BERNSTEIN SHS3 Series Installation And Operating Instructions Manual - Page 16

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Installation and Operating Instructions
Calculation of the door gap with respect to opening angle, door width and overlapping.
For design and installation it is important to note that for the fixed switching point and for the resulting opening angle of the door
a sufficient small gap in between the door element and the door frame is achieved. This is necessary to avoid any grasp into the
separating safety guard.
Table 1
Opening
1°
2°
3°
angle „α" of
the door
Door width
Door gap „C" in millimeter
„B" in mm
with a frame width „A" = 0 mm
100
1,7
3,5
5,2
150
2,6
5,2
7,9
200
3,5
7,0
10,5
250
4,4
8,7
13,1
300
5,2
10,5
15,7
350
6,1
12,2
18,3
400
7,0
14,0
20,9
450
7,9
15,7
23,6
500
8,7
17,4
26,2
550
9,6
19,2
28,8
600
10,5
20,9
31,4
650
11,3
22,7
34,0
700
12,2
24,4
36,6
750
13,1
26,2
39,3
800
14,0
27,9
41,9
850
14,8
29,7
44,5
900
15,7
31,4
47,1
950
16,6
33,2
49,7
1000
17,5
34,9
52,3
1050
18,3
36,6
55,0
1100
19,2
38,4
57,6
1150
20,1
40,1
60,2
1200
20,9
41,9
62,8
1250
21,8
43,6
65,4
1300
22,7
45,4
68,0
1350
23,6
47,1
70,7
1400
24,4
48,9
73,3
1450
25,3
50,6
75,9 101,1 126,4 151,6 176,7 201,8 226,8 251,8
1500
26,2
52,3
78,5 104,6 130,7 156,8 182,8 208,8 234,7 260,5
Electrical termination
Electrical termination by trained and qualified personnel only!
System description / application recommendation
for dual channel monitoring in control category: 3/4 safety relay,
such as Bernstein type 607.5111.010 SCR-W22-3.5-SD
Bernstein AG, Tieloser Weg 6, D-32457 Porta Westfalica / www.bernstein-ag.de
B
Vital part in safety related applications is the angle at which forced
disconnection of the N.C. contacts is achieved!
The SHS3 features an angle of 6° for forced disconnection which can
increase due to tolerances and wearout by 2° up to 8°!
To make the selection easier these relevant data have been
highlighted in the corresponding columns in table 1.
4°
5°
6°
7°
8°
7,0
8,7
10,5
12,2
13,9
10,5
13,1
15,7
18,3
20,9
14,0
17,4
20,9
24,4
27,8
17,4
21,8
26,1
30,5
34,8
20,9
26,1
31,4
36,6
41,8
24,4
30,5
36,6
42,7
48,7
27,9
34,9
41,8
48,7
55,7
31,4
39,2
47,0
54,8
62,6
34,9
43,6
52,3
60,9
69,6
38,4
47,9
57,5
67,0
76,5
41,9
52,3
62,7
73,1
83,5
45,3
56,7
67,9
79,2
90,5 101,7 112,9
48,8
61,0
73,2
85,3
97,4 109,5 121,6
52,3
65,4
78,4
91,4 104,4 117,3 130,2
55,8
69,7
83,6
97,5 111,3 125,1 138,9
59,3
74,1
88,8 103,6 118,3 133,0 147,6
62,8
78,4
94,1 109,7 125,3 140,8 156,3
66,3
82,8
99,3 115,8 132,2 148,6 165,0
69,8
87,2 104,5 121,9 139,2 156,4 173,6
73,2
91,5 109,8 128,0 146,1 164,3 182,3
76,7
95,9 115,0 134,1 153,1 172,1 191,0
80,2 100,2 120,2 140,1 160,0 179,9 199,7
83,7 104,6 125,4 146,2 167,0 187,7 208,4
87,2 108,9 130,7 152,3 174,0 195,5 217,1
90,7 113,3 135,9 158,4 180,9 203,4 225,7
94,2 117,7 141,1 164,5 187,9 211,2 234,4
97,7 122,0 146,3 170,6 194,8 219,0 243,1
SCR
Power-
contactor
Document: 0800000455_en.doc / Updated: 1 / 3039-05
Calculation example
9°
10°
The actually achieved door gap C1can be easily
calculated based on the value C according to the left
table, and less the door frame width A.
15,6
17,4
23,5
26,0
C1 = C – A
31,3
34,7
39,1
43,4
46,9
52,1
Example: A door with A= 40 mm aluminum profile and a
54,8
60,8
width B of 900 mm shall be safe guarded by use of a
62,6
69,5
SHS3.
70,4
78,1
The switching point is fixed while door is closed, the
78,2
86,8
86,0
95,5
typical switching point of SHS3 is now at α= 3° in opening
93,9 104,2
direction. The left table gives back a value of approx. 47,1
mm for the door gap a 0h lifetime.
The actual door gap can be now calculated to the formula
C1=C-A.
C1= 47,1 mm – 40 mm = 7,1 mm
24 V DC
ON OFF
Start-
function
Motor
Date of issue: 15.12.2005 / Page 7 of 9
Template: 0850174292 Orig. 2