JS Technik MS Series User manual

JS-Technik GmbH - Lether Gerwerbestrasse 10 - 26197 Großenkneten - www.js-technik.de

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JS-Technik GmbH - Lether Gerwerbestrasse 10 - 26197 Großenkneten - www.js-technik.de
Table of contents
Table of contents..................................................................................................................................... 2
1. Safety instructions........................................................................................................................... 3
1.1. Validity..................................................................................................................................... 3
1.2. Qualification of the personnel................................................................................................. 3
1.3. Basic safety rules..................................................................................................................... 3
1.4. Electrical potential................................................................................................................... 3
1.5. Mechanical movement............................................................................................................ 4
1.6. Increased surface temperatures ............................................................................................. 4
1.7. Noise emission......................................................................................................................... 4
2. Proper use ................................................................................................................................... 4
2.1. Unauthorized usage ................................................................................................................ 5
2.2. EU Motor regulation VO (EG) No. 640 / 2009......................................................................... 5
3. Transport und storage................................................................................................................. 5
4. Installation and assembly............................................................................................................ 5
5. Electrical connection ................................................................................................................... 6
5.1. General information................................................................................................................ 6
5.2. Connection of lead out cables................................................................................................. 7
6. Commissioning ............................................................................................................................ 7
6.1. General information................................................................................................................ 7
6.2. Tightening torques .................................................................................................................. 8
7. Maintenance................................................................................................................................ 9
7.1. Initial inspection .................................................................................................................... 10
7.2. Main inspection..................................................................................................................... 10
7.3. Lubrication........................................................................................................................11-12
8. Auxiliary equipment .................................................................................................................. 13
8.1. Thermal protection................................................................................................................ 13
8.2. Electromagnetic compatibility .............................................................................................. 13
9. Troubleshooting ........................................................................................................................ 14
10. Construction of motors .................................................................................................... 15-18
11.
Declaration of conformity ..................................................................................................... 20
12.
Load capacity curve................................................................................................................ 19
7.3.1 Bearing sizes IP23 motors.............................................................................................................12

1. Safety instructions
Please read the operating manual carefully before you start with commissioning. Consider the
following warnings to avoid personnel injuries and machinery failures. JS-Technik
GmbH assumes no responsibility or guarantee for damage and consequential damage caused by
failure to observe the operating instructions.
1.1. Validity
These operating instructions are only valid for the following low-voltage three-phase motors
(for AC motors, brakemotors, motors with frequency inverters and ATEX motors
there are special operating and maintenance instructions from JS-Technik):
Series: MS, MX, MX2, MX3, ML, KSD, KSE
1.2. Qualification of the personnel
All work on transport, connection for commissioning, and regular maintenance must be conducted
by suitable, qualified, instructed, and authorised personnel. (VDE 0105: please observe IEC 364).
1.3. Basic safety rules
The safety risks posed by the motor must be reassessed after installing it into the end device. The
local occupational safety regulations must be observed during the usage of the motor. The
operation place must be kept clean and tidy.
1.4. Electric Voltage
Regularly check the electrical equipment of the motor. Immediately replace loose connections and
defected cables. To avoid electrical shock, use a rubber mat while working on the electrically
charged motor.
DANGER
Electric charge on the motor
Do not open the terminal box until five minutes after the voltage supply has been switched off.
DANGER Voltage can occur at the terminals even when the motor is switched off
Do not stay in the danger zone of the motor. When working on the motor, switch off the mains
voltage and secure it against being switched on again.
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DANGER
Motor restart
If the control voltage is applied or the speed setpoint is stored, the motor restarts automatically
after a power failure.
1.5. Mechanical movement
Body parts which come into contact with rotating parts, can be injured. Clothes, jewellery, and
similar objects can be caught and pulled into the motor. Secure the motor against contact. Do not
wear loose garments while working on the motor. A test run must be performed without a key (risk
of centrifuging).
DANGER
Rotating parts
1.6. Increased surface temperatures
Ensure sufficient contact protection to avoid burn risks.
DANGER
Surface temperatures
1.7. Noise emission
Take protection measures and secure the personnel with appropriate equipment, such as hearing
protection.
DANGER
Sound pressure level
2. Proper use
The motors are only approved by JS-Technik GmbH for being used for purposes specified in
the catalog and related technical documentation. Any other usage beyond this is not permitted.
This also includes the consideration of all related product regulations. Modifications to the
motor are not permitted. Other products and components which are being used with or
integrated to the motor must be approved by JS-Technik GmbH. The usage in EX-area is
prohibited, unless explicitly designated for this purpose (note additional information).
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2.1. Unauthorised usage
In particular, the following uses of motors are prohibited and can lead to machinery failure:
•Operating the motor with imbalance, for example, caused by dust deposits or icing.
•Resonance operation, operation with strong vibrations, transmitted from the environment to
the motor. Periodic shock impacts only up to 1G are permissible. For the higher shock loads
contact JS-Technik GmbH.
