Yaskawa MP940 - Manual (Page 158)

4.7 SVA Function
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4.7 SVA Function
This section explains the SVA function.
4.7.1 Overview
The MP940 Module uses a bus connection to an SGDH SERVOPACK servo connector, and
controls one servo axis via shared memory.
Consequently, to control the SGDH SERVOPACK, the MP940 Module exchanges data,
such as speed control, encoder pulse inputs, etc., via shared memory instead of using analog
voltages, as was previously done.
4.7.2 Separate and One-unit Systems
„ Separate Systems
In a separate system, the Controller and SERVOPACK are connected using a special cable to
control the analog voltage output, and the encoder pulse and other information is fed back.
PWM
M
PG
Controller
Motion control
Voltage
reference
Encoder
pulse
Special cable
SERVOPACK
Torque
reference
S
peed cont
rol
C
ont
rol curren
t
Counter
Servomotor
Encoder