Maintenance Manual SP 40
Rev. 005
122
Chapter 7
Electromechanical Devices
7.2 CARRIAGE MOTOR
Electrical phase resistance 0.84 Ω ± 15% measured at 25°C.
Phase inductance 2 mH ± 20%
Measured at 1 KHz, 100 mVpp with energized coil. Each coil should be within the tolerance range, independently of
the detent position.
Rated motor voltage 2.1 V
With rated voltage applied to both phases (parallel), the coils reach the limit of insulation class with motor in air and
ambient temperatur 25°C.
Rated phase current 2.5 A
With rated phase current applied to both phases (parallel), the coils reach the limit of insulation class with motor in air
and ambient temperature 25°C.
Insulation Class B
Insulation classification is in accordance with IEC publication 85, the coils maximum temperature is 120°C.
Coil temperature is measured using the resistance method.
Insulation Resistance 100 MΩ with 550 Vdc.
Insulation Voltage 500 Vac. 1 minute
Fig. 7.5 - Carriage Motor layout
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