•Painting of the motors (if not explicitly approved by JS-Technik GmbH).
•Release connections, for example, screws during operation.
•Opening the terminal box during operation.
•Operating the motors near combustible materials or components.
•Operating the motors in an explosive atmosphere.
•Operation with fully or partially dismantled or manipulated devices.
2.2. EU Motor regulation VO (EG) No. 640 / 2009
Since June 2011 the European Commission’s Regulation (EC) No. 640 / 2009 for electric motors has
come into force. The regulation governs the eco-design requirements for 2-, 4- und 6-pole low-
voltage three-phase asynchronous motors in the power range 0.75 kW to 375 kW.
From 1. January 2017 all motors with a rated power of 0,75 –375 kW shall achieve at least the
efficiency level IE3, defined in point 1 of the Annex I or the level of efficiency IE2 defined in point 1 of
the Annex I and be equipped with a variable speed drive.
The regulation hereby allows the user to use either an IE3 motor (for fixed or variable speed), or an
IE2 motor in conjunction with a speed controller. The user is responsible for compliance with the
requirements of the EU regulation.
3. Transport und storage
Keep the motors safe against mechanical damage and only in closed dry rooms. In case of short-term
storage in an open air area the motors must be protected against harmful environmental influences.
Motors must not be transported and stored on the fan cover. For transport the eye bolts of motors
must be used with suitable lifting devices. The eye bolts are only intended for lifting the motor without
additional attachments such as base plates, gear boxes etc. If the eye bolt is removed after installation,
the openings must be permanently closed according to the type of protection.
For longer storage periods, a low vibration environment should be ensured to avoid bearing damage.
After a storage period or downtime period of more than 12 months, a check of the grease state of all
lubricated parts, such as bearings and shaft seal rings, must be carried out before commissioning and,
if necessary, the grease must be replaced.
4. Installation and assembly
The following points must be observed during installation and assembly:
Caution: for longer storage or
downtime periods a check of
bearings and oil seals must be
conducted before commissioning.
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•Ensure even support, precise alignment in case of direct coupling and
use of thread sizes specified in EN 50347 for motor feet and flange
mounting.
•Provide a vibration-free environment. Avoid build-up resonances with rotation frequency and
the double frequency of the power supply.
•Turn the rotor by hand, pay attention to unusual grinding noises. Check the direction of
rotation in the coupled state.
•Pull the drive elements (belt pulley, clutch etc.) on and off using only suitable devices. Use
cover to protect from touching. The part to be pulled on is to be heated. Transmission
elements must not be hammered on the shaft by force. Avoid excessive belt tension.
•Airflow must not be prevented. Ensure enough space for the airflow and that the blown-out,
heated cooling air is not drawn in back again.
•All components mounted on the shaft end must be carefully balanced. The standard motors
are half-key balanced unless explicitly specified.
•Due to the use of cylindrical roller bearings („reinforced NU-Bearing“) relatively high radial
forces or masses can be applied at the end of the motor shaft. The minimum radial force at the
shaft end must be a quarter of the permissible radial force. The permissible shaft load must be
taken into account.
•The user ensures that the condensate water drain holes on motors with increased IP
protection (IPX6 / IP6X) are sealed in a water –or dust-tight manner after the condensate has
been drained as well as during transport and storage.
•For the IM B14 and IM B34 mounting motors the maximum screw-in depths specified in the
table 1 must be observed. If an IM B14 and IM B34 mounting motor is used, stored or
transported without flanged equipment, the user must take appropriate precautions against
the intrusion of foreign particles and moisture through the threaded holes.
Frame size
Screw-in depth, mm
Frame size
Screw-in depth, mm
56-63
8
100-112
15
71
10
132
17
80
11
160
24
90
14
Table 1. Screw-in depths of motor mountings IM B14 and IM B34.
5. Electrical connection
5.1. General information
All maintenance procedures must only be carried out by a qualified specialist on a stationary
motor in a state where it is disconnected and secured against restart. This also applies to
auxiliary circuits (heating). Please note the performance data on the nameplate and connection
diagram in the terminal box.
Please consider notes from IEC / IEC 60034-1 (VDE 0530-1) on operation at the limits of ranges A (±5%
voltage or (±2% frequency deviation) and B, associated heating, and deviation of operating data from
rated data must be observed. Power supply cables should be selected according to the installation
specific conditions specified in DIN VDE 0100 (current, ambient temperature, installation method
etc.).
Caution: follow the performance
data on the motor nameplate.
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The connection must be made in such a way that a permanently secure electrical connection is
maintained (no protruding wire ends). Suitable cable lugs must be used for the connections of all
main cables. A safe protective conductor connection must be made. Tightening torques can be
found in Table 2.
Thread
Frame size
Tightening torque (Nm)
Min.
Tightening torque (Nm)
Max.
