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 />
4.3.14 Multistage position switching function (CP1/CP2/CP3)<br />
- When functions "66" (CP1) to "68" (CP3) are assigned to terminal [1] function (C001) to terminal [8]<br />
function (C008), you can select a position setting from multistage positions 0 to 7.<br />
- Use multistage position settings 0 to 7 (P060 to P067) for the position settings.<br />
- If no position settings are assigned to terminals, multistage position setting 0 (P060) is assumed.<br />
Position setting CP3 CP2 CP1<br />
Multistage position setting 0 0 0 0<br />
Multistage position setting 1 0 0 1<br />
Multistage position setting 2 0 1 0<br />
Multistage position setting 3 0 1 1<br />
Multistage position setting 4 1 0 0<br />
Multistage position setting 5 1 0 1<br />
Multistage position setting 6 1 1 0<br />
- You can specify a delay to be applied at multistage position setting input, until the relevant terminal input<br />
is determined. Use this specification to prevent the application of fluctuating terminal input before it is<br />
determined.<br />
- You can adjust the determination time with the multistage speed/position determination time setting<br />
(C169). The input data is finally determined when the terminal input becomes stable after the delay set as<br />
C169. (Note that a long determination time deteriorates the input terminal response.)<br />
Determination time (C169) = 0<br />
3<br />
Position command<br />
1<br />
7<br />
Determination time (C169) specified<br />
5<br />
4<br />
CP1<br />
CP2<br />
CP3<br />
4.3.15 Speed/position switching function (SPD)<br />
Determination time<br />
(C169)<br />
- To perform speed control operation in absolute position control mode, turn on the SPD terminal.<br />
- While the SPD terminal is off, the current position count remains at 0. Therefore, if the SPD terminal is<br />
turned off during operation, the control operation is switched to position control operation based on the<br />
position where the terminal is turned off. (Speed control operation is switched to position control<br />
operation.)<br />
- If the position setting is 0 at this time, the inverter stops the motor at that position.<br />
(Hunting may occur if a certain position loop gain value has been set.)<br />
- While the SPD terminal is on, the rotating direction depends on the operation command. When switching<br />
from speed control to position control, pay attention to the sign of the value set in the operation command.<br />
Output frequency<br />
Start of position counting<br />
Speed control<br />
Position control<br />
Time<br />
SPD terminal<br />
ON<br />
4 - 109<br />
Target position