Technical definitions for servomotors

Regulations, standards, and specifications

The motors comply with the appropriate standards and regulations, see table below.

As a result of the fact that in many countries the national regulations have been completely harmonized with the international IEC 60034‑1 recommendation, there are no longer any differences with respect to coolant temperatures, temperature classes and temperature rise limits.

General specifications for rotating electrical machines	IEC 60034-1
Terminal designations and direction of rotation for electrical machines	IEC 60034-8
Types of construction of rotating electrical machines	IEC 60034-7
Cooling methods of rotating electrical machines	IEC 60034-6
Degrees of protection of rotating electrical machines	IEC 60034-5
Vibration severity of rotating electrical machines	IEC 60034-14
Noise limit values for rotating electrical machines	IEC 60034-9
Cylindrical shaft ends for electrical machines	DIN 748‑3/IEC 60072‑1

G_D211_XX_00324

SIMOTICS S motors are UL approved by Underwriters Laboratories Inc. and have the "UL Recognized Component" test mark. This is used for components that are part of a larger product or system. This confirms compliance with the corresponding American and Canadian regulations, and allows the North American market to be accessed.

G_D011_XX_00041

SIMOTICS S motors are certified to comply with the relevant EC guidelines 2006/95/EC and 2014/35/EU as well as the relevant standards EN 60034‑1:2010, EN 60204‑1:2006. By applying the CE mark to the product, Siemens AG confirms this for the product, and secures the free movement of goods within the European Union.

The SIMOTICS S servomotors are usually identified using a second nameplate.

Degree of protection according to IEC 60034-5

A suitable degree of protection must be selected according to the operating and environmental conditions to protect the motor against damage caused by the ingress of liquids, as well as dust and foreign bodies

The protection class designation according to IEC 60034‑5 is derived from the abbreviation IP (for International Protection) and two code numbers:

Fird code number

6: Protection against dust ingress and complete protection against touching

Second code number

4: Protection against splashwater from any direction

5: Protection against jet water from any direction

7: Protection against short-term immersion in water

Recommended degrees of protection for three-phase motors

When cooling lubricants are used, protection against water alone is inadequate. The IP rating should only be considered as a guideline in this case. The motors may have to be protected by suitable covers. When selecting the motor degree of protection, the motor shaft must be equipped with a suitable seal. It must be avoided that liquid accumulates on the flange when the motor is mounted with the shaft end facing upwards (IM V3).

The following table provides support when selecting the appropriate degree of protection for motors.

Effect	General workshop environment	Water/ general cooling lubricant (95 % water, 5 % oil)
Dry	IP64	–
Humid/moist environment	–	IP64
Mist	–	IP65
Spray	–	IP65
Jet	–	IP67
Splash/ brief immersion/ constant immersion	–	IP67

Type of construction, installation position according to IEC 60034‑7

The SIMOTICS S-1FT2 motors have an IM B5 type of construction. They may also be used in mounting positions IM V1 and IM V3.

Code 1	IM B5	IM V1	IM V3
Code 2	IM 3001	IM 3011	IM 3031
	G_D011_XX_00541 Horizontal flange mounting	G_D011_XX_00542 Flange mounting, output shaft pointing vertically downwards	G_D011_XX_00543 Flange mounting, output shaft pointing vertically upwards

Shaft and flange accuracy according to IEC 60072‑1 or DIN 429955

Radial eccentricity tolerance of shaft in relation to housing axis

(referred to cylindrical shaft ends)

Shaft end ØD × L	acc. to IEC 60072‑1 or Tolerance "N" acc. to DIN 429955	Tolerance "R" acc. to DIN 429955
mm (in)	μm	μm
8 × 25 (0.31 × 0.98)	30	15
11 × 23 (0.43 × 0.91)	35	18
14 × 30 (0.55 × 1.18)
19 × 40 (0.75 × 1.57)	40	21
24 × 50 (0.94 × 1.97)
32 × 58 (1.26 × 2.28)	50	25
38 × 80 (1.50 × 3.15)
48 × 82 (1.89 × 3.23)

G_DA65_XX_00063

Concentricity tolerance of the centering ring and axial eccentricity tolerance of the flange surface referred to the motor shaft

Centering diameter	acc. to IEC 60072‑1 or Tolerance "N" acc. to DIN 429955	Tolerance "R" acc. to DIN 429955
mm (in)	μm	μm
30 (1.18)	60	30
40 (1.57)	80	40
50 (1.97)
60 (2.36)
70 (2.76)
80 (3.15)
95 (3.74)
110 (4.33)	100	50
130 (5.12)
180 (7.09)
250 (9.84)	125	63

G_DA65_XX_00064

Vibration severity grades and vibration severity grades A and B according to EN 60034‑14

The vibration severity is the root-mean square value (rms value) of the vibration velocity (frequency range from 10 Hz to 1000 Hz). The vibration severity is measured using electrical measuring devices according to DIN 45666.

The specified values refer only to the motor. The system vibration behavior as a result of the installation can increase these values.

G_D011_XX_00547

Vibration severity limit values

The speeds of 1800 r/min and 3600 r/min and the corresponding limits are specified in accordance with IEC 60034‑14.
The speeds of 4500 r/min and 6000 r/min and the specified values have been determined by the motor manufacturer.

The motors maintain vibration severity grade A up to the rated speed.

Balancing in accordance with ISO 21940‑32

Apart from the balance quality of the motor, the vibrational quality of motors with attached belt pulleys is mainly determined by the balance state of the mounted component. If the motor and the mounted component are balanced separately before being assembled together, the balancing process of the belt pulley should be adapted to the balancing type of the motor.

