Omron R88D-KN01H-ECT-L, Руководство пользователя

Страница: 120 / 626

3 Specifications
3 - 44
G5-series Linear Motors/Servo Drives With Built-in EtherCAT Communications
Ironless Linear Motors have one PTC thermistor in its Motor Coil Unit.
This PTC thermistor has a characteristic that the resistance increases suddenly at around 110
º
C.
Utilize this characteristic to build a circuit to stop the motor in case of overheating.
Be sure to build a circuit that detects overheating at a resistance at around 90
º
C to 100
º
C, so that the
maximum coil temperature 110
º
C allowed for the Motor Coil Unit is not exceeded.
Ironless Linear Motors also have another NTC thermistor for measuring the average Motor Coil Unit
temperature.
z
PTC
Note 1 The resistance value in a low temperature range is approximately 50
Ω
.
2 The resistance value increases gradually when the temperature is at over 90ºC.
3 The temperature detected by a PTC thermistor has an error of approximately ±10ºC. Take this error into
account and use the motor at or lower than the maximum temperature allowed for the Motor Coil Unit. The
upper limit temperature is 110ºC.
z
NTC
Note The temperature value has an error of ±7 to ±10ºC.
3-3-8 Temperature Sensor Specifications of Ironless Linear Motors
0
1,000
2,000
3,000
4,000
5,000
6,000
85 90 95 100 105 110 115
Coil Temperature [°C]
Resistance [Ω]
0
1,000
2,000
3,000
4,000
5,000
40 50 60 70 80 90 100 110 120 130
Coil Temperature [°C]
Resistance [Ω]