Hitachi SJ Series User Manual page 253

Chapter 12 Chapter 12 Chapter 12
Encoder's setting table Encoder's setting table Encoder's setting table
Setting Setting
description description
Encoder Encoder
(1)
constant set-up constant set
Encoder oder
phase phase-sequence
(2)
selection selection
Encoder gear Encoder gear
ratio's ratio's
(3)
numerator numerator
Encoder's gear Encoder's gear
ratio's ratio's
(4)
denominator denominator
Ａ
• • Table (1)Encoder constant Encoder constant Encoder constant-setup sets up the actual
number of pulses of the encoder based on the number of pulses of the encoder based on the number of pulses of the encoder based on the number of pulses of the encoder based on the
terminals to be used. terminals to be used.
• • Table (2) encoder phase sequence selection is set encoder phase sequence selection is set encoder phase sequence selection is set encoder phase sequence selection is set encoder phase sequence selection is set
up in accordance with the encoder's phase up in accordance with the encoder's phase up in accordance with the encoder's phase up in accordance with the encoder's phase
sequence.
• • When [CA- -90] = 02, the main 90] = 02, the main-body speed feedback
90] ≠ 02, P1-FB speed
is enabled while [CA is enabled while [CA-90]
feedback is enabled. feedback is enabled.
Adjustment in cases where a gear exists between Adjustment in cases where a gear exists between cases where a gear exists between cases where a gear exists between
the motor and the encoder. the motor and the encoder. the motor and the encoder.
Ａ
• • When the encoder and the motor shaft are When the encoder and the motor shaft are When the encoder and the motor shaft are When the encoder and the motor shaft are
connected to each other by means of a gear, for connected to each other by means of a gear, connected to each other by means of a gear, connected to each other by means of a gear,
Tables (3) and (4) conversion is made possible by conversion is made possible by conversion is made possible by conversion is made possible by
setting up (3) (3) Encoder g Encoder gear-ratio's numerator/
encoder gear ncoder gear-ratio's denominator. ratio's denominator.
• • Set the values ( he values ((3)/(4)) so
between (1/50) to (20). between (1/50) to (20). between (1/50) to (20).
• An exemplar case where a gear is attached there. • An exemplar case where a gear is attached there. An exemplar case where a gear is attached there. An exemplar case where a gear is attached there. An exemplar case where a gear is attached there.
Gear Gear
(Load side/motor- (Load side/motor
Encoder
(1024pulse 1024pulse)
When the encoder's rotating rate for the motor's When the encoder's rotating rate for the motor's When the encoder's rotating rate for the motor's When the encoder's rotating rate for the motor's When the encoder's rotating rate for the motor's
standard encoder becomes 1/10 for 1 standard encoder becomes 1/10 for 1024 pulses, standard encoder becomes 1/10 for 1 standard encoder becomes 1/10 for 1
Table (1) (1) Encoder constant set Encoder constant set-up:
Table (3) (3): Encoder's gear ratio's numerator: 1. : Encoder's gear ratio's numerator: 1. : Encoder's gear ratio's numerator: 1. : Encoder's gear ratio's numerator: 1.
Table (4) (4): Encoder's gear ratio's denominator: 10 : Encoder's gear ratio's denominator: 10 : Encoder's gear ratio's denominator: 10 : Encoder's gear ratio's denominator: 10
Set up as above. Set up as above.
Terminals Terminals terminals terminals
[A] and [EAP], [EBP], [EAP], [EBP],
[B] of [EAN], and [EAN], and
main [EBN] of
body P1-FB.
[CA-81] [ob-01]
[CA-82] [ob-02]
[CA-83] [ob-03]
[CA-84] [ob-04]
setup sets up the actual setup sets up the actual
body speed feedback body speed feedback
FB speed
for
ratio's numerator/(4) (4)
) so as to be within a range as to be within a range as to be within a range
-side = 1/10)
024 pulses,
up: 1024 pulses 1024 pulses
！ ！
• When either [CA When either [CA When either [CA-82] or [ob
phase-A is leading, and wh phase A is leading, and wh A is leading, and when the operation is of
forward rotation, the phase of the phase forward rotation, the phase of the phase-A forward rotation, the phase of the phase forward rotation, the phase of the phase forward rotation, the phase of the phase
advances 90- advances 90
phase-B in a normal case. phase B in a normal case. B in a normal case.
