Electrical installation
Coreless linear motor AL3800
27
Version: 3.6
8.5.2
NTC Specification
The NTC sensor is used for temperature monitoring in the coil unit.
Specifications of the NTC sensor
Tolerance ΔR
R
/ ΔR
R
5 %
Max. Power
60 mW
T (ºC)
0
10
20
30
40
50
60
70
80
90
100
110
120
130
R
NTC
(Ω)
32650 19900 12490
8057
5327
3603
2488
1752
1258
918
680
511
389
301
8.6
Polarity test
NOTE
Protection of the linear servomotor
Before the test, make sure that the linear motor system has suitable electrical and mechanical protection.
Ensure that the count direction of the feedback matches the traversing direction of the motor. If this is the
case, the motor is connected correctly. If this is not the case, two phases (phases 1 and 3) of the motor
cable can be swapped, in order to correct the traversing direction.
All linear servomotors from Beckhoff are wired and connected in exactly the same way, so that a single test
is sufficient in order to determine the polarity of a motor/graduated rule combination. If more than one axis is
being constructed in a similar way, the polarity will be identical.