M4
BG56-80
1,9
2,2
M5
BG90-132
3,9
4,5
M6
BG160-180
6,6
7,5
M8
BG200-225
16,0
18,4
M10
BG250-280
32,0
36,0
M12
BG315 (only AWM)
68,0
74,0
M16
BG315, BG355 (only AWM)
139,0
159,0
M20
BG355, BG400 (only AWM)
273,0
312,0
M24
BG400
472,0
539,0
Table 2. Tightening torques for cable connection.
There must be no foreign bodies, dirt, or moisture in the terminal box. Close unused cable entry
openings and the terminal box so that they are dust- and watertight. For the test run without drive
elements, secure the feather key against being thrown out.
5.2. Connection of lead out cables
For motors with lead out cables, the terminal board is dismantled at the factory and the connecting
leads are connected to the terminals of the stator winding. The connection leads are colour-coded,
the assignment of the colour is glued on the cover plate. For the motor version with terminal box,
each individual wire is labeled. The user connects the lead out cables in the control cabinet
accordingly.
6. Commissioning
6.1. General information
The installation must be carried out in a power-supply-free state, in accordance with applicable
regulations by appropriately trained personnel. The nameplate date of the motor must be compared
to the power supply conditions. The dimensions of the power cables must be adapted to the nominal
currents of the motor. The motors are to be operated with an overcurrent protection, which is
adjusted according to the rated data (1.1 times rated current) of the motor. Failure to do so leads to
the winding defect and a loss of warranty.
Please check the insulation resistance of the winding before switching it on for the first time. The
resistance should be higher than 5MΩ at an ambient temperature of 25°C. After longer storage, the
insulation test must also be carried out. Before the machine is connected, the direction of rotation
Caution: ensure the appropriate
selection of the power supply cables.
Caution: check the insulation
resistance of the winding before
commissioning.
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must be checked. If necessary, change the direction of rotation by
exchanging the connection of two phases.
Before closing the terminal box it is essential to check that:
•The connection is done according to the connection diagram
•All terminal box connections, mounting parts and grounding connections are firmly tightened
•Auxiliary devices are functional
•All minimum values of the clearance distances between bare, voltage-carrying parts towards
the ground and to each other (10mm bus 750V) are complied with
•Unused cable entry openings and the condensate drain (if present) are sealed dust-tight and
water-tight.
When commissioning, it is advisable to observe the current consumption under load in order to
recognize any possible overload or asymmetries on the line.
6.2. Tightening torques
Table 3 shows tightening torques for screws of the end shields, bearing caps and terminal box.
Frame size
Arrangement
End shield
Bearing cap
Terminal box cap
Terminal box
Thread / Tightening torque (Nm)
56
B3/B5/B14
M4 / 2,0 Nm
-
M4 / 1,0 Nm
M4 / 2,0 Nm
63
-
M5 / 1,5 Nm
M5 / 3,0 Nm
71
-
80
M6 / 7,0 Nm
-
90
-
M5 / 2,5 Nm
M5 / 4,0 Nm
100
M8 / 17 Nm
-
112
-
132
-
160
M6 / 7 Nm
M6 / 3,0 Nm
M6 / 4,5 Nm
180
M10 / 34 Nm
M8 / 17 Nm
200
M12 / 60 Nm
M8 / 4,0 Nm
M8 / 7,0 Nm
225
M10 / 34 Nm
250
M8 / 4,5 Nm
M10 / 11,5 Nm
280
315
M16 / 149 Nm
M10 / 5,5 Nm
M10 / 12,5 Nm
355
M20 / 290 Nm
M12 / 7,0 Nm
M12 / 16,0 Nm
400
Table 3. Tightening torques for terminal box, end shield and bearing cap.
If a motor has an arrangement on feet (type B3, B34, B35), the following tightening torques for the
screws on the motor feet must be complied with:
Thread
Tightening torque (Nm) Min.
Tightening torque (Nm) Max.
M4
2,0
3,0
M5
3,5
5,0
M6
6,0
9,0
M8
16,0
24,0
M10
30,0
44,0
M12
46,0
70,0
M16
110,0
165,0
M20
225,0
340,0
8
Table 4. Tightening torques for motor feet screws.
JS-Technik GmbH - Lether Gerwerbestrasse 10 - 26197 Großenkneten - www.js-technik.de

Tightening torques for the metal and plastic cable glands for the direct attachment to the machine
and other glands (such as reducers) shall be in accordance with Table 5.
Cable gland
Metal ±10% Nm
Plastic ±10% Nm
M16 x 1,5
10
2
M20 x 1,5
12
4
M25 x 1,5
M32 x 1,5
18
6
M40 x 1,5
M50 x 1,5
20
M60 x 1,5
Table 5. Tightening torques for cable glands.