• When either [CA When either [CA When either [CA-82] or [ob
phase-B is leading, and when the operation is of phase B is leading, and when the operation is of B is leading, and when the operation is of B is leading, and when the operation is of
forward rotation, the phase of the phase forward rotation, the forward rotation, the
advances 90- advances 90
phase-A in a normal case. phase A in a normal case. A in a normal case.
• To check if the encoder input into the main body or To check if the encoder input into the main body or To check if the encoder input into the main body or To check if the encoder input into the main body or To check if the encoder input into the main body or To check if the encoder input into the main body or
into P1-FB is correct, set [AA121] = 00, meaning into P1 FB is correct, set [AA121] = 00, meaning FB is correct, set [AA121] = 00, meaning FB is correct, set [AA121] = 00, meaning
V/f control (00), and check the monitor for the V/f control (00), and check the monitor for the V/f control (00), and check the monitor for the V/f control (00), and check the monitor for the V/f control (00), and check the monitor for the
[dA-08] frequen [dA 08] frequency detection values. The wiring is
correct if the forward operation [FW] has a positive correct if the forward operation [FW] has a positive correct if the forward operation [FW] has a positive correct if the forward operation [FW] has a positive correct if the forward operation [FW] has a positive correct if the forward operation [FW] has a positive
(+) value and if the reversal operation [RV] has a (+) value and if the reversal operation [RV] has a (+) value and if the reversal operation [RV] has a (+) value and if the reversal operation [RV] has a (+) value and if the reversal operation [RV] has a
negative (-) value. If it is incorrect, either revising negative ( ) value. If it is incorrect, either revising ) value. If it is incorrect, either revising ) value. If it is incorrect, either revising
the wiring or switching the corresponding encoder the wiring or switching the corresponding encoder the wiring or switching the corresponding encoder the wiring or switching the corresponding encoder the wiring or switching the corresponding encoder the wiring or switching the corresponding encoder
phase sequence selection [CA phase seque
Encoder's speed detection Encoder's speed detection Encoder's speed detection Encoder's speed detection
Ａ Ａ
• To acquire the frequency that was input through the To acquire the frequency that was input through the To acquire the frequency that was input through the To acquire the frequency that was input through the To acquire the frequency that was input through the To acquire the frequency that was input through the
encoder, the following settings are necessary. encoder, the following settings are necessary. encoder, the following settings are necessary. encoder, the following settings are necessary. encoder, the following settings are necessary.
- Set-up of Table up of Tables (1), (3), and
- Set-up of the number of motor poles up of the number of motor poles up of the number of motor poles up of the number of motor poles
* When the selected control mode [AA121] is the he selected control mode [AA121] is the he selected control mode [AA121] is the he selected control mode [AA121] is the he selected control mode [AA121] is the
induction motor control ([AA121] = 00 to 10), IM induction motor control ([AA121] = 00 to 10), IM induction motor control ([AA121] = 00 to 10), IM induction motor control ([AA121] = 00 to 10), IM induction motor control ([AA121] = 00 to 10), IM
motor's number of motor poles [Hb103] is set as motor's number of motor poles [Hb103] is set as motor's number of motor poles [Hb103] is set as motor's number of motor poles [Hb103] is set as motor's number of motor poles [Hb103] is set as
the number of motor poles. the number of motor poles. the number of motor poles.
Motor Motor
12-9-36 36
Inverter Function Inverter Function Inverter Function
82] or [ob-02] = 00, meaning that 02] = 00, meaning that 02] = 00, meaning that
en the operation is of
-degrees more than that of the degrees more than that of the degrees more than that of the
82] or [ob-02] = 01, meaning that 02] = 01, meaning that 02] = 01, meaning that
phase of the phase-B phase of the phase
-degrees more than that of the degrees more than that of the degrees more than that of the
cy detection values. The wiring is cy detection values. The wiring is
nce selection [CA nce selection [CA-82] or [ob 82] or [ob-02].
, and (4)