Hitachi SJ Series User Manual page 252

Chapter 12
12.9.17 Use encoder
Ｑ
• To set up the encoder when the revolution-speed
feedback of a motor is used.
Ａ
• In SJ-P1, the control with sensor and the absolute
position control can be conducted by inputting the
feedback from the motor into the controller circuit
terminal table of the main body or into the feedback
option P1-FB.
Parameter
Item
Encoder constant set-up
Encoder phase sequence
selection
Motor gear ratio's numerator
Motor gear ratio's denominator
Pulse train input (main body)
detection target selection
Pulse train input (main body)
mode selection
Encoder constant set-up (P1-FB)
Encoder phase sequence
selection (P1-FB)
Motor gear ratio's numerator
(P1-FB)
Motor gear ratio's denominator
(P1-FB)
Pulse train input SA/SB (P1-FB)
detection target selection
Pulse train input SA/SB (P1-FB)
mode selection
！
• When [CA-90] ≠ 00, Input terminals [A] and [B] of
the main body are switched to the terminals for
feedback control.
• When [CA-90] = 02, the control with sensor and the
absolute position control are possible with Input
terminals [A] and [B].
• When [CA-90] ≠ 02, the control with sensor and the
absolute position control are possible with
terminals [EAP], [EBP], [EAN], and [EBN] of the
feedback option P1-FB.
• To conduct the pulse train position control, terminals
[SAP], [SBP], [SAN], and [SBN] of the feedback
option P1-FB are used.
• When the feedback option P1-FB was once set in a
slot and was removed later, a trip occurs with a
feedback option connection error [E112].
• Trips are triggered by an encoder disconnection
error [E100] by setting switches on the feedback
option P1-FB. For more details, see the instruction
manual of P1-FB.
Parameter Data
[CA-81] 0~65535(pls)
00
[CA-82]
01
[CA-83] 1~10000
[CA-84] 1~10000
00
01
[CA-90]
02
03
00
[CA-91] 01
02
[ob-01] 0~65535(pls)
00
[ob-02]
01
[ob-03] 1~10000
[ob-04] 1~10000
00
[ob-10]
01
00
[ob-11] 01
02
12-9-35
Inverter Function
Description
Setting the encoder constant
Phase-A is leading.
Phase-B is leading.
Setting the numerator of the gear
ratio of a motor.
Setting the denominator of the gear
ratio of a motor.
PCNT function
Command
Control with speed feedback
Pulse count
MD0: 90-degree phase difference
pulse train
MD1: Forward-backward rotation
command + pulse train
MD2: Forward-rotation pulse train +
backward-rotation pulse train.
Setting the encoder constant
Phase-A is leading.
Phase-B is leading.
Setting the numerator of the gear
ratio of a motor.
Setting the denominator of the gear
ratio of a motor.
Command
Pulse train position command
MD0: 90-degree phase difference
pulse train
MD1: Forward-backward rotation
command + pulse train
MD2: Forward-rotation pulse train +
backward-rotation pulse train.