dismantling .......................................................................................................7-9
7.3.3 Re-assembly...................................................................................................7-12
7.3.4 Bolted connections..........................................................................................7-15
8 8Spare parts 8-1
8.1 Orders for spare parts.......................................................................................8-1
8.2 Spare parts 1PH7..............................................................................................8-1
Figures
Figure 2-1 Example: Motor nameplate 1PH7................................................................2-2
Figure 2-2 Cooling process for ventilating from the N-end to the D-end (basic type)...2-4
Figure 2-3 View from above onto type of contruction IM B3.........................................2-5
Figure 2-4 Layout of the louvered covers for various types of construction .................2-7
Figure 3-1 Circuit diagram.............................................................................................3-5
Figure 3-2 Tightening torques for contact nuts and mounting bolts..............................3-7
Figure 3-3 Detailed view: Connecting points for ground conductor (1 + 2)...................3-9
Figure 3-4 Detailed view of fan....................................................................................3-10
Figure 3-5 Detailed view: Speed sensor connection...................................................3-11
Figure 7-1 End shields at drive end and non drive end with grease nipples ................7-5
Figure 7-2 Disassembling the rotary shaft seal...........................................................7-11
Figure 7-3 Detailed view of the speed sensor.............................................................7-11
Figure 7-4 Packed sealing gap between enclosure and end shield...........................7-13
Figure 7-5 Installing the rotary shaft seal....................................................................7-15
Figure 8-1 Spare parts 1PH7 ........................................................................................8-3
Tables
Table 2-1 Motor Nameplate – Technical Data..............................................................2-2
Table 2-2 Additional hoisting points for different types of construction ........................2-6
Table 3-1 Weights of standard versions .......................................................................3-1
Table 3-2 Pressure drop in motors with pipe connection..............................................3-3
Table 3-3 Terminal box assignments............................................................................3-6
Table 6-1 Diagnosis table for mechanical faults...........................................................6-1
Table 6-2 Diagnosis table for electrical faults...............................................................6-1
Table 7-1 Service period intervals ................................................................................7-3
Table 7-2 Rolling-contact bearing greases...................................................................7-4

SIEMENS AG - Operating Instructions
Three-phase induction motor 1PH728. 1-1
1Safety information
1.1 Definitions, warning information
Qualified persons
Only properly qualified persons should be entrusted with the commissioning and
operation of machines and equipment. Qualified persons as far as the safety
instructions given in this manual are those who have the necessary authorization to
commission, earth and identify equipment, systems and circuits in accordance with
the relevant safety standards.
Safety Guidelines
This manual contains instructions which must be followed closely in order to
ensure personal safety and to avoid damage to the equipment and machines.
These instructions are highlighted in the manual by a warning triangle and are
marked as follows to the level of danger:
Danger
Danger means that death, grievous injury or extensive damage to property will
occur if the appropriate precautions are not taken.
Warning
Warning means that death, grievous injury or extensive damage to property may
occur if the appropriate precautions are not taken.
Caution
Caution with a warning triangle, means that minor personal injury may occur if the
appropriate precautions are not taken.

Safety information
SIEMENS AG - Operating Instructions
1-2 Three-phase induction motor 1PH728.
Caution
Caution without a warning triangle, means that damage to property may occur if
the appropriate precautions are not taken.
Notice
Notice means that an undesirable result or state might occur if the relevant
instructions are not followed.
Note
Note is an important information concerning the product, its use or the
corresponding section of the documentation which must be given special attention
and is recommended to be adhered to because of the potential benefits.
Compliance with intended use
Please pay close attention to the following:
Warning
The electrical equipment contains items that are at a dangerous voltage. Failure to
adhere to these instructions can result in serious injury and/or damage to the
equipment.
Safe and satisfactory operation of the product presumes satisfactory transport,
storage, installation and assembly and careful subsequent operation and
maintenance.
Any local safety rules and regulations in force must be complied with.
1.2 Safety and application information
The safe use of electrical machines
Danger
These electrical machines are designed for use in industrial power systems. While
in operation, the equipment has live, uninsulated parts as well as rotating parts.
There is consequently a risk of severe personal injury or substantial damage to
property, for example, if the necessary covers are removed without authorisation or
if the equipment is handled improperly, operated incorrectly or maintained
inadequately.

