Fiessler ULVT - 4 Installation; Response Times ULVT, BLVT, Cascaded Systems and Optional Safety Switching Units

4.1 Response time (reaction time)
With ULVT/BLVT light curtains, the response time t1 of the safety device depends on the number of beams.
The type name contains the construction height and the number of beams (please refer also to table on page 9).
(e.g.: ULVT 500/65 => construction length: 500 mm and 65 beams) .
no. of beams
response time (ms)
no. of beams
response time (ms)
2
3
4
4
56
63
9
10
4
5
6
7
4
4
65
70
5
5
77
78
10
10
11
11
8
9
10
11
5
5
84
91
5
5
98
104
12
13
14
15
5
6
105
112
6
6
117
119
12
12
13
13
13
14
14
15
16
17
18
19
6
6
126
130
6
6
133
143
20
21
26
28
6
6
156
169
7
7
182
195
15
15
16
17
18
19
20
21
35
39
42
47
7
8
208
221
8
9
234
247
52 9
22
23
24
25
ULVT (category 4)
TLVT (category 2)
no. of beams
response time (ms)
no. of beams
response time (ms)
2
3
6
6
56
63
13
14
4
5
6
7
6
6
65
70
6
6
77
78
14
14
15
15
8
9
10
11
7
7
84
91
7
7
98
104
12
13
14
15
7
7
105
112
7
8
117
119
16
17
18
19
19
20
20
21
16
17
18
19
8
8
126
130
8
8
133
143
20
21
26
28
8
8
156
169
9
9
182
195
21
22
22
24
25
27
28
30
35
39
42
47
10
10
208
221
11
11
234
247
52 12
32
33
35
37
BLVT (category 4 mit Ausblendfunktion)
ILVT (category 2 mit Ausblendfunktion)
Table 13/1 number of beams and response times ULVT
Table 13/2 number of beams and response times BLVT
Typ Response time(ms)
PLSG 1 (Muting switching unit)
PLSG 2 (Muting switching unit)
3,5
3,5
PLSG 3 (Switching unit for machine control)
ULSG
BPSG (BLVT-Programmer-controller)
LSUW N1 Muting K
3,5
6
6
20
LSUW NSR 3-1 K 25
optiaonls afety switching units
Table 13/4 Response time safety switching units
System / example
Response time (ms) notes
Master sensor
ULVTK 800/56 = 9 ms
slave sensor 1
ULVTK 500/35 = 7 ms + 3 ms = 10 ms
own response time
(see table above)
own response time
(see table above)+ 3
ms
Response time of the slave sensor 1 increases for 3 ms compared to a
standard system, due to the fact that the master sensor detects an in-
terruption of the following sensor 1 within 3 ms.
slave sensor 2
ULVT 800/3 = 4 ms + 6 ms = 10 ms
own response time
(see table above)+ 6
ms
Response time of the slave sensor 1 increases for 6 ms compared to a
standard system, due to the fact that the slave sensor 1 detects an in-
terruption of the slave sensor 2 within 3 ms, and that the master sensor
detects an interruption of the slave sensor1 within 3 ms.
cascaded light curtains
ULVTK / BLVTK
Table 13/3 Response time of cascaded systems
4 Installation - Response times
FIESSLER
E L E K T R O N I K
13
Fiessler Elektronik GmbH & Co. KG
Doku Nr. 958 Stand 22.01.2018 RK
Phone: +49 (0) 711 / 91 96 97-0 Internet: http://www.fiessler.de
Fax : +49 (0) 711 / 91 96 97-50 eMail: info@fiessler.de