7. Maintenance
Maintenance of the motor may only be conducted considering the safety instructions in 1 –6. Careful
and regular maintenance, inspections and revisions are necessary in order to detect and correct any
faults in good time before damage can occur. General deadlines are given in the Table 6 below (periods
should be adapted to the local conditions, such as pollution, load etc.):
Function
Time interval
Periods
Initial inspection
After approx. 500h
At the latest after ½ year
Control of the airways and
surface of the motor
Depending on local conditions
Re-lubrication
Acc. Table 7 or nameplate
Once a year
Main inspection
10.000 h
Once a year
Table 6. Notifiable maintenance and inspections.
A grease quality allows the operation of the engine of the motors of 20.000 h without renewal of the
rolling bearing grease under normal load conditions and under normal environment conditions. The
condition of grease should however be controlled even during this period. The specified life
expectancy of bearings applies only for operation with nominal speed and bearing operating
temperature of 80°C (ambient temperature 20°C). When operating with inverter or increased ambient
temperatures, the specified lubrication periods must be reduced by 25% as a result of the higher
heating of the motor. If the nominal speed is exceeded during the operation of the motor with
inverter, the re-lubrication periods are reduced in the reverse proportion to the increase in the speed.
Re-lubricate the bearings after thorough cleaning with appropriate solvents.
The greases with the same oil base and the same thickener must be used. The grease
quantity indicated on the nameplate must be observed. Approximately twice the quantity is
required for the first relubrication, as the grease lubrication tubes are still empty. The used old
grease must be disposed of after 3 relubrication operations.
Caution: when operating over the
rated speed or at increased ambient
temperatures, the specified
lubrication periods must be reduced
by 25%.
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7.1. Initial inspection
The following tests are carried out when the machine is at a standstill:
•Check the foundation.
Following tests are carried out when the machinery is running:
•Check the electrical characteristics.
•Check the bearing temperatures.
•Check the running noise.
7.2. Main inspection
The following tests are carried out when the machine is at a standstill:
•Check the foundation.
•Check the alignment of the motor.
•Check the fastening screws and tightening torques
•Check the cables and the insulation material. The test determines whether the cables and the
insulating materials are in a proper condition. They must not display discoloration or any burn
marks and must not be cracked or otherwise damaged.
•Check the insulation resistance
•Depending on the quality of grease, local ambient conditions and the duty, the change of the
rolling bearings and the oil seals may be necessary after 10.000 h (but at least annually).
The following tests are carried out when the machine is running:
•Check the electrical characteristics
•Check the bearing temperatures
•Check the running noise
All discrepancies discovered during the inspections must be rectified immediately.
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7.3 Lubrication
For motors with open rolling bearings (current-insulated or "reinforced" NU bearings), the relubrication
intervals must be observed in accordance with the table shown .
*= For motors of size 56 to 180, closed bearings with lifetime lubrication are used!
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Power
Re-Lubrication-
Quantity DE/NDE
Gram
11 *
15 *
18,5 *
22 *
30 25/25
37 25/25
45 25/25
55 35/35
75 35/35
90 35/35
110 50/50
132 50/50
160 50/50
200 50/50
250 60/60
315 60/60
11 *
15 *
18,5 *
22 *
30 25/25
37 25/25
45 25/25
55 35/35
75 35/35
90 35/35
110 50/50
132 50/50
160 50/50
200 50/50
250 60/60
315 60/60
SEV-355M4 4 6322 / NU322 6322 2800 80/80
SEV-355L4 4 6322 / NU322 6322 2800 80/80
SEV-315L4 4 6319 / NU319 6319 3500 65/65
SEV-315Lx-4 4 6319 / NU319 6319 3500 65/65
