Motor assy 9904 120 52401
94-09-28
01-01-04
75-05-23 01-02-19
RvZ
01-12-21
RvZ
Supers. Sheet. 190-1 15
Name. R.v. Zeelst Date. 98-06-02
File. 9904 120 52401 190.wpd Check.
PRODUCT SPECIFICATION FOR
DC MOTOR
MODEL: 4 Watt
TYPE: 9904 120 52401---9904 120 52711
1. Type indication
1.1 Spark suppression Varistor
1.2 Direction of rotation Reversible
1.3 Rotor Ironcore
1.4 Nominal data: See sheet 4&5
2. Electrical data of motor
2.1 Terminal resistance motor 9904 120 524.. 3.6 ± 8%
2.2 Terminal resistance motor 9904 120 526.. 15.0 ± 8%
2.3 Terminal resistance motor 9904 120 527.. 58.0 ± 8%
2.4 EMF at 3000 rpm of motor 9904 120 524.. 4.38 V ± 10%
2.5 EMF at 3000 rpm of motor 9904 120 526.. 9.40 V ± 10%
2.6 EMF at 3000 rpm of motor 9904 120 527.. 18.79 V ± 10%
3. Thermal data
3.1 Temperature coefficient of:
3.1.1 Motor EMF -0.2 %/K
3.1.2 Resistance +0.4 %/K
3.2 Thermal resistances:
3.2.1 From winding to housing (Rht1) 30 K/W
3.3 Thermal time constant of motor 30 min
without heatsing
4. Electromechanical data
4.1 No load See sheet 4&5
4.2 Starting torque 1 V (max.)
4.3 Loaded See sheet 4&5
4.4 Typical curves See sheet 6 to15
4.5 Insulation resistance between
winding and housing according
to IEC 335-1 (500 VDC) >2M
Motor assy 9904 120 52401
94-09-28
01-01-04
75-05-23 01-02-19
RvZ
01-12-21
RvZ
Supers. Sheet. 190-2 15
Name. R.v. Zeelst Date. 98-06-02
File. 9904 120 52401 190.wpd Check.
5. Mechanical data
5.1 Dimensions See sheet 112-1
5.2 Axial play 0.2 - 0.5 mm
5.3 Wobble of the shaft -
5.4 Weight 125 g
5.5 Housing Acetal
5.6 Operation position All positions permitted
5.7 Brushes Carbon
5.8 Bearings Slide
5.9 Connections Solder tags
6. General specifications
Unless otherwise specified general requirements are specified in reference sheet PN40-01-98
7. Temperatures
7.1 Ambient -10 to 60 °C
7.2 Storage -30 to 80 °C
8. Remarks
If not otherwise specified, the measurements have to be done under the following conditions
8.1 Motor temperature 22 ±5 °C
8.2 Atmospheric pressure 860 - 1060 HPa
10.3 Relative humidity 45 - 75 %
10.4 Radial force None
10.5 Axial force None
Motor assy 9904 120 52401
94-09-28
01-01-04
75-05-23 01-02-19
RvZ
01-12-21
RvZ
Supers. Sheet. 190-3 15
Name. R.v. Zeelst Date. 98-06-02
File. 9904 120 52401 190.wpd Check.
9 Limiting values
9.1 The following maximum values can be applied continuously, however they reduce the life of the motor
considerably.
9.1.1 Voltage 1,2 x Vnom.
9.1.2 Load 2 x Loadnom.
9.1.3 Current 2 x Inom.
9.1.4 Speed 1.2 x Nnom.
9.1.5 Output power 3 W
9.1.6 Radial force See sheet 4&5
9.1.7 Axial force See sheet 4&5
9.2 The following maximum values should never be exceeded
9.2.1 Winding temperature 130 °C
10. Life
10.1 Conditions for life
10.1.1 Voltage Nominal
10.1.2 Load Nominal
10.1.3 Radial force None
10.1.4 Axial force None
10.1.5 Motor position Horizontal
10.1.6 Addition of lubricant Not permitted
10.1.7 Cycle Continuous
10.2 Life B10 value > 1000 h
10.3 Criteria for approval: Motor function remains intact.
If the Warning signal level (see below) is reached in the life test setup, the
motor is regular tested for the criteria 10.3.1 to 10.3.3 that prescribe when
motor life is finished.
Warning signal: The motor is build out from the life test setup if as warning signal the motor
current deviates ± 20% of the initial zero hour value or the audible noise is
dramatically increased or if significant interruptions occur in the commutation
wave form.
10.3.1 Commutation wave form No blocked interruptions;
Motor should start up in all rotor positions with
motor voltage of item 4.2
10.3.2 No load current 2 times the max. no load current of sheets 190-4
and5 10.3.3 Bearings Bearing function remains intact