Safety information
SIEMENS AG - Operating Instructions
Three-phase induction motor 1PH728. 1-3
If the motors are used outside industrial areas, the installation site must be
safeguarded against unauthorised access by means of suitable protection facilities
(e.g. fencing) and appropriate warning signs.
The persons responsible for the safety of the system are under an obligation to
ensure that:
•=the basic planning work for the system and all work relating to transportation,
assembly, installation, commissioning, maintenance and repairs are carried out
by qualified persons and checked by responsible, suitably skilled persons.
•=these instructions and the motor documentation are made available at all times
while work is in progress.
•=the technical data and specifications relating to the permissible installation,
connection, ambient and operating conditions are taken into account at all
times.
•=the system-specific erection and safety regulations are observed and personal
protective gear is used.
•=work on these machines, or in the vicinity of these machines, by unqualified
persons is prohibited.
These instructions therefore only contain the information which is necessary for the
motors to be used by qualified persons in accordance with their intended purpose.
The instructions and the motor documentation are available in the languages
specified in the supply contracts.
Note
We recommend engaging the support and services of your local SIEMENS Service
Center for all planning, installation, commissioning and maintenance work.

SIEMENS AG - Operating Instructions
Three-phase induction motor 1PH728. 2-1
2Description
2.1 Applications
Overview
The three-phase motors of the 1PH7 series are used as industrial drives. They
have been designed for a wide range of applications in the fields of drive
engineering and power conversion.
They stand out thanks to their ruggedness, long lifetime and reliability. Not only
this, they are extremely versatile, which allows them to be optimally adapted to the
particular application and function.
2.2 SIEMENS Service Center
Contact for further information
Details about the design of the three-phase motor supplied and about the
permissible operating conditions are described in these Operating Instructions.
If you have any questions or suggestions, or if you require further information,
please contact the SIEMENS Service Center:
Industry Helpline (24-hour Service): 0180 – 5050111
A&D Technical Support: 0180 - 5050222
e-mail: [e-mail]
2.3 Scope of delivery
Checking the scope of delivery for completeness
The drive systems are put together on an individual basis. When you take receipt
of the delivery, please check immediately whether the scope of the delivery
matches up with the accompanying documents. SIEMENS will not accept any
warranty claims relating to items missing from the delivery, that are submitted later.
Register a complaint about:
– any transport damage detected immediately with the delivery agent.

Description
SIEMENS AG - Operating Instructions
2-2 Three-phase induction motor 1PH728.
– any defects/incomplete delivery detected immediately with the SIEMENS
representative responsible.
These Operating Instructions belong to the scope of delivery and must be kept
where they can be easily accessed.
The nameplate enclosed as a loose item with the delivery is provided to enable the
motor data also to be kept on or near the motor or installation.
2.4 Nameplate
Technical Data
The motor nameplate carries the technical data valid for the motor delivered.
MADE IN GERMANYMADE IN GERMANY
SIEMENS
Mot.
1PH7 286-0HB000AA31PH7 286-0HB000AA3
3
~
IM
B3 55
1112109020001
Gew./
IP Th.Cl. F
No
1474 kg
/2002/ 2002
WT.
N-
V A kW cosö
cosöHz 1/min
500
600
17
20.3
0.86
0.86
100
120
180
180
400
480
Ä
Ä
1/min
3300
max
EN/EC 60034-1EN/EC 60034-1
ENCODER H01 1024 S/RENCODER H01 1024 S/R
DEW0243
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Figure 2-1 Example: Motor nameplate 1PH7
The motor nameplate carries the following technical data:
Table 2-1 Motor Nameplate – Technical Data
Item Technical Data
1 Motor type: Three-phase servomotor
2 Type of construction
3 Degree of protection
4 Rated voltage [V] and winding connections
5 Rated current [A]
6 Rated output [kW]
7 Standards and regulations

Description
SIEMENS AG - Operating Instructions
Three-phase induction motor 1PH728. 2-3
Item Technical Data
8 Code, sensor type
9 Ident. No., serial number
10 Motor weight [kg]
11 Temperature class
12 Rated speed [rpm]
13 Rated frequency [Hz]
14 Power factor [cosϕ]
15 Maximum speed [rpm]
2.5 Design
2.5.1 Cooling
Description
The three-phase motors of the 1PH7 series are externally ventilated, low-voltage
induction motors with a squirrel-cage rotor and a separately driven fan unit
mounted as standard. They are of an enclosed design, with an internal cooling
circuit (cooling method IEC 60 034-6; DIN / EN IEC 60 034-6).
The separately driven fan unit and the terminal box can be mounted in a different
position depending on the order.

