the inverter unit STO function