Data Setting - Hitachi SJ-FB Instruction

Main Motor
(Note) : Please connect EG5 of the main and sub inverter together to avoid
malfunction caused by EMC noise.

7.3.3 Data setting

Data setting related to position control
Setting item
Feed-forward gain
(Note 1)
Position loop gain (Note 2)
Electronic gear position
selection (Note 3)
Numerator of the electronic
gear ratio (Note 3)
Denominator of the electronic
gear ratio (Note 3)
Completion range setting
Completion delay time
(Note 1) : We promote the adjustment from P022=2.00 at the time of the feed forward gain
adjustment .To make the position deviation of the main and sub motor small, then
increase feed forward gain. When the motor is unstable, then decrease feed forward
gain
(Note 2) :We promote the adjustment from P023=2.00 at the time of the position loop gain
adjustment. To get good accuracy of the position control then increase posotion loop
gain, then to get much power to maintain the positioning then increase posotion loop
gain. Motor is unstable due to too big position loop gain, then decrease position loop
gain.
Master Inverter
AP,BP
AN,BN
EG5
EAP,EBP
EAN,EBN
M
EC
Figure 7-3 Wiring for Synchronized Operation
Function code
P022
P023
P019
P020
P021
P017
P018
Chapter 7
Slave Inverter
SAP,SBP
SAN,SBN
EG5
EAP,EBP
EAN,EBN
Sub Motor
M
EC
Setting range, setting contents
0.00∼99.99 / 100.0∼655.3
0.00∼9.99 / 100.0 (rad/s)
00: to the feed back side (FB)
01: to the position command side (REF)
1∼9999
1∼9999
0∼9999. / 1000 (10,000) (pulse)
0.00∼9.99 (s)
27
FUNCTIONS