SEV-315S4 4 6319 / NU319 6319 3500 65/65
SEV-315M4 4 6319 / NU319 6319 3500 65/65
SEV-280S4 4 6317 / NU317 6314 4000 45/45
SEV-280M4 4 6317 / NU317 6314 4000 45/45
SEV-225M4 4 6313 / NU313 6312 5000 32/32
SEV-250M4 4 6314 / NU314 6313 4500 45/45
SEV-200L4 4 6312 / NU312 6212 5000 32/32
SEV-225S4 4 6313 / NU313 6312 5000 32/32
SEV-180M4 4 6311 6211 * *
SEV-180L4 4 6311 6211 * *
SEV-160M4 4 6309 6209 * *
SEV-160L4 4 6309 6209 * *
SEV-355L-2 2 6319 / NU319 6319 1000 80/80
SEV-315Lx-2 2 6317 / NU317 6317 1000 65/65
SEV-355M2 2 6319 / NU319 6319 1000 80/80
SEV-315M2 2 6317 / NU317 6317 1000 65/65
SEV-315L2 2 6317 / NU317 6317 1000 65/65
SEV-280M2 2 6314 / NU314 6314 1000 45/45
SEV-315S2 2 6317 / NU317 6317 1000 65/65
SEV-250M2 2 6313 / NU313 6313 1000 45/45
SEV-280S2 2 6314 / NU314 6314 1000 45/45
SEV-200Lx-2 2 6212 / NU312 6212 1500 32/32
SEV-225M2 2 6312 / NU312 6312 1500 32/32
SEV-180M2 2 6211 6211 * *
SEV-200L2 2 6212 / NU312 6212 1500 32/32
SEV-160Mx-2 2 6209 6209 * *
SEV-160L2 2 6209 6209 * *
Type Pole
Ball bearing
(A-Side)
Bearing clearance:C3
Re-Lubrication-
Intervalls
Hours
First - Filling
DE/NDE
Gram
SEV-160M2 2 6209 6209 * *
Ball bearing
(B-Side)
Bearing clearance:C3
Table 7. Relubrication intervals for open and reinforced bearings

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7,5 *
11 *
15 *
18,5 25/25
22 25/25
30 25/25
37 35/35
45 35/35
55 35/35
75 50/50
90 50/50
110 50/50
132 50/50
160 60/60
200 60/60
4 *
5 5 *
7 5 *
11 *
15 25/25
18 5 25/25
22 25/25
30 35/35
37 35/35
45 35/35
55 50/50
75 50/50
90 50/50
110 50/50
132 60/60
160 60/60
180 60/60
200 60/60
160
180
200
225
250
280
315
355
6317 C3 6317 C3 6319 C3 6319 C3 6319 C3 6319 C3
6317 C3 6317 C3 6322 C3 6320 C3 6322 C3 6320 C3
6314 C3 6314 C3 6317 C3 6317 C3 6317 C3 6317 C3
6314 C3 6314 C3 6318 C3 6318 C3 6318 C3 6318 C3
6313 C3 6313 C3 6313 C3 6313 C3 6313 C3 6313 C3
6314 C3 6314 C3 6314 C3 6314 C3 6314 C3 6314 C3
6310 C3 6309 C3 6310 C3 6309 C3 6310 C3 6309 C3
6312 C3 6312 C3 6312 C3 6312 C3 6312 C3 6312 C3
Size 2 pole 4 pole 6 pole
DE NDE DE NDE DE NDE
SEV-355L-8 8 6322 / NU322 6322 4800 80/80
Table 7.1 Ball bearings IP23 Motors
Ball bearings IP23
SEV-355M2-8 8 6322 / NU322 6322 4800 80/80
SEV-355M3-8 8 6322 / NU322 6322 4800 80/80
SEV-315L2-8 8 6319 / NU319 6319 5800 65/65
SEV-355M1-8 8 6322 / NU322 6322 4800 80/80
SEV-315M-8 8 6319 / NU319 6319 5800 65/65
SEV-315L1-8 8 6319 / NU319 6319 5800 65/65
SEV-280M-8 8 6317 / NU317 6314 6000 45/45
SEV-315S-8 8 6319 / NU319 6319 5800 65/65
SEV-250M-8 8 6314 / NU314 6313 6300 45/45
SEV-280S-8 8 6317 / NU317 6314 6000 45/45
SEV-225S-8 8 6313 / NU313 6312 6500 32/32
SEV-225M-8 8 6313 / NU313 6312 6500 32/32
SEV-180L-8 8 6311 6211 * *
SEV-200L-8 8 6312 / NU312 6212 6500 32/32
SEV-160M2-8 8 6309 6209 * *
SEV-160L-8 8 6309 6209 * *
SEV-160M1-8 8 6309 6209 * *
SEV-355M6 6 6322 / NU322 6322 4800 80/80
SEV-355Mx-6 6 6322 / NU322 6322 4800 80/80
SEV-315L6 6 6319 / NU319 6319 5800 65/65
SEV-315Lx-6 6 6319 / NU319 6319 5800 65/65
SEV-315S6 6 6319 / NU319 6319 5800 65/65
SEV-315M6 6 6319 / NU319 6319 5800 65/65
SEV-280S6 6 6317 / NU317 6314 6000 45/45
SEV-280M6 6 6317 / NU317 6314 6000 45/45
SEV-225M6 6 6313 / NU313 6312 6500 32/32
SEV-250M6 6 6314 / NU314 6313 6300 45/45
SEV-200L6 6 6312 U312 6212 6500 32/32
SEV-200Lx-6 6 6312 / NU312 6212 6500 32/32
SEV-160L6 6 6309 6209 * *
SEV-180L6 6 6311 6211 * *
SEV-160M6 6 6309 6209 * *
Table 7.1 Ball bearings IP23
Power
Re-Lubrication-
Quantity DE/NDE
Gram
Type Pole
Ball bearing
(A-Side)
Bearing clearance:C3
Re-Lubrication-
Intervalls
Hours
First - Filling
DE/NDE
Gram
Ball bearing
(B-Side)
Bearing clearance:C3
Table 7. Relubrication intervals for open and reinforced bearings

Re-greasing on a running machine as well as downtime re-greasing is possible. Following information
should be noted:
•When the motor is running, make sure that the grease outlet, grease inlet, and channel are
open. Inject the intended amount of grease into the bearing and let the machine run for 1 –
2 hours. Close the plug of the grease outlet. There may be a temporary increase in
temperature of the bearing for the next 10 hours.
