14.2
Limit Switch Specifications
Type
Hall sensor
Supply voltage
+5 V
Signal output
0 V / +5 V (TTL level)
Signal logic
N/C contact, NPN
Figure 11: L-412 at the negative limit switch.
Figure 12: L-412 at the positive limit switch.
14.3
PTC Temperature Sensor
The L-412.xx9232 is equipped with a PTC temperature sensor to prevent the motor from
overheating. The electrical resistance of the PTC temperature sensor increases considerably
into the critical temperature range. The controller must cut the power supply to the motor
(switching threshold) when the critical temperature is reached.
Temperature
Electrical resistance
Up to 150°C
< 550 Ω
155°C (critical temperature)
1000 Ω (switching threshold)
More than 155°C
> 1330 Ω
14.4
Commutation Encoder
The L-412.xx9232's motor has a commutation encoder that codes the position of the magnets
in the same way as a Hall effect sensor.
14 APPENDIX
L412M0006EN
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3/14/2019
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