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5 Operation
5.3.2 Reference Offset Adjustment
5-24
(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.
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 reference automatically. The message
“NO-OP” indicating that the settings are not appropriate will be displayed, if the following conditions are not
met.
• The write prohibited setting parameter (Fn010) mu
st be set to Write permitted (P.0000).
• The servomotor power must be OFF.
Operating Procedure
Adjust the reference offset automatically with the panel operator using the following steps.
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).
The servomotor power must be OFF when automatically adjusting the reference offset.
Step
Display after Opera-
tion
Keys Operation
1
Turn OFF the servo ON signal (/S-ON), and input the 0-V
reference voltage from the host controller or external cir-
cuit.
2 Press the MODE/SET Key to select the utility function.
3 Press the UP or the DOWN Key to select
Fn009.
4
Press the DATA/SHIFT Key for appro
ximately one second.
"rEF_o" is displayed.
5
Press the MODE/SET Key.
After "donE" flashes for ap
proximately one second,
"rEF_o" is displayed again.
6
Press the DATA/SHIFT Key for appro
ximately one second.
"Fn009" is displayed again.
SERVOPACK
Servo OFF
0-V speed
reference
Host
controller
Servomotor
Slight movement
(Servo ON)
MODE
SET
DATA
MODE
SET
DATA
MODE
SET
DATA
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