Fully Closed Control; Fully Closed System Specifications - YASKAWA MECHATROLINK Sigma 2 Series User Manual

6 Parameter Setting and Functions

6.2.4 Fully Closed Control

6.2.4 Fully Closed Control

6.2.5 Fully Closed System Specifications

A fully closed loop can be formed using the parameter settings on the SGDH SERVOPACK.
In previous SERVOPACKs, a semi-closed method was used to control the motor, but with
this function even more precise control is achieved because control involves the detection of
the position and speed of actual machine operation.
Fully closed control
Torque
Servomotor
Load torque
Current
Detection
current
Parameters must be set when using fully closed control. Refer to 6.2.6 Parameter Settings
for details.
This section describes the fully closed system specifications of the SGDH SERVOPACK
when an NS115 is mounted.
Fully Closed Encoder Pulse Output Form
5-V Differential line driver output (complies with EIA Standard RS-422A)
Fully Closed Encoder Pulse Signal Form
90° Phase difference 2-phase differential pulse: phase A, phase B
Maximum receivable frequency for SERVOPACK: 1 Mbps
PhaseA
PhaseB
t1 t2 t3
Forward rotation
Mechanism in-
cluding back-
lash and friction
Controlled machine
t1, t2, t3, t4
t4
6-12
Speed and
position at the
Power
machine end
Speed,
position
≥ 0.2 µs
Reverse rotation