Head Unit And Scale Unit - Magnescale PL25 Instruction Manual

3-4. Head unit and scale unit

Note
Make sure that the head and scale clearance remains
within the value given below.
If the head unit and scale unit touch one another or the
clearance is smaller than specified, the system will not
operate normally.
3-4-1. Head clearance
Head unit
Scale unit
PL25 / SL110
PL25 / SL130
PL60 / SL331
12
Detection surface
Clearance
Clearance
1.5 mm/0.06"
or less
0.8 mm/0.03"
or less
3-4-2. Track deviation
3-4-3. Scale unit and head unit
Scale surface
θ
θ
3 Head
2
θ θ θ θ θ
1
±3° or less
PL25
±1° or less
PL60
±2 mm
/±0.08"
θ
1
θ θ θ θ θ θ θ θ θ θ
2 3
±0.5° or less ±3° or less
±0.3° or less ±1° or less