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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.
2.4 Examples of Standard Connections between SERVOPACKs and Peripheral Devices
ޓ
S
ERVOPACK
S
ervomotor Main
Circuit Cable
S
erial Converter
Unit Cable
*
S
erial
Converter Unit
*
External
Encoder Cable
*
External encoder (Not
provided by Ya
s
kawa.)
Fully-clo
s
ed Module