•When the motor is at a standstill, only half of the relubricating grease quantity must be used
at first. Then let the motor run for 1 hour. After the motor has been switched off, inject the
rest of the specified relubricating grease quantity into the bearing. After 2 hours of running,
close the grease outlet.
For re-lubrication only ball bearing / roller bearing suitable grease with following properties can be
used:
2-poles 4-poles 6-poles 8-poles
63XX.C3 NU3XX.
C3 63XX.C3 NU3XX. C3 63XX.C3 NU3XX. C3 63XX.C3 NU3XX. C3
Basis oil Mineral oil
Thickener Lithium
soap
Mixed
thickener
Lithium
soap
Mixed
thickener
Lithium
soap
Mixed
thickener
Lithium
soap
Mixed
thickener
Viscosity
40°C 68-100 100-150 100-150 150-220 150-220 ≥220 150-220 ≥220
Consistency 3
Least
continuous
service
temperature
-30
+120°C
-30
+140°C
-30
+120°C
-30
+140°C
-30
+120°C
-30
+140°C
-30
+120°C
-30
+140°C
Table 8. Selection of the re-lubrication grease.
13
Table 8 displays a grease specification and is only valid for ambient temperatures of –30°C to +60°C,
bearing temperature up to 110°C and operation with the rated speed. When operating above the rated
speed, special high-speed greases may be used.
8. Auxiliary equipment
The motors are equipped with additional devices:
Caution: use appropriate grease for
re-lubrication.
8.1. Thermal protection
To monitor the stator winding temperature PTC, PTO and PT100 can be used. For their
connection, corresponding auxiliary terminals and circuits are provided in the main terminal
box. If it is necessary to re-measure the cold resistance (at approx. 20 ° C) of the sensor circuit, the
measuring voltage must not exceed 2.5V DC.
8.2. Electromagnetic compatibility
The conformity of the motors as an independent unit with the EMC standards has been confirmed.
The user of machinery is responsible for the fact that appropriate measures are taken to ensure that
the devices or systems, in which the motors are integrated, as a whole comply with the
relevant standards of the EMC. Each motor is supplied with the binding connection diagram
according to which the connection must be made.
JS-Technik GmbH - Lether Gerwerbestrasse 10 - 26197 Großenkneten - www.js-technik.de

Defect rotor / broken rotor bars Check the broken bars and end
rings.
Winding / phase short circuit Motor overhaul is needed
Overheating of the machinery
during operation with load
Overload Reduce the load
Cooling is prevented by dust
accumulation
Ensure proper cooling and
cleanliness
Interruption of one phase Check connection and switches
Short circuit on the ground Repair in workshop needed
Imbalance of the power supply Check the cables and
transformer for faults
Motor vibrations Wrong allignment Allign the motor
Substrucutre is unstable Reinforce substructure
Imbalance in clutch / gearbox Balance clutch / gearbox
Imbalance in driven machinery Re-balance the machinery
system
Defect bearing Exchange the bearing
Multi-phase motor runs single-
phase
Check the circuit
Operation noise Circulating parts grinding Correct the mounting
Winding / phase short circuit Motor overhaul
Interruption of one phase Check connection and switches
High bearing temperature Motor shaft bent or damaged Straighten or replace the shaft
Wrong belt drive Reduce belt tension, arrange
pulley closer to the bearing
Wrong allignment Allign the machinery
Inadequate / excess grease Note the amount of re-grease
Table 9. Troubleshooting
14
Failure Cause Actions
The machinery doesn’t start Overload Reduce the load
Wrong stator connection Check the connection
Fault power supply Check that power supply
complies with information on
nameplate
Interruption of one phase Check connection and switches
Mechanical fault Check that motor rotates
freely. Check the bearing and
lubrication.
Rotor defect Check the broken bars and end
rings.
Fuses burnt Use suitable fuses
The machinery is accelerating
slow / doesn’t accelerate
Load inertia at start to high Reduce the load
Under-voltage at motor
terminals due to the voltage
drop
Use higher voltage or higher
transformer stage or reduce
the load. Use appropriate cable
cross-section.
9. Troubleshooting
Table 9 addresses the causes of errors that may occur and the action to be taken. All procedures are
only allowed to be carried out by qualified personnel using suitable tools and instruments. For
further information please contact JS-Technik GmbH.
