User Manual
Chapter 6
GFK-2843A
Jan 2020
Connection examples for safe outputs
41
Error type
Dete
ction
Diagnosti
cs
Loss
of SF
Remark
Interrupt
Cable interrupt between
output and actuator or
between actuator and
ground
No
None
No
Detect errors using external monitoring.
Please take into consideration all the possible
errors for the actuator used.
Ensure that this error does not result in
delayed system startup.
Cross circuit
Output to output
Yes
All LEDs
OUT:
Red ON
Yes When the outputs are disabled, a cross
circuit between the outputs is only detected
if the test pulses are enabled. If an error is
detected, the module disables all its outputs.
Short circuit
Output to ground
or
output to FE
Yes
Short
circuit or
overload,
OUTx
No
The error is detected in the ON state. The
output is disabled (safe state). The module
cannot be switched on again with an edge
from “0” to “1” until the error has been
removed and acknowledged.
WARNING
Unexpected machine startup
An operator acknowledgment leads to
a positive edge and can therefore result
in the outputs being re-enabled.
Typical parameterization
Parameterization
Parameterized as Remark
Assignment
Used
Output
Single-channel
Switch-off delay for stop category 1
Enabled
Or disabled
Switch-off delay for stop category 1
30
Application-specific
Value range of switch-off delay for stop category 1 Value in s
Application-specific
Test pulses (output disabled) (in software: test
impulses (output switched off))
Enabled
Or disabled
According to the “Value range of switch
-
off delay for stop category 1” and “Switch
-off
delay for stop category 1” parameters, in this example, the switch
-off delay is 30 x 1 s = 30
s.
