CPG Compuprint SP 40, Maintenance Manual

Page: 134 / 144

Maintenance Manual SP 40
Rev. 005
124
Chapter 7
Electromechanical Devices
7.4 SELECTOR MOTOR
Electrical phase resistance 7.5
Ω
± 10% measured at 25°C.
Phase inductance 12 mH ± 20%
Measured at 1 KHz, 100 mVpp with energized coil. Each coil should be within tolerance range, independently of the
detent position.
Rated motor voltage 3.75 V
With rated voltage applied to both phases (parallel), the coils reach the limit of insulation class with motor in air and
ambient temperature 25°C.
Rated phase current 0.5 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 M
Ω
with 550 Vdc.
Insulation Voltage 500 Vac. 1 minute
Fig. 7.7 - Selector Motor layout