The motors with feather key are always half-key balanced. In general, motors with a plain shaft are recommended for systems with the most stringent vibrational quality requirements.

Vibration stress, immitted vibration values

To function correctly and to ensure the bearing lifetime, the requirements of environmental class 3M8 (according to EN 60721‑3‑3 Table 6) must be complied with. The following limits are valid for (immitted) vibration values introduced into the motor from outside:

• Vibration velocity V_eff in accordance with ISO 10816 max. 4.5 mm/s (0.18 in/s)
• Vibration acceleration a_peak:

Vibration acceleration apeak
	1F□7	1F□2
Axial	25 m/s2 (82 ft/s2)	50 m/s2 (164 ft/s2)
Radial	50 m/s2 (164 ft/s2)	50 m/s2 (164 ft/s2)

During transport, the motors withstand single shocks (6 ms) of up to 250 m/s² (820 ft/s²). Different values may apply to motors with mounted planetary gearboxes. More information is provided in the Configuration Manual of the particular product.

Ambient temperature and installation altitude

Operating range without restrictions:

Temperature range from -15 °C to +40 °C (5 °F to 140 °F), installation altitude up to 1000 m (3281 ft).

If deviating conditions are encountered, the S1 characteristic of the motor must be adapted with regard to speed and torque.

The reduced S1 characteristic should be calculated according to the following formula:

S1_red(n) = x_D • S1_{40°C; 1000m} • (n / x_D)

Factors x_D for derating depending on installation altitude and ambient temperature. (intermediate values should be interpolated)

Motor	Installation altitude above sea level	Ambient temperature in °C (°F)
	m (ft)	30 (86)	40 (104)	45 (113)	50 (122)	55 (131)
1F□7	1000 (3281)	1.05	1	0.97	0.95	0.92
	2000 (6562)	1	0.95	0.92	0.89	0.87
	3000 (9843)	0.95	0.89	0.87	0.84	0.81
	4000 (13124)	0.89	0.84	0.81	0.77	0.74
1F□2	1000 (3281)	1.05	1	0.95	0.89	0.84
	2000 (6562)	1	0.95	0.86	0.8	0.73
	3000 (9843)	0.95	0.89	0.76	0.69	0.62
	4000 (13124)	0.89	0.84	0.65	0.57	0.47

Factors for derating depending on installation altitude and ambient temperature

Encoder systems

For motors with integrated DRIVE-CLiQ interface, the encoder signal is already digitally processed in the motor, and then transferred quickly and without loss to the drive system. Motors with DRIVE-CLiQ interface simplify commissioning and diagnostics by automatically identifying the motor parameters and the encoder system.

Motors without DRIVE-CLiQ interface are intended for converters with analog encoder evaluation (e.g. from third-party manufacturers).

Single-turn absolute encoder

This encoder outputs an absolute angular position between 0° and 360° in the specified resolution. In contrast to the multi-turn absolute encoder, it does not have a revolution counter, and can therefore only supply the position value within one revolution. It does not have a traversing range.

Multi-turn absolute encoder

This encoder outputs an absolute angular position between 0° and 360° in the specified resolution. It can also count 4096 revolutions. For a ball screw, for example, the absolute position of the slide can be determined over a longer distance.

Incremental encoder

This encoder senses relative movements and does not supply absolute position information. In combination with evaluation logic, a zero point can be determined using the integrated reference mark, which can be used to calculate the absolute position.

Resolver

A resolver provides sin/cos signal periods per motor revolution according to its number of pole pairs. 2-pole resolvers can be used for motors with any number of poles. For multi-pole resolvers, the number of motor pole pairs and the resolver are always identical.

Short designation of the encoder systems

The first letters of the short designation define the encoder type. This is followed by the encoder resolution.

In the case of DRIVE-CLiQ encoders, the information is given in bits with the trailing identifier "DQ", "DQI" or "DQC".

For encoders without a DRIVE-CLiQ interface, the analog resolution follows in signals per revolution with the identifier "S/R".

Encoder type
AM	Multi-turn absolute encoder
AS	Single-turn absolute encoder
IC	Incremental encoder sin/cos with commutation position (C/D track)
R	Resolver
Encoder resolution
□□DQ,	For encoders with DRIVE-CLiQ interface
□□DQI,	Resolution = □□ bit
□□DQC	=2□□ signals per revolution
	For encoders without DRIVE-CLiQ interface
□□□□S/R	Resolution = □□□□ signals per revolution

Paint finish

All motors can be painted over with commercially available paints. Up to 2 additional paint coats are permissible.

Holding brake

Many drives require a holding brake with an EMERGENCY STOP function for safety-related reasons or to comply with process requirements.

The brakes that are used operate according to the closed-circuit principle. A spring or permanent magnet exerts a tensile force on the brake armature disk, i.e. in a zero current state, the brake is closed and the motor shaft is held.

An electric current that flows through a coil generates an opposing field that counteracts the force effect of the spring or permanent magnet and releases or holds open the brake.

Only a limited number of braking operations can be performed for an EMERGENCY STOP or voltage failure without causing excessive wear on the holding brake.

The holding brake is not an operational brake.

Regular dynamic braking leads to increased wear and premature brake failure. In order to ensure the functionality and specification of the brake, neither the total operating energy nor the maximum operating energy per braking operation may be exceeded.

The brake control is already fully integrated into the SINAMICS S120 converter system, so that an external circuit is not necessary.