www.a-ts.cn A-TS Technology RT20
49
Press the Page down key and hold, the motor runs at JOG speed
(PA21) CCW.
5.5 Position control
Position control is applied in the systems require precise positioning,
such as CNC machine tools, textile machinery etc. The pulse command of
the control system is the position command source. The pulse inputs by the
PULS +/- and SIGN +/- input terminals.
Position
command source
and direction
Electronic
gear ratio
Position
command
filtering
Deviation
counter
Position
loop gain
Speed loop
control
Current
loop control
Speed feed
forward
Speed
calculation
Encoder
frequency
division output
M
Position
command
input
Frequency
division
output
Motor
Encoder feedback
+
+
-
+
-
Figure 5-3 Position control block diagram
5.5.1 Position control simple example
Wiring diagram for PLC Control
COM
7
SRV-ON 29
RT20 Servo Drive
DC
12-24V
CN3
U
V
W
U
V
W
Servo Motor
ENC
M
24v+
1
PULS-
4
24v+
2
SIGN-
6
Position command
PULS
Position command
SIGN
PE
50
Command cable
shielded ground
Servo enabled
(SON)
CN4/
CN5