7-14
7-4 Manual Tuning
Adjustment Functions
7
7-4 Manual Tuning
Basic Settings
As described before, the OMNUC G-Series Servo Drives have an autotuning function. Depending
on load conditions or other restrictions, however, readjustment may be required if the gain cannot
be properly adjusted when normal mode autotuning is performed or the optimum responsiveness
or stability is required to match each load. This section describes how to perform manual tuning for
each control mode and function.
Before Manual Setting
The Parameter Unit can be used to adjust the Servomotor (machine) while monitoring the operation
or noise, but more reliable adjustment can be performed quickly by using waveform monitoring with
the data tracing function of CX-Drive or by measuring the analog voltage waveform with the monitor
function.
Analog Monitor Output
The actual Servomotor speed, command speed, torque, and number of accumulated pulses can be
measured in the analog voltage level using an oscilloscope or other device. Set the type of signal
to be output and the output voltage level by setting the Speed Monitor (SP) Selection (Pn007) and
Torque Monitor (IM) Selection (Pn008). For details, refer to Parameter Tables on page 5-61.
CX-Drive Data Tracing
Commands to the Servomotor and Servomotor operation (e.g., speed, torque commands, and
position deviation) can be displayed on a computer as waveforms. Refer to the CX-Drive Operation
Manual (Cat. No. W453).
1k
Ω
1k
Ω
G
IM
SP
COM
X10
3
2
1
0
ADR
AC SERVO DRIVE
X1
6
7
8
9 0 1 2
3
4
5
RS-232 connection cable
Connect to CN3.
