How To Configure Safety Relays - ABB FSO-21 User Manual

260 Configuration
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How to configure safety relays

If you want to control a safety relay or contactor with the FSO module, define the use
of the related I/O with these parameters. See also section
with feedback on page 233.
Index Name/Value
SAFEIO.21 Safety relay 1
output
DO X113:8 &
X114:8
SAFEIO.22 Safety relay 1
feedback
DI X113:4
SAFEIO.23 Safety relay 1
feedback type
Mechanically
linked NC
contacts
SAFEIO.24 Safety relay 2
output
None
SAFEIO.25 Safety relay 2
feedback
None
SAFEIO.26 Safety relay 2
feedback type
Mechanically
linked NC
contacts
In addition, you have to connect the safety relay to the desired safety function. Set
the same digital output as you set for the safety relay as the output of the desired
safety function. In this example, safety relay 1 is connected to the SBC function.
Index Name/Value
SBC.21 SBC output
DO X113:8 &
X114:8
Description
Sets the digital output connected to the safety relay 1.
Redundant output X113:8 & X114:8
Sets the digital feedback input of safety relay 1.
Single input X113:4
Sets the type of the feedback signal for safety relay 1.
Feedback of the safety relay is NC (inverted state compared
with the relay).
Sets the digital output for safety relay 2.
No output connected
Sets the digital feedback input of safety relay 2.
No input connected
Sets the type of the feedback signal for safety relay 2.
Feedback of the safety relay is NC (inverted state compared
with the relay).
Description
Sets the digital output that is connected to the SBC output
(brake relays).
Redundant output X113:8 & X114:8
Relay / contactor output