8.5 Operating Using Speed Control with Analog Reference
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(1) Automatic Adjustment of the Speed Reference Offset
The automatic adjustment of reference offset (Fn009) cannot be used when a position loop has been formed with
a host controller and the error pulse is changed to zero at the servomotor stop due to servolock. Use the speed ref-
erence offset manual adjustment (Fn00A) described in the next section for a position loop.
The zero-clamp speed control function can be used to force the motor to stop while the zero speed reference is
given. Refer to
8.5.6 Using the Zero Clamp Function
.
The speed reference offset must be automatically adjusted with the servo OFF.
Adjust the speed reference offset automatically in the following procedure.
IMPORTANT
Step
Display after
Operation
Digital
Operator
Panel
Operator
Description
1
Turn OFF the SERVOPACK, and input the 0-V reference voltage
from the host controller or external circuit.
2
Press the DSPL/SET or MODE/SET Key to select the utility
function mode.
3
Press the LEFT/RIGHT or UP/DOWN Key, or UP or DOWN
Key to select parameter Fn009.
*The digit that can be set will blink.
4
Press the DATA/ENTER Key once, or DATA/SHIFT Key for
more than one second. “rEF_o” will be displayed.
5
Press the DSPL/SET or MODE/SET Key.
The reference offset will be automatically adjusted.
When completed, “donE” will blink for about one second.
6
About one second later
After “donE” is displayed, “rEF_o” will be displayed again.
7
Press the DATA/ENTER Key once, or DATA/SHIFT Key for
more than one second to return to the Fn009 display of the utility
function mode.
Servomotor
Slow rotation
(Servo ON)
SERVOPACK
Servo OFF
0-V speed
reference
Host
controller
DSPL
SET
(DSPL/SET Key)
MODE/SET
(MODE/SET Key)
DATA
ENTER
(DATA/ENTER
Key)
DATA/
(DATA/SHIFT Key)
(Press at least 1 s.)
DSPL
SET
(DSPL/SET Key)
MODE/SET
(MODE/SET Key)
DATA
ENTER
(DATA/ENTER
Key)
DATA/
(DATA/SHIFT Key)
(Press at least 1 s.)
Summary of Contents for SGDH
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