Hitachi WJ200-001L, Instruction Manual

Page: 517 / 680

Ver.3
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8
Creep pulse ratio (simple positioning)
•
A parameter to appoint creep interval at the time of the simple position control added.
Following is the related parameter for this function.
Fun Fun Fun Func. c. c. c.
Code Code Code Code
Name
Name Name
Name Description
Description Description
Description
P
P P
P0
0 0
01
1 1
14
4 4
4 Creep pulse ratio 0.0
～
400.0[%]
P
P P
P0
0 0
011
11 11
11 Encoder pulse setting 32
～
1024[pulse]
P
P P
P0
0 0
01
1 1
15
5 5
5 Creep Speed Start Frequency(b082)
～
10.00[Hz]
H
H H
H00
00 00
004
4 4
4 Motor poles setting 2(0)/4(1)/6(2)/8(3)/10(4)/12(5)/14(6)/16(7)/18(8)/
20(9)/22(10)/24(11)/26(12)/28(13)/30(14)/32(15)/
34(16)/36(17)/38(18)/40(19)/42(20)/44(21)/46(22)/
48(23)[pole(data)]
H H H H2 2 2 20 0 0 04 4 4 4 Motor poles setting,2nd motor
b b b b0 0 0 08 8 8 82 2 2 2 Start frequency
0.01
～
9.99[Hz]
•
Here, P014 indicates the “Internal special parameter” for “Creep pulse ratio”, that can be set by specifying the
address with Debug Mode. It is only one method.
Creep ratio adjustment – The creep driving time is determined by counting the number of pulse during creep
driving. “Creep pulse ratio” is possible to set the number of creep pulse as the ratio of the encoder pulse setting.
The number of creep pulse (N[pulse]) is calculated as follows.
100
ratio) Pulse Creep : P014(%
× setting) pulse Encoder : P011(pulse = N(pulse)
The time during the creep driving (T[s]) is calculated as follows.
setting) pulse Encoder : P011(pulse
pulse) Creep : (pulse
2
setting) poles Motor : (Pole H004orH204
speed) Creep : P015(Hz
1
= T(s)
Ｎ
× ×
Default setting “125%” is equivalent to 5/4 cycle of the motor when counting pulse of one cycle are equivalent to
the encoder pulse setting (P011). This is the current spec
〈
Caution
〉
If you set the “Creep ratio” to extremely low value, the simple positioning may not work properly because of
motor overshoot.