Hiwin HM-S, Руководство по сборке

Страница: 18 / 100

18
Options of the HM-S linear modules and HT-S linear tables
Assembly Instructions
Linear Axes HM-S and HT-S
HMS_HTS-01-0-EN-1905-MA
4.4.2 Limit switch specifications
Properties N/C contact (25-000786) N/C contact (25-000787) N/O contact (25-000788)
Housing Rectangular
Dimensions (W × H × D) 8 × 8 × 40 mm
Max. sensing range 2 mm
Switching frequency 2,000 Hz
Connection type Cable with M8, 3-pin plug,
100 mm
Cable, 3-wire, 4 m Cable, 3-wire, 5 m
Output type PNP
Electrical wiring DC 3-wire
Protection class IP67, IP68 1)
1) According to EN 60529
Table 4.2 General features of the limit switches
Mechanics/electronics N/C contact (25-000786) N/C contact (25-000787) N/O contact (25-000788)
Supply voltage 10 to 30 VDC
Ripple
≤
10 % 1)
Voltage drop
≤
2 V 2)
Current consumption
≤
10 mA 3)
Time delay before availability
≤
100 ms
Hysteresis 5 to 15 %
Repeatability
≤
2 % 4)
Temperature drift ±10 %
EMC According to EN 60947-5-2
Continuous current I
a
≤
200 mA
Cable material PVC
Short-circuit protection Yes
Reverse polarity protection Yes
Power-up pulse protection Yes
Shock and vibration resistance 30 g, 11 ms/10 to 55 Hz, 1 mm
Ambient operating temperature –25 °C to +75 °C
Housing material Plastic, VISTAL ®
Sensing face material Plastic, VISTAL ®
UL-File-No. (certificate) NRKH.E348498
1)
Of U
v
2)
At I
a
max.
3)
Without load
4)
At constant voltage and temperature
Table 4.3 Mechanics/electronics of the limit switches
4.5 Positioning measuring system
If the accuracy of the linear axis, delivered through the drive element and the encoder signal of the servo drive, is not
sufficient for the application, a direct positioning measuring system can be used to increase positioning accuracy and
repeatability. The positioning measuring system is an external component located on the side of the carriage and enables
a repeatability of ±0.01 mm for spindle axes. The encoder housing is electrically shielded. The output signals can be either
analogue or digital.
The HIWIN-MAGIC positioning measuring system consists of the encoder (Fig. 4.4) and the magnetic scale (Fig. 4.5) as the
measurement standard. It is assembled prior to delivery.