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17. APPLICATION OF FUNCTIONS
17 - 69
17.3.3 How to use scale measurement function
(1) Selection of scale measurement function
The scale measurement function is set with the combination of basic setting parameters [Pr. PA01] and
[Pr. PA22].
(a) Operation mode selection
The scale measurement function can be used during semi closed loop system (standard control
mode). Set [Pr. PA01] to "_ _ 0 _".
Operation mode selection
[Pr. PA01]
10 0
Semi closed loop system
(Standard control mode)
Setting value
0
Operation mode
Servo motor-side
resolution unit
Control unit
(b) Scale measurement function selection
Select the scale measurement function. Select "1 _ _ _" (Used in absolute position detection system)
or "2 _ _ _" (Used in incremental system) according to the encoder you use.
Scale measurement function selection
0: Disabled
1: Used in absolute position detection system
2: Used in incremental system
000
[Pr. PA22]
(2) Selection of scale measurement encoder communication method and polarity.
For MR-J4-_B_-RJ servo amplifiers, set the following "Load-side encoder communication method
selection" of [Pr. PC26] as necessary.
The communication method differs depending on the scale measurement encoder type. For the
communication method for using a linear encoder as scale measurement encoder, refer to "Linear
Encoder Instruction Manual". Select "Four-wire type" because there is only four-wire type for
synchronous encoder.
Select the cable to be connected to CN2L connector in [Pr. PC26].
00
[Pr. PC26]
Load-side encoder cable communication method selection
0: Two-wire type
1: Four-wire type
When using an encoder of A/B/Z-phase differential output method, set "0".
Incorrect setting will trigger [AL. 70] and [AL. 71].
Setting "1" while using an MR-J4-_B_ servo amplifier will trigger [AL. 37].
0