JS-Technik GmbH - Lether Gerwerbestrasse 10 - 26197 Großenkneten - www.js-technik.de

15
10. Structure of the motors
Beschreibung Ersatzteile / description of spare parts
Aluminiumgehäuse / aluminum housing
No. Bezeichnung description Serie MS Serie ML
1 Statorgehäuse Stator-housing X X
2 A-Lagerschild Drive end shield X X
3 Dichtung für Klemmenkasten Gasket for terminal box X X
4 Klemmenkasten Terminal box X
5 Klemmenkastendeckel Terminal box cover X
6 Dichtung für Klemmenkastendeckel Gasket for terminal box cover X
7 Anbaufüße für Statorgehäuse Mounting feet for stator housing X X
8 B-Lagerschild Non drive end shield X X
9 Kurzschlussläufer Squirrel-cage X X
10 DE-Lager Drive end bearing X X
10a NDE-Lager Non drive end bearing X X
11 Passfeder Key X X
12 Lüfterflügel Fan-blades X X
13 Wellendichtring Dust seal X X
14 Klemmenbrett Terminal board X X
15 Kabelverschraubung Cable gland X X
16 Sicherungsring Circlip X X
17 Lagerausgleichscheibe Bearing shim X X
18 Lüfterhaube Fan cover X X
19 Typenschild Name plate X X
20 Schraube für Lagerschild bzw. Flansch Screw for end shield / flange X X
21 Schraube für Klemmenkasten Screw for terminal box X X
22 Schraube für Klemmenbrett Screw for terminal board X X
23 Schraube für Klemmenkastendeckel Screw for terminal box cover X X
24 Schraube für Lüfterhaube Screw for fan cover X X
25 B5 -Flansch Flange IM B5 X X
26 B14 - Flansch Flange IM B14 X X
27 Schraube für Anbaufüße Screw for mounting feet X X
28 Klemmenkasten Terminal box X
29 Klemmenkastendeckel Terminal box cover X
30 Dichtung für Klemmenkastendeckel Gasket for terminal box cover X
32 Kondensator capacitor X
32 Fremdlüfter Force ventilation X X
Beschreibung Ersatzteile Bremsausführung
Description Spare parts braking performance
33 Gleichrichter rectifier X X
B1 Bremslagerschild b-seitig (Grauguss) Drive end shield for brake X
B2 B-Lagerschild mit Bremsflansch Drive end shield with brake-flange X X
B3 Bremsnarbe brake hub X X
B4 Passfeder Key X X
B5 Bremse Brake X X
B6 Bremsscheibe Brake-disc X X
B7 Handlüftung manual release X X
B8 Handlüftungshebel Manual release lever X X
B9 Lüfterflügel Fan-blades X X
B10 Mikroschalter Microswitch X X
B11 Bremslüfterhaube Fan cover X X
B12 Sicherungsring circlip X X
JS-Technik GmbH - Lether Gerwerbestrasse 10 - 26197 Großenkneten - www.js-technik.de

Der Hersteller behält sich Änderungen vor.
The manufacturer reserves the right to make changes.
33
30
6
5
14
22
21
10
29
28
18
16
12
8
19
27
7
10a
1
25
13
20
17
11
15
26
3
4
32
13
2
23
9
20
24
Beschreibung Ersatzteile / description of spare parts
Aluminiumgehäuse / aluminum housing
31
B4
B12
B5
B9
B2
B2
B3
B1
B11
B6
B7
B10
B8
B12
16
JS-Technik GmbH - Lether Gerwerbestrasse 10 - 26197 Großenkneten - www.js-technik.de

Beschreibung Ersatzteile / description of spare parts
Graugussgehäuse / cast iron housing
No. Bezeichnung description Serie M Serie MQ
1 A - Lagerschild Drive end shield X X
1a B – Lagerschild Non drive end shield X X
2 Schrauben für Lagerschild bzw. Flansch Screw for end shield / flange X X
3 B5 – Flansch Flange IM B5 X X
4 DE - Lagerdeckel „außen“ Drive end outer bearing cap X X
4a DE - Lagerdeckel „innen“ Drive end inner bearing cap X X
5 Schrauben für Lagerdeckel Screw for drive end
outer bearing cap X X
6 Schmiernippel grease nipple X X
7 Lagerausgleichsscheibe Bearing shim X X
8 Passfeder Key X X
9 Kurzschlussläufer Squirrel-cage X X
10 DE – Lager Drive end bearing X X
10a NDE – Lager Non drive end bearing X X
11 Typenschild Name plate X X
12 NDE - Lagerdeckel „außen“ Non drive end outer bearing cap X X
12a NDE - Lagerdeckel „innen“ Non drive end inner bearing cap X X
13 Lüfterflügel Fan-blades X X
14 Sicherungsring circlip X X
15 Lüfterhaube Fan cover X X
16 Schraube für Lüfterhaube Screw for fan cover X X
17 Stopfen für Lüfterhaube Stopper for fan cover X X
18 Fremdlüfter Force ventilation X X
19 Dichtung für Klemmenkasten Gasket for terminal box X X
20 Klemmenbrett Terminal board X X
21 Schraube für Klemmenbrett Screw for terminal board X X
22 Klemmenkasten Terminal box X
23 Dichtung für Klemmenkastendeckel Gasket for terminal box cover X
24 Klemmenkastendeckel terminal box cover X
