Description Of Specific Functions 187
V560 Series High Performance Closed-Loop Vector Inverter User Manual
Fb.2.22 PG speed shaft
propulsion distance per revolution
Setting range:
0.001~50.000mm
Factory default:
0.500
This parameter is set the liner displacement of the transmission structure for each revolution of PG speed
shaft. The accumulative displacement is shown in the monitoring parameter d1.2.20.
Fb.2.23 Servo control function Setting range: 0000~0012 Factory default: 0000
_ _ _ X: Function selection
0: Void – servo control void, and running in the speed or torque control mode.
1: Effective – must be in the closed-loop vector control mode.
2: External terminal selection (Function No. 69).
The closed-loop vector control mode must be selected for this function, and the selection will not be effective
until the inverter has completely stopped.
_ _ X _ : Action mode
0: Common mode
1: Spindle orientation
Fb.2.24 Position setting source in
common mode
Setting range: 0~5 Factory default: 1
Fb.2.25 Position digit setting (lower) Setting range: 0~65535 Factory default: 0
Fb.2.26 Position digit setting (upper) Setting range: 0~500 Factory default: 0
This group of parameters is used to define the position command source in the mode of common serve
control.
When the analog setting is used to set the position, the maximum analog input is corresponding to 5000
pulse commands.
When digital setting ([Fb.2.24] = 2) is selected as the position setting source, Fb.2.25 and Fb.2.26 are used
to set the command position.
Fb.2.27 Electronic gear (numerator) Setting range: 0~65535 Factory default: 1000
Fb.2.28 Electronic gear (denominator) Setting range: 0~65535 Factory default: 1000
The electronic gear is used to transform the command pulse to the amount of movement. If the encoder is
set to A (pulse per revolution), the displacement per revolution of the motor is B, and the pulse command unit
is C, then the electronic gear can be calculated as below:
Electronic gear = 4AC/B
The numerator and denominator can be figured out after approximating the common divider.
For example, the encoder of a certain transmission is 1000 lines (A=1000), and motor displacement per
revolution is 2 mm (B=2), and the pulse command unit is 1 um (C=0.001m), then the electronic gear is 4AC/B
= 4000*0.001/2 = 2/1. Hence, the numerator and the denominator for the electronic gear is respectively 2
and 1.
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