12
(E)
MJ620
3-5. Setting the minimum phase difference
When the A/B phase difference that was set by mode switches 2-5 and 2-6 (minimum phase
difference 1 and 2 switches) drops below the minimum phase difference setting value, an
alarm signal is generated.
The default setting is 100 ns.
MODE switch 2-5
MODE switch 2-6
Minimum phase
(minimum phase
(minimum phase
difference setting
difference 1 switch)
difference 2 switch)
value
OFF
OFF
100 ns
ON
OFF
400 ns
OFF
ON
2.5
u
s
ON
ON
25
u
s
3-6. Maximum response speed
If the A/B output phase difference drops below the minimum phase difference setting value,
a speed alarm is output since the response speed is exceeded.
The speed immediately before the alarm is output is the maximum response speed.
The maximum response speed is determined by the number of divisions (number of
interpolations) and increases as the number of divisions decreases. When the number of
divisions (number of interpolations) is 120 or less, the speed is limited to 56 m/s, and a speed
alarm is generated even when the output phase difference exceeds the minimum phase
difference setting value.
Maximum response speed (m/s)
Number of
Resolution
100 ns
400 ns
2.5
u
uu
uu
s
25
u
uu
uu
s
divisions
(
u
uu
uu
m)
800
1
6.4
1.6
0.05
0.005
400
2
16
4
0.5
0.04
160
5
36.8
9.2
1.7
0.16
80
10
56
22
3.8
0.36
40
20
56
44
7
0.7
32
25
56
56
9
0.9
