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5 Dedicated Options
MITSUBISHI CNC
(c) Rectangular wave output
Select a relative position detector with an A/B phase difference and Z-phase width at the maximum
feedrate that satisfies the following conditions.
Use an A, B, Z-phase signal type with differential output (RS-422 standard product) for the output signal
(Note)The above value is minimum value that can be received normally in the servo drive unit side.
In an actual selection, ensure margin of 20% or more in consideration of degradation of electrical wave
and speed overshoot.
< Example of scale specifications >
The example of using representative rectangular wave scale is shown below.
For specifications of each conversion unit and scale and for purchase, Contact each corresponding
manufacture directly.
<Contact information about machine side detector>
- Magnescale Co., Ltd: http://www.mgscale.com/mgs/
- HEIDENHAIN CORPORATION: http://www.heidenhain.de/
Manufacturer Detector type Interface unit type
Minimum detection
resolution
Tolerable maximum
speed
Magnescale Co., Ltd
SR74
SR84
Not required
1.0μm 180m/min
0.5μm 125m/min
0.1μm25m/min
0.05μm12m/min
HEIDENHAIN
LS187
LS487
IBV 101 (10 divisions) 0.5μm 120m/min
IBV 102 (100 divisions) 0.05μm24m/min
IBV 660B (400 divisions) 0.0125μm 7.5m/min
Output circuit
A-phase
B-phase
A, B, Z-phase
Z-phase
A, B, Z-phase
Phase difference
Integer mm
For a scale having multiple Z phases, select the neighboring
Z phases whose distance is an integral mm.