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MELSEC-Q series positioning unit.
[Features]
· Excellent compatibility with drive systems. A group of positioning units that offers choices based on the intended application.
· Ideal for systems with many axes that do not require complex control.
· High-speed and high-precision positioning can be easily performed.
[Applications]
· Positioning control system.
Part Number
Configured Part Number is shown.
Many functions required in a positioning control system, such as positioning control to arbitrary positions and constant-speed control, are provided.
This is an ideal positioning unit for systems comprising many axes but not requiring complex controls.
Perfect for simple positioning based on high-speed, linear control. Linear interpolation operations involving up to 4 axes are possible.
Comes with basic positioning functions such as electronic gears, backlash correction and an absolute position system.
| Type Name | QD74MH□ | |
|---|---|---|
| Servo amplifier connection method | SSCNETIII | |
| Maximum connection distance between drive units | 50 m | |
| Control method | PTP (point to point) control, path control (linear only) | |
| Starting time | 1-axis linear control | 0.88 ms |
| 2-axis linear interpolation control | ||
| 3-axis linear interpolation control | ||
| 4-axis linear interpolation control | ||

Sample system configuration
Wire saving due to the due SSCNET III Cables and also permits connection distances of up to 50 m between stations.
An easily supported absolute positioning system where the origin position can be established by data-set type origin return.
In addition, the upper-limit LS / lower-limit LS / proximity dog signals can also be inputted to the servo amplifier, which achieves a significant wire saving.
| QD75MH□ | QD75M□ | ||
|---|---|---|---|
| Servo amplifier connection method | SSCNETIII | SSCNET | |
| Maximum connection distance between drive units | 50 m | 30 m | |
| Control method | PTP (point to point) control, Path control (linear and arc configurable), speed control, Speed/position switching control, position/speed switching control | ||
| Starting time*1 | 1-axis linear control | 3.5 ms | 6.0 ms |
| 1-axis speed control | 3.5 ms | 6.0 ms | |
| 2-axis linear interpolation control | 4.0 ms | 7.0 ms | |
| 2-axis circular interpolation control | 4.0 ms | 7.0 ms | |
| 2-axis speed control | 3.5 ms | 6.0 ms | |
| 3-axis linear interpolation control | 4.0 ms | 7.0 ms | |
| 3-axis speed control | 3.5 ms | 6.0 ms | |
| 4-axis linear interpolation control | 4.0 ms | 7.0 ms | |
| 4-axis speed control | 4.0 ms | 7.0 ms | |

Sample system configuration
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| Positioning data number | 32 | Representative Standard | CE / UL | Single Control Unit | pulse |
|---|---|---|---|---|---|
| Positioning data number(Data/Axis) | 32 | Interpolation function | 2 Axis/ 3 Axis/ 4 Axis Linear Interpolation, 2 Axis Circular Interpolation |

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