YASKAWA E-V Series User Manual page 147

5 Operation
5.5.2 Adjustment of Reference Offset
Step
1
2
3
4
5
6
7
Note: The automatic adjustment of reference offset (Fn009) cannot be used when a position loop has been formed with the
host controller. In this case, use the manual servo tuning of force reference offset described in (2) Manual
Adjustment of Reference Offset.
(2) Manual Adjustment of Reference Offset
This mode adjusts the offset by inputting the amount of force reference offset directly.
Manual servo tuning of the force reference offset (Fn00B) is used in the following cases.
• If a loop is formed with the host controller and the error is zeroed when servolock is stopped.
• To deliberately set the offset to some value.
• To check the offset data that was set in the automatic adjustment mode of the force reference offset.
The offset adjustment range and setting units are as follows:
Offset setting unit
5-44
Display after
Operation
MODE/SET
MODE/SET
MODE/SET
MODE/SET
MODE/SET
Force reference
Offset adjustment
range
Keys
Turn OFF the servo ON (S/_ON) signal, and input the 0 V
reference voltage from the host controller or external cir-
cuit.
Host
controller
Press the MODE/SET Key to select the utility function
mode.
DATA/
Press the UP or the DOWN Key to select Fn009.
DATA/
Press the DATA/SHIFT Key for approximately one sec-
ond. "rEF_o" is displayed.
DATA/
Press the MODE/SET Key.
The reference offset is automatically adjusted.
DATA/
When completed, "donE" blinks for approximately one
second.
After "donE" is displayed, "rEF_o" is displayed again.
Press the DATA/SHIFT Key for approximately one sec-
ond. "Fn009" is displayed again.
DATA/
Offset Adjustment Range: - 128 to +127
(Force reference: -1881.6 mV to +1866.9 mV)
Analog
Offset Setting Unit
input
Force reference: 1 = 14.7 mV
voltage
Description
SERVOPACK
Linear servomotor
0 V force
reference
Small movement
Servo OFF
(Servo ON)