Description
SIEMENS AG - Operating Instructions
2-4 Three-phase induction motor 1PH728.
Figure 2-2 Cooling process for ventilating from the N-end to the D-end (basic type)
A KTY 84-130 temperature sensor is installed in the stator winding to monitor the
winding.
Depending on the order, various additional devices, such as a space heater or
sensor systems can be installed or built on.
Notice
A minimum clearance of 170 mm from devices added on by the customer must be
observed at the air intake opening and at the air outlet openings, in order to
guarantee the necessary flow of cooling air.
2.5.2 Drive
Description
The variable-speed, three-phase motors of the 1PH7 series are supplied with
power by a frequency converter.

Description
SIEMENS AG - Operating Instructions
Three-phase induction motor 1PH728. 2-5
2.5.3 Types of construction
Further potential applications
The type of construction of the motor is stated on the rating plate.
Caution
During transportation, motors may only be hoisted in a position corresponding to
their basic type of construction (i.e. horizontal construction types in horizontal
position and construction types in vertical position).
Basic type of construction
acc. to rating plate Type Other applications in type of construction
IM B3 1PH7 284…1PH7 288 IM B6, IM B7, IM B8
IM B35 1PH7 284…1PH7 288
Optional basic types of
construction Type Other applications in type of construction
IM V5 1PH7 284 ... 1PH7 288 IM V6
IM V 15 1PH7 284 ... 1PH7 288 IM V 36
Additional hoisting points for different types of construction
Additional hoisting points are provied for those types of construction that differ from
the basic types of construction IM B3 and IM B35.
(1)
(2) (3)
(4)
Figure 2-3 View from above onto type of contruction IM B3

Description
SIEMENS AG - Operating Instructions
2-6 Three-phase induction motor 1PH728.
Two additional rotatable eyebolts are supplied with these types of construction,
which must be bolted on as specified in the table below.
Table 2-2 Additional hoisting points for different types of construction
Hoisting points
Type of
construction 1 2 3 4
IM B6 XX
IM B7 XX
IM B8 XX
IM V5 XX
IM V6 XX
IM V36 XX
IM V15 XX
Layout of the louvered covers for various types of construction
For those types of construction that differ from basic types of contruction IM B3 and
IM B35, the louvered covers must be positioned as follows at the air inlet and air
outlet in order to maintain the degree of protection:

Description
SIEMENS AG - Operating Instructions
Three-phase induction motor 1PH728. 2-7
IM B6
IM B7
IM B8
IM V6, V36
IM V5, V15
Figure 2-4 Layout of the louvered covers for various types of construction
In addition, the motor of the separately driven fan of motors of vertical types of
construction must face upwards.
2.5.4 Regulations
Overview
The motors conform to the following regulations in accordance with IEC 60034
(previously VDE 0530):
Feature Standard
Dimensions and operating characteristics IEC / EN 60034-1
Degree of protection IEC / EN 60034-5
Cooling IEC / EN 60034-6
Type of construction IEC / EN 60034-7
Noise emission IEC / EN 60034--34-9
Vibration severity levels IEC / EN 60034-14

Description
SIEMENS AG - Operating Instructions
2-8 Three-phase induction motor 1PH728.
2.5.5 Degree of protection
The three-phase motors of the 1PH7 series are built to degree of protection IP 55
in accordance with EN 600034-5 (or IEC 34-5).
The shaft gland at the drive end (D-end) is built to degree of protection IP 54 as
standard.
The standard version of the motors is not suitable for operation in a salt-laden or
corrosive atmosphere, nor for installation outdoors.

SIEMENS AG - Operating Instructions
Three-phase induction motor 1PH728. 3-1
3Installation / Assembly
3.1 Transport, storage
Instructions relevant for safety
Please observe the following instructions on the transportation and storage of
motors.
Caution
Some motors may only be hooked up at and hoisted by the main eyebolts that are
located at the end shields. Auxiliary eyebolts, e.g. on fan cowls and cooler
attachments, are suitable only for hoisting the respective parts.
To hoist the motor, in particular at attachments and built-on assemblies, use
suitable cable-guidance or spreading equipment.
Observe the lifting capacity of the hoisting gear.
(See rating plate for weight.)
Table 3-1 Weights of standard versions
Type Weight
1PH7 284 1.3 t
1PH7 286 1.5 t
1PH7 288 1.8 t
Notice
If the motor is not immediately commissioned, then it should be stored in a dry
room, which is free from vibration and shock.
Transporting motors with a rotor shipping brace
Motors with cylindrical-roller bearings have a rotor shipping brace (shaft block), in
order to prevent the bearings from becoming damaged during
transportation/shipping.

