SICK Flexi Compact User Manual

Parameter Description
Discrepancy time The discrepancy time determines how long the two inputs can
cont
inue to have different values after the value of one of the two
input signals changes.
OSSD test pulse filter When this option is activated, the device filters out test pulses
from safety sensors with self-testing semiconductor outputs
(OSSD) that have a test pulse duration of ≤ 1 ms.
No lengthening of the response time needs to be taken into con‐
sideration.
Max. tolerated test pulse
de
lay
The max. tolerated test pulse delay specifies how long safety sen‐
sors with test inputs can delay the signal of a test output (X)
before the safety capable input no longer detects it.
•
For safety sensors with test inputs:
If the configured test pulse frequency is > 8 ms and a long
de
lay of the test signal due to the connected sensors is
expected, e.g., when cascading the sensors, set this to 12 ms.
See the operating instructions of the sensor
•
In all o
ther cases and for all other sensors:
Always use 0 ms
Take into account the longer response time.
Further topics
•
"Discr
epancy time", page 47
•
"Maximum response time", page 131
•
"Data sheet", page 126
•
"Report main navigation menu", page 112
7.4.5.2 Discrepancy time
Overview
T
he safety controller evaluates dual-channel elements with or without a discrepancy
time. The discrepancy time determines how long the two inputs can continue to have
different values (for dual channel equivalent mode) or the same value (for dual-channel
complementary mode) after the value of one of the two input signals changes.
Discrepancy conditions for equivalent and complementary evaluation
Table 11: Dual-channel evaluation
Mode Input A Input B Discrepancy timer
1)
Status of dual-
c
hannel evalua‐
tion
Input in the logic
editor
Discrepancy
error
Dual channel
equivalent
0 0 0 Deactivated 0 0
0 1 < discrepancy time Discrepant 0 Unchanged
2)
1 0 < discrepancy time Discrepant 0 Unchanged
2)
1 1 0 Active
3)
1 0
X X ≥ discrepancy time
(t
imeout)
Error 0 1
CONFIGURATION 7
8024589/2020-11-10 | SICK O P E R A T I N G I N S T R U C T I O N S | Flexi Compact
47
Subject to change without notice

SICK Flexi Compact Specifications

General

Brand	SICK
Model	Flexi Compact
Category	Controller
Language	English