Yaskawa G5 Electronic Line Shaft - Manual (Page 8)

Electronic Lineshaft with Registration
Date: 07/01/04, Rev: 04-07 Sheet 8 of 14 TM.G5SW.047
Ratio 2 Numer.
P2-01 = 1000
P2-01 Ratio 2 Numerator Q Q Q Q
A digital input to a terminal selected for Gear Ratio 2 (set value 81) will select parameters P2-01 and P2-02 as the
follower’s ratio of the master encoder signal. When this input is made, parameters P1-02 and P1-03 will be ignored.
See P1-02 for further information and an example.
Ratio 2 Denom.
P2-02 = 1000
P2-02 Ratio 2 Denominator Q Q Q Q
See P2-01.
Ratio Chg/Scan
P2-03 = 0.0010
P2-03 Ratio Change Per Scan Q Q Q Q
This parameter adjusts how quickly the gear ratio changes between ratio 1 and ratio 2.
Example: Assume that the ratio is being changed from 3/2 (ratio of 1.5:1) to 62/9 (ratio of 6.89:1). The ratio increases by
6.89 – 1.5, which is 5.39. There are 200 scans per second. If P2-03 is set to 0.0010, then this would account for a ratio
increase of 0.0010 x 200, or 0.2 per second. The required correction is 5.39 at a rate of 0.2/second would mean that the
final ratio would be reached in 5.39 / 0.2, or 26.95 seconds.
Pgain Reduc cts
P2-04 = 1
P2-04 Proportional Gain Reduction Counts Q Q Q Q
This parameter reduces the proportional gain of P1-04 when the position error counts U1-53 is less than the P2-04 value.
This parameter adds stability when the error count is low without hurting response when error count is high.
Example: P2-04 = 10 and P1-04 = 7. If error count U1-53 = 3, then position error gain = (7 x 3) / 10 = 2.1 instead of 21.
Setting Range: 1 to 10,000
Factory Default: 1000 (adjustable while running)
Modbus Address: 0590H
Setting Range: 1 to 10,000
Factory Default: 1000 (adjustable while running)
Modbus Address: 0591H
Setting Range: 0.0001 to 1.0000
Factory Default: 0.0010 (adjustable while running)
Modbus Address: 0592H
Setting Range: 0 to 2000
Factory Default: 1 (adjustable while running)
Modbus Address: 0593H