G9SX-LM
4. Example of low speed detection settings
When the number of rotations at low speed is 50 rpm and the number of cogwheel teeth detected by proximity sensors is 6, the frequency at low
speed is 50 rpm x 1 / 60 x 6 = 5 Hz.
Consider the low-speed detection frequency accuracy (tolerance of -10%) such that low speed detection frequency setting is 6.0 Hz or higher.
(1)
(2)
Low-speed detection frequency
Low speed detection settings (Hz)
accuracy: Hz
((1) - (1) x 10%)
2
1.8
2.2
1.9
2.4
2.1
2.8
2.5
3.0
2.7
3.2
2.8
3.6
3.2
4.2
3.7
4.7
4.2
5.3
4.7
6.0
5.4
6.6
5.9
7.3
6.5
8.4
7.5
9.3
8.3
10
9
(3)-1
Safety speed detection outputs
are turned ON.
No. of revolutions: rpm
∗ No. of cogwheel teeth: 6 ((2) x
60 / 6)
18
19
21
25
27
28
32
37
42
47
54
59
65
75
83
90
(3)-2
Safety speed detection outputs
are turned ON.
No. of revolutions: rpm
∗ No. of cogwheel teeth: 3 ((2) x
60 / 3)
36
38
42
50
54
56
64
74
84
94
108
118
130
150
166
180
5. Relationship between motor, cogwheel, and hazards
Install the cogwheel between the motor and a hazardous source.
Motor
Rotator detected
Hazardous source
by a proximity sensor
Perform a risk assessment for entire equipment including the conditions of use to implement safety measures.
(For example, attaching a protective cover around a cogwheel)
16