34
12.3 Safety light curtains: 40 mm resolution
OY451S
Total length L
[mm]
1842
Protected area height
[mm]
1660
Response time
[ms]
14
Safety-related reliability PFH
D
[1/h]
1,5
-08
Test pulse duration t
i
[µs]
80
Test pulse interval T
[ms]
8,8
Ratio t
i
/ T
[%]
0,9
12.4 Safety light grids 2, 3 and 4 beams
OY421S
OY422S
OY423S
Number of beams
2
3
4
Total length L
[mm]
782
1082
1182
Protected area height
[mm]
510
810
910
Response time
[ms]
2.5
2.5
2.5
Safety-related reliability PFH
D
[1/h]
9.2
-09
1.0
-08
1.1
-08
Test pulse duration t
i
[µs]
80
80
80
Test pulse interval T
[ms]
2,3
2,4
2,5
Ratio t
i
/ T
[%]
3,5
3,3
3,2
13 Troubleshooting
The LEDs of the transmitter and the receiver indicate faulty operating states
(→ 9 Operating and display elements). For a detailed fault description see the
following tables.
13.1 Fault diagnosis transmitter
LED
Possible cause
Troubleshooting
red
2 consecutive
pulses
Faulty connection
Check the white and green cores.
red
3/4 consecutive
pulses
Internal fault
Send device to ifm branch office for repair.
