YASKAWA SGDV User Manual page 99

(1) Automatic Adjustment of Reference Offset (Fn009)
The automatic adjustment of reference offset measures the amount of offset and adjusts the reference voltage
automatically. After completion of the automatic adjustment, the amount of offset measured is saved in the
SERVOPACK.
The servomotor power must be OFF when automatically adjusting the reference offset.
Note: The adjusted value is not initialized by executing the Fn005 function (Initializing Parameter Settings).
Preparation
The following conditions must be met to adjust the offsets of speed or torque analog reference automatically.
• The write prohibited setting parameter (Fn010) must be set to Write permitted (P.0000).
• The servomotor power must be OFF.
Operating Procedure
Adjust the reference offset automatically with the digital operator using the following steps.
Step Display after Operation
B B
U n 0 0 0 = 0 0 0 0 0 0
1
U n 0 0 2 = 0 0 0 0 0 0
U n 0 0 8 = 0 0 0 0 0 0 0 0 0 0 0
U n 0 0 D = 0 0 0 0 0 0 0 0 0 0 0
B B
F n 0 0 8 : M t u r n C l r
2
F n 0 0 9 : R e f A d j
F n 0 0 A : V e l A d j
F n 0 0 B : T r q A d j
B B
R e f A d j u s t
3
S t a r t
R e t u r n : [ S E T ]
B B
R e f A d j u s t
4
S t a r t
R e t u r n : [ S E T ]
Note: The automatic adjustment of reference offset (Fn009) cannot be used when a position loop has been formed with a
host controller. Use the manual adjustment of reference offset described in (2) Manual Adjustment of Reference Off-
set (Fn00A).
Keys
− P R M / M O N −
−
− F U N C T I O N −
: [ D A T A ]
or
: [ D A T A ]
5.3 Speed Control (Analog Voltage Reference)
Operation
Turn OFF the servo ON signal (/S-ON), and input the 0-V
reference voltage from the host controller or external cir-
cuit.
SERVOPACK
0-V speed
Host
reference
controller
Servo OFF
Press the Key to view the main menu of the utility
function mode. Use the or
through the list and select Fn009.
Press the Key. The display changes to the Fn009
execution display.
Press the Key to execute the automatic adjustment
of analog voltage reference (speed or torque) offset.
"DONE" is displayed during the processing, and "BB" is
displayed at the completion.
Press the Key not to execute the automatic adjust-
ment. The display returns to the main menu of the utility
function mode.
Servomotor
Slight rotation
(Servo ON)
Key to move
5
5-19