25 Schraube für Klemmenkastendeckel Screw for terminal box cover X X
26 Schraube für Klemmenkasten Screw for terminal box X X
27 Klemmenkastendeckel terminal box cover X
28 Dichtung für Klemmenkastendeckel Gasket for terminal box cover X
29 Klemmenkasten Terminal box X
30 Kabelverschraubung Cable gland X X
31 Statorgehäuse Stator-housing X X
Beschreibung Ersatzteile Bremsausführung
Description Spare parts braking performance
31 Gleichrichter rectifier X X
B1 B – Lagerschild, inkl. Bremsflansch Drive end shield with brake-flange X X
B2 NDE - Lagerdeckel „außen“ Non drive end outer bearing cap X X
B3 Bremsnarbe brake hub X X
B4 Passfeder Key X X
B5 Bremse Brake X X
B6 Bremsscheibe Brake-disc X X
B7 Handlüftung manual release X X
B8 Handlüftungshebel Manual release lever X X
B9 Lüfterflügel Fan blades X X
B10 Mikroschalter Microswitch X X
B11 Bremslüfterhaube Fan cover X X
B12 Sicherungsring circlip X X
17
JS-Technik GmbH - Lether Gerwerbestrasse 10 - 26197 Großenkneten - www.js-technik.de

Der Hersteller behält sich Änderungen vor.
The manufacturer reserves the right to make changes.
32
12
Graugussgehäuse / Cast iron housing
Beschreibung Ersatzteile / description of spare parts
23
24
22
31
30
27
28
29
18
13
9
14 15
5
4
11
21
20
19
10a
10
31
8
1
5
4a
2
12a
16
25
26
7
2
31
3
17
6
1a
B1
B2
B8
B6
B2a
B7
B11
B10
B5
B9
B3
B4
B12
B1
B12
18
JS-Technik GmbH - Lether Gerwerbestrasse 10 - 26197 Großenkneten - www.js-technik.de

0
0.
2
0.
4
0.
6
0.
8 1
0
10
02
03
70
08
90100
1.1
0.
9
0.7
0.5 0.3 0.1
Size
Load capacity curve of JS-Technik electric motors in
frequency inverter operation without forced cooling fan
Nominal torque in %
40
50
06
Frequency in Hertz
200 - 315
63 - 180
19
11. Load capacity curve
Size
JS-Technik GmbH - Lether Gerwerbestrasse 10 - 26197 Großenkneten - www.js-technik.de

20
JS-Technik GmbH - Lether Gerwerbestrasse 10 - 26197 Großenkneten - www.js-technik.de
Manufacturer:
Address:
Product name:
1) Motors that comply with Guidline 2009/125/EC and Regulation (EU) No. 4/2014 are given the identifier IEx-, before the
series designation where x = 1,2,3,4 (according to EN 60034-30-1:2014).
The subject matter of the declaration described above complies with the relevant EU harmonisation
legislation:
2014/35/EU
Directive of the European Parliament and of the Council of 26 February 2014 onthe
harmonisation of the laws of the Member States relating to themaking available onthe
market of electrical equipment designed foruse within certain voltage limits
Official Journal ofthe European Union L96, 29.03.2014, S. 357-374
2014/30/EU
Directive of the European Parliament and of the Council of 26 February 2014 onthe
harmonisation of the laws of the Member States relating to electromagnetic compatibility
Official Journal ofthe European Union L96, 29.03.2014, S. 79-106
2009/125/EC
Directive of the European Parliament and of the Council of 21 October 2009 establishing a
framework for thesetting of ecodesign requirements forenergy-related products Official
Journal ofthe European Union L285, 31.10.2009, S.10-35
The sole responsibility forissuing this Declaration of Conformity lies with the
manufacturers.
Compliance with the provisions ofthese Directives is demonstrated by compliance with the
following standards:
Reference number and issue date
EN 61000-6-2:2005+Cor.:2005, EN61000-6-4:2007+A1:2011
EN 60038:2011, EN 60204-1:2018
EN 60034-1 :2010+Cor.:2010 and all other relevant parts and additions EN60034- ...
The specified product is intended for incorporation into another machine. Commissioning is
prohibited until the conformity of the final product with Directive 2006/42/EC has been
established. The safety instructions in the supplied product documentation must be observed.
This certificate attests the conformity with the named directives; however, it is not a promise of properties in the meaning of
product liability. In case of electronic communication, the signature does not appear.
JS-Technik GmbH
Lether Gewerbestrasse 10
26197 Großenkneten
Low voltage asynchronous motors,
single phase motors, gear motors
EU Declaration of Conformity
Joachim Schulz
Managing Director