YASKAWA SGDV SERVOPACK, User Manual

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5.4 Position Control
5-43
5
Op
er
at
io
n
(4) Output Signal Setting
This output signal indicates when the multiplier of the input reference pulse has been switched for the Refer-
ence Pulse Input Multiplication Switching Input signal (/PSEL).
Note: Use parameter Pn510.2 to allocate the /PSELA signal for use. For details, refer to 3.3.2 Output Signal Allocations .
(5) Restriction
When using the following utility functions, the reference pulse input multiplication switching function is dis-
abled.
5.4.4
Electronic Gear
The electronic gear enables the workpiece travel distance per reference pulse input from the host controller.
The minimum unit of the position data moving a load is called a reference unit.
Note: If the multiplier of the input reference pulse is switched, the input reference pulse from the host controller will be
multiplied by n and defined as the reference unit of the position data. ("n" is the multiplier of the reference pulse.)
The number of divisions on the serial converter unit: 256
(1) Electronic Gear Ratio
Set the electronic gear ratio using Pn20E and Pn210.
Type
Signal
Name
Connector
Pin Number
Setting Meaning
Output
/PSELA Must be allocated
ON (closed) The multiplier of the input reference pulse is enabled.
OFF (open) The multiplier of the input reference pulse is disabled.
Parameter No. Function
Fn004 Program JOG operation
Fn201
Advanced autotuning
When the Electronic Gear is Not Used
When the Electronic Gear is Used
To move a workpiece 10 mm To move a workpiece 10 mm using reference units
Linear scale Linear scale
Reference unit: 1
μ
m
Linear
The scale pitch is 20

m. Therefore,
10

1000 20

256=128000 pulses
128000 pulses are input as reference
pulses.
The equation must be calculated at the
host controller.
÷
1 reference unit is 1

m.
To move a workpiece 10 mm (10000

m),
1 pulse = 1

m,
10000/1=10000 pulses.
Input 10000 pulses as reference input.
Pn20E
Electronic Gear Ratio (Numerator)
Classification
Setting Range Setting Unit Factory Setting When Enabled
1 to 1073741824 1 4 After restart Setup
Pn210
Electronic Gear Ratio (Denominator)
Classification
Setting Range Setting Unit Factory Setting When Enabled
1 to 1073741824 1 1 After restart Setup
Position
Position