24
PRODUcT DEScRIPTION
NOTICE
Voltage peaks when switching off!
Destruction of the holding brake!
If the excitation current of the holding brake is switched off on the DC
side, a voltage peak occurs which can be higher than 1000 V. It is caused
by the inductance of the holding brake. A varistor should be connected in
parallel to the coil to prevent this voltage peak.
On motors with plug connector and built-in brake, it is the user's respon-
sibility to install the varistor provided to control the brake.
U
+
-
Figure 3:
Varistor protective wiring
2.6.4 Speed and shaft position measuring system
The motors are equipped with a resolver, Sick Stegmann Hiperface Singleturn or Sick
Stegmann Hiperface Multiturn for speed and shaft position control.
WARNING
Adjustment of the measuring system!
Injuries due to uncontrolled motor reactions!
The measuring system of the synchronous motors is factory-adjusted to
the respective drive controller. Any mis-adjustment may lead to uncon-
trolled motor response or complete failure of the motor.
In order to avoid any risk, the motor must be put into operation only in
no-load operation, without connection to the system.
Summary of Contents for DYNAMIC LINE 4 SF-CF-SP30
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