Installation / Assembly
SIEMENS AG - Operating Instructions
3-2 Three-phase induction motor 1PH728.
•=Only remove this brace before fitting the drive element.
Notice
Take other suitable measures to axially fix the rotor if the motor has to be
transported after you have fitted the drive element.
3.2 Installation
Instructions relevant for safety
Caution
High temperatures can arise at the enclosure components of electric motors
(possibly > 100°C). Do not touch enclosure components while the motor is running
or immediately after it has been running.
Caution
When positioning temperature-sensitive components (wires etc.), make sure that
they are not in contact with the motor enclosure.
Notice
Also pay attention to the Technical Data on the rating plates on the motor
enclosure.
Cooling conditions in general
•=In the case of motors that are cooled by the ambient air, the cooling air must be
able to flow unimpeded to and from the motors. Hot discharged air must not be
reinducted (see also 2.5.1).
•=Ventilation openings may only be covered by louvered covers in motors of those
types of construction in which the openings point downwards.
Cooling conditions for motors with pipe connection
Motors that are configured to allow pipes to be connected and/or for operation with
a separately driven fan must have pipes and a fan of suitable type and
dimensioning mounted and connected to them.

Installation / Assembly
SIEMENS AG - Operating Instructions
Three-phase induction motor 1PH728. 3-3
Please refer to the table below for the potential pressure drop inside the motor for
motors with a pipe connection:
Table 3-2 Pressure drop in motors with pipe connection
1PH7 28.
Volumetric flow (V) Pressure drop (∆
∆∆
∆p)
0.42 m3/s 600 Pa
Notice
Please consider the additional pressure drop that arises in the system when
connecting the pipes.
Also ensure that:
•=you comply with the conditions of the IP degree of protection.
Higher IP requirements may necessitate the installation of suitable filters and
special positioning of the intake and outlet openings.
•=units and wires are mounted without distortion.
•=the shipping covers of the ventilation openings are removed.
Balancing quality
The rotors are balanced dynamically. In the case of shaft ends with featherkeys,
the method used to balance the rotors can be identified from the following coding
to be found on the end face at the drive end of the shaft end:
•="H" means balancing with half a featherkey (standard version); i.e., in order to
retain the balance quality, that part of the featherkey that projects out of the
drive element and the contour of the shaft (in the case of a shorter power take-
off element) may have to be machined off.
•="F" means balancing with a whole featherkey (optional version).
Make sure, that the balancing method of the power take-off element is correct!
Caution
Power take-off elements must only be fitted and pulled off with the aid of a suitable
tool.
The featherkeys are only locked against falling out during shipping.
Noise emissions
Motors of the 1PH7 series have a measuring-surface sound pressure level Lp(A) of
approx. 74 dB(A) in a speed range from 0 through 3000 rpm.

Installation / Assembly
SIEMENS AG - Operating Instructions
3-4 Three-phase induction motor 1PH728.
The motors are certified for a wide range of installation and operating conditions.
These conditions (e.g. rigid or vibration-isolated foundation design, use of sound-
absorbing elements) have to some extent a very great influence on noise
emissions.
When evaluating the noise levels at the workplaces of the system operators,
consider the fact, that the A-weighted sound pressure level (measured in
accordance with DIN EN 21680 Tl.1) of 70 dB(A) is exceeded when the three-
phase motors are operated at nominal load.
3.3 Mounting
Prerequisites
In order to ensure smooth, vibration-free motor operation, a stable foundation
design is required, the motor must be precisely aligned, and the components that
are to be mounted on the shaft end must be correctly balanced.
Fixing by means of motor feet
If the motor needs to be aligned, position metal shims underneath the feet in order
to prevent the motor from suffering distortion.
The number of shims should be kept as low as possible i.e. stack as few as
possible.
Mounting bolts
To securely mount the motor and reliably transfer the drive torque, use motor
mounting bolts with the required strength class (8.8) in accordance with ISO 8898-
1.
Notice
All flange motors must have stable suspension and be supported by means of the
end-shield feet (foot-flange type of construction). When commissioning, make sure
that the vibration values permitted in accordance with DIN ISO 10816 are
observed.
Motors that are mounted with their feet on the wall due to their type of construction
must be fixed in position by means of an adequately dimensioned form closure
(e.g. by pinning or using a wall mounting strip).