YASKAWA E-7S SERVOPACK SGD7S - Fully-Closed System

10.1 Fully-Closed System
10-2
10.1 Fully-Closed System
With a fully-closed system, an externally installed encoder is used to detect the position of the
controlled machine and the machine’s position information is fed back to the SERVOPACK.
High-precision positioning is possible because the actual machine position is fed back directly.
With a fully-closed system, looseness or twisting of mechanical parts may cause vibration or
oscillation, resulting in unstable positioning.
Refer to the following manual for details on Fully-closed Modules.
Σ-7-Series Peripheral Device Selection Manual (Manual No.: SIEP S800001 32)
The following figure shows an example of the system configuration.
* The connected devices and cables depend on the type of external linear encoder that is used.
Note: Refer to the following section for details on connections that are not shown above, such as connections to
power supplies and peripheral devices.
Duct-ventilated SERVOPACKs on page 2-25
SERVOPACK
Servomotor Main
Circuit Cable
Serial Converter
Unit Cable*
Serial Converter
Unit*
External
Encoder Cable*
External encoder (Not
provided by Yaskawa.)
Fully-closed Module