Rockwell Automation 442L-SFZNMN SafeZone Mini Safety Laser Scanner User Manual - Manual (Page 58)

56 Rockwell Automation Publication 10000337275 Ver 01—October 2014
Chapter 12 Technical specifications
How to calculate the total response time T
S
:
T
S
= t
B
+ T
MFA
+
Where …
t
B
= Basic response time = 80 ms
T
MFA
= Supplement due to multiple sampling > 2
Multiple sampling
On the SafeZone Mini at least double multiple sampling is always set. For a multiple sampling of three or higher you must
add a supplement of 80 ms to the basic response time.
Table 16: Supplements for multiple sampling
Timing behavior of the OSSDs
of the SafeZone Mini The SafeZone Mini tests the OSSDs immediately after switch on and then at regular intervals. For this purpose the
SafeZone Mini briefly switches off both OSSDs (for 300
s) and checks whether the OSSDs switch to the OFF state during
this time.
Note Ensure that the safety inputs on the controller used do not respond to these test pulses and as a result cause the machine
or system to unintentionally shutdown!
Fig. 50: Diagram of the test pulses at the OSSDs
Approximately 35 ms after the switch on of the OSSDs, the SafeZone Mini performs the first voltage test and then after a
half basic response time (40 ms) a second voltage test.
Multiple sampling Supplement Basic response time + supplement
2 times (basic setting) 0 ms 80 ms
3 times 40 ms 120 ms
4 times 80 ms 160 ms
5 times 120 ms 200 ms
6 times 160 ms 240 ms
7 times 200 ms 280 ms
8 times 240 ms 320 ms
9 times 280 ms 360 ms
10 times 320 ms 400 ms
11 times 360 ms 440 ms
12 times 400 ms 480 ms
13 times 440 ms 520 ms
14 times 480 ms 560 ms
15 times 520 ms 600 ms
16 times 560 ms 640 ms
Approx.
35 ms
40 ms
120 ms 120 ms 120 ms
OSSD1
OSSD2
t
t
     