54 Safety functions
This figure shows an example cascade configuration. Two different safety functions
are cascaded in the same cascaded system.
The inputs and outputs of the FSO module are defined as pairs. In this example,
single input X113:2 is cascaded with single output X113:8. When Emergency stop
(Safety function 1) is activated in the master FSO module (from redundant digital
input X113:1&X114:1), it is also activated in the follower FSO modules. Safety
function 2 is cascaded with single input X113:3 and single output X113:9.
You must configure one of the cascaded FSO modules as the master and the others
as followers.
You must configure all follower FSO modules to use the automatic acknowledgement
method. The master FSO module can have an acknowledgement button (manual
acknowledgement). The acknowledgement starts always from the master.
You can configure one or two safety functions in the same cascaded system. If the
whole cascaded system must trip after reaching a limit of any safety function, or a
diagnostics fault, you must have the SSE function in the cascaded system.
If an FSO module activates the STO function (after a limit hit, an STO request from
the I/O or the safety fieldbus, or after an internal fault), also the cascaded SSE output
is triggered.
Note
: When several drives are linked together in a master/follower system and the
follower drive is in the torque control mode, stopping functions with a deceleration
ramp (SSE with emergency ramp and SS1) will turn the follower drive to the speed
control mode. For more information on the master/follower functionality in the drive,
see the firmware manual.
FSO
FSO
Safety
function
Safety
function
Out
In
Acknowledgement
Automatic acknowledgement
FSO
FSO
Emergency stop
G
E
M
ER ENC
Y
O
ST P
Follower
Follower
Out
In
Safety
function 1
Out
In
Safety
function
Out
In
Safety
function 1
Out
In
Safety
function
Out
In
Safety
function 2
Out
In
Safety
function
Out
In
Safety
function 2
Out
In
FSO
Master
Safety
function 1
Out
In
Out
In
Safety
function
Out
In
Safety
function 2
Out
In
X113:7
X113:1
X114:1
X113:2
X113:4
X113:8
X113:2
X113:9
X113:3
X113:8
X113:2
X113:8
X113:9
X114:2
X113:9
X113:3
X113:3
Summary of Contents for FSO-12
Page 1: ... OPTIONS FOR ABB DRIVES FSO 12 safety functions module User s manual ...
Page 4: ......
Page 12: ...12 Table of contents ...
Page 36: ...36 Safety information and considerations ...
Page 136: ...136 Safety functions ...
Page 196: ...196 PROFIsafe 5 To read the diagnostic messages select the I O Device Diagnostics tab ...
Page 200: ...200 PROFIsafe ...
Page 326: ...326 Start up ...
Page 386: ...386 Dimension drawings ...