KEYENCE SJ-M200 - Manual (Page 5)

4
2-1
Before Installation
This section describes the static elimination performance of the SJ-M100/200 Series.
Before you install the SJ-M100/200 Series, fully calculate the distance between the Static Elimination
Head up to the target object and the time required for static elimination.
About Static Elimination Performance
The following shows a typical example where static is eliminated from an aluminum plate (20 pF) 150 x
150 mm square charged to +1000 V by the SJ-M100/200 Series.
■ Static elimination time
The following graphs show typical examples of the relationship between static elimination time and
static charged voltage.
Measurement condition:
Applied voltage +1000 V
150 mm x 150 mm plate monitor (20 pF) used
Installation distance 300 mm
Air purge pressure 0.5 MPa
Cable length 2 m
SJ-M010/020 SJ-M020G
SJ-M020+SJ-MS2 SJ-M020+SJ-MS1
0
100
200
300
400
500
600
700
800
900
1000
0 0.2 0.4 0.6 0.8 1
Charged le
v
el (V)
Time (secs)
0
100
200
300
400
500
600
700
800
900
1000
0 0.1 0.3 0.4 0.5 0.6
Time (secs)
Charged level (V)
0.2
0
100
200
300
400
500
600
700
800
900
1000
0 0.2 0.6 0.8 1.2 1 1.4
Time (secs)
Charged level (V)
0.4
0
100
200
300
400
500
600
700
800
900
1000
0 1 3 4 7 6 5 8 9
Time (secs)
Charged level (V)
2
2-1 Before Installation
SJ-M020+SJ-MS3 (500 mm) SJ-M020+SJ-MS4 (500 mm)
SJ-M020+SJ-ML SJ-M020+SJ-ML2
SJ-M020+SJ-ML1 SJ-M020+SJ-ML3 (500 mm)
SJ-M020+SJ-ML4 (500 mm)
0
100
200
300
400
500
600
700
800
900
1000
0 1 3 4 6 5 7
Time (secs)
Charged level (V)
2
0
100
200
300
400
500
600
700
800
900
1000
0 1 5 7 11 9 12
Time (secs)
Charged level (V)
3 2 6 8 10 4
0
100
200
300
400
500
600
700
800
900
1000
0 0.2 1 1.4
Time (secs)
Charged level (V)
0.6 0.4 1.2 0.8
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
0 0.5 2
Time (secs)
Charged level (V)
1.5 1
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
0 0.5 2.5 4 4.5 5 1.5 1 3 2 3.5
Time (secs)
Charged level (V)
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
0 0.5 2.5 4 4.5 5 1.5 1 3 2 3.5
Time (secs)
Charged level (V)
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
0 1 5 8 9 10 3 2 6 4 7
Time (secs)
Charged level (V)
2-1 Before Installation
■ Static elimination area
The following graphs show the relationship between the time required for eliminating static from a
target object charged between +1000 to +100 V and the distance from the charged object up to the
Static Elimination Head.
Model No. SJ-M010/020
Air flow rate 20 Nl/min
(pressure 0.01 MPa)
Air flow rate 60 Nl/min
(pressure 0.05 MPa) Air flow rate 250 Nl/min (pressure
0.5 MPa)
Model No. SJ-M020G
Air flow rate 20 Nl/min
(pressure 0.02 MPa)
Air flow rate 60 Nl/min
(pressure 0.12 MPa) Air flow rate 200 Nl/min (pressure
0.5 MPa)
200 150 100 50 0 50 100 150 200
mm
mm
0
200
400
600
100
300
500
0.5sec
1sec
2sec
5sec
10sec
200 100 150 50 50 0 100 150 200
mm
mm
100
0
200
400
500
600
700
800
900
300
1000
0.5sec
1sec
2sec
5sec
200 150 100 50 50 0 100 200 150
mm
mm
300
0
150
450
750
1050
1500
600
900
1200
1350
0.5sec
1sec
2sec
200 150 100 50 0 50 100 150 200
mm
mm
0
200
400
600
100
300
500
0.5sec
1sec
2sec
5sec
10sec
200 150 100 50 0 50 100 150 200
mm
mm
0
200
400
600
100
300
500
800
1000
700
900
0.5sec
1sec
2sec
3sec
-200 -150 -100 -50 0 50 100 150 200
mm
mm
0
200
400
600
100
300
500
800
1000
700
900
1100
1300
1500
1200
1400
0.5sec
1sec
1.5sec
2-1 Before Installation
Model No. SJ-M020+SJ-MS1
Air flow rate 20 Nl/min
(pressure 0.03 MPa)
Air flow rate 60 Nl/min
(pressure 0.16 MPa) Air flow rate 160 Nl/min (pressure
0.5 MPa)
Model No. SJ-M020+SJ-MS2
Air flow rate 20 Nl/min
(pressure 0.02 MPa)
Air flow rate 60 Nl/min
(pressure 0.1 MPa) Air flow rate 250 Nl/min (pressure
0.5 MPa)
SJ-M020+SJ-MS2/ML2
Static elimination area
200 150 100 50 0 50 100 150 200
mm
mm
0
200
400
600
100
300
500
5sec
8sec
10sec
200 150 100 50 0 50 100 150 200
mm
mm
0
200
400
600
100
300
500
800
1000
700
900
3sec
5sec
8sec
10sec
400 300 200 100 350 250 150 50 0 100 200 300 400
mm
mm
0
200
400
600
100
300
500
800
1000
700
900
1100
1300
1500
1200
1400
50 150 250 350
8sec
2sec
3sec
5sec
7sec
200 150 100 50 0 50 100 150 200
mm
mm
0
200
400
600
100
300
500
5sec
8sec
10sec
20sec
200 150 100 50 0 50 100 150 200
mm
mm
0
200
400
600
100
300
500
800
1000
700
900
2sec
5sec
8sec
10sec
300 200 100 250 150 50 0 100 200 300
mm
mm
0
200
400
600
100
300
500
800
1000
700
900
1100
1300
1500
1200
1400
50 150 250
3sec
1sec
2sec
14
100mm
-50mm
100mm
280mm
-50mm
500mm