34
Winding diameter compensation
function
3.8.3
Setting at driving shaft (Pr. 762, Pr. 773, Pr. 774, X56 signal)
(1) Winding/unwinding selection with parameter
(Pr. 762)
Select whether driving roll is a winding shaft or unwinding shaft.
(Initial winding diameter of winding shaft is the minimum diameter, initial winding diameter of unwinding shaft is the
maximum diameter.)
(2) Winding/unwinding selection by external terminal input (X56 signal)
When
X56 is assigned to any input terminal
(Pr. 178 to Pr. 189)
, the setting in
Pr. 762
becomes disabled,
and winding/
unwinding shaft is selected by the ON/OFF of input terminal.
(3) Gear ratio calculation
(Pr. 773, Pr. 774)
Set a gear ratio when a reduction gear is installed between the driving shaft and motor shaft.
Gear ratio calculation
Pr. 762 Winding/unwinding selection
Winding/unwinding
0
Winding
1
Unwinding
X56 signal
Winding/unwinding
ON
Winding
OFF
Unwinding
Parameter
Number
Name
Setting Range
Increments
Initial Value
773
Gear ratio numerator (driver side)
1 to 65534
1
1
774
Gear ratio denominator (follower
side)
1 to 65534
1
1
Gear ratio Z =
Pr. 773
Pr. 774
POINT
Set the gear ratio accurately.
The gear ratio is recommended to be in the range of 1/50 to 1/20.
