7 Advanced Settings
7 - 38
High-function General-purpose Inverter RX2 Series User’s Manual
Parameter
Table (1)Encoder constant-setup sets up the actual number of pulses of the encoder based on the ter-
minals to be used.
Table (2) encoder phase sequence selection is set up in accordance with the encoder’s phase
sequence.
When [CA-90] = 02, the main-body speed feedback is enabled while [CA-90] ≠ 02, PG option unit
speed feedback is enabled.
Item Parameter Data Description
Default
data
Encoder constant
setting
[CA-81] 0 to 65535(pls) Setting the encoder constant 1024
Encoder position
selection
[CA-82]
00 Phase-A is leading.
00
01 Phase-B is leading.
Motor gear ratio
Numerator
[CA-83] 1 to 10000
Setting the numerator of the gear ratio of a
motor.
1
Motor gear ratio
Denominator
[CA-84] 1 to 10000
Setting the denominator of the gear ratio of a
motor.
1
Pulse train detec-
tion object
selection
[CA-90]
00 PCNT function
00
01 Command
02 Control with speed feedback
03 Pulse count
Mode selection of
pulse train input
[CA-91]
00 MD0: 90-degree phase difference pulse train
00
01
MD1: Forward-backward rotation command +
pulse train
02
MD2: Forward-rotation pulse train + back-
ward-rotation pulse train.
Encoder constant
setting
[ob-01] 0 to 65535(pls) Setting the encoder constant 1024
Encoder position
selection
[ob-02]
00 Phase-A is leading.
00
01 Phase-B is leading.
Motor gear ratio
Numerator
[ob-03] 1 to 10000
Setting the numerator of the gear ratio of a
motor.
1
Motor gear ratio
Denominator
[ob-04] 1 to 10000
Setting the denominator of the gear ratio of a
motor.
1
Pulse train detec-
tion object
selection
[ob-10]
00 Command
00
01 Pulse train position command
Mode selection of
pulse train input
[ob-11]
00 MD0: 90-degree phase difference pulse train
01
01
MD1: Forward-backward rotation command +
pulse train
02
MD2: Forward-rotation pulse train + back-
ward-rotation pulse train.
Encoder’s Setting Table
Setting description
Terminals [A] and [B] of main
body
Terminals [EAP], [EBP], [EAN],
and [EBN] of PG Option Unit
(1) Encoder constant setting [CA-81] [ob-01]
(2) Encoder position selection [CA-82] [ob-02]
(3) Motor gear ratio Numerator [CA-83] [ob-03]
(4) Motor gear ratio Denominator [CA-84] [ob-04]
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