SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.
SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.
SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.
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Chapter 4 Explanation of Functions<br />
(Control block diagram)<br />
ATR terminal<br />
Torque bias<br />
Torque limit<br />
Torque<br />
command input<br />
Torque command<br />
(Current control command)<br />
Speed<br />
control<br />
(P control)<br />
Speed limit<br />
Detected<br />
speed<br />
Speed<br />
monitoring<br />
If the detected speed exceeds the speed<br />
limit, the motor speed is controlled in<br />
proportional (P) control mode.<br />
4.3.6 Pulse train position control mode<br />
- To use this function, specify "05" (V2) for V/F characteristic curve selection, 1st motor (A044) and "01"<br />
(pulse train position control mode) for the control pulse setting (P012).<br />
- You can choose the input source of pulse train command pulse train mode setting (P013).<br />
Item Function code Data or range of data Description<br />
Control pulse setting P012 01 Pulse train position control mode<br />
00 MD0: 90°-phase-shift pulse train<br />
Pulse train mode setting (*2) P013<br />
01<br />
MD1: Forward/reverse operation<br />
command with pulse train<br />
02<br />
MD2: Forward-operation pulse train with<br />
reverse-operation pulse train<br />
Home search completion<br />
0. to 9999. / 1000<br />
P017<br />
range setting<br />
(100000)<br />
Equivalent to encoder quadruplex<br />
Home search completion<br />
delay time setting<br />
P018 0.00 to 9.99 (s)<br />
Electronic gear set position<br />
00 FB : Feed back side<br />
P019<br />
selection<br />
01 REF : Controller side<br />
Electronic gear ratio<br />
numerator setting<br />
P020 1. to 9999.<br />
Electronic gear ratio<br />
denominator setting<br />
P021 1. – 9999.<br />
Feed-forward gain setting P022<br />
0.00 to 99.99 / 100.0<br />
to 655.3<br />
Position loop gain setting<br />
P023<br />
0.00 to 99.99 / 100.0<br />
(rad/s)<br />
Position bias setting<br />
P024<br />
-204 (-2048) / -999. to<br />
2048.<br />
Terminal function<br />
C001 to C008<br />
47<br />
PCLR: Clearance of position deviation<br />
data<br />
48<br />
STAT: Pulse train position command<br />
input enable<br />
*1 In pulse train position control mode, the frequency value of a frequency command is calculated as<br />
follows:<br />
6.4×P×Kv<br />
Frequency command (Hz) = ×<br />
ENC<br />
⊿P<br />
255<br />
P: Number of poles of the motor<br />
Kv: Position loop gain<br />
ENC: Encoder pulse count<br />
⊿P: Position deviation<br />
In position control mode, the setting for the acceleration and deceleration time is invalid. (The LAD<br />
cancellation function operates automatically to ignore acceleration and deceleration patterns.) When the<br />
position loop gain is larger, the acceleration/deceleration time is shorter.<br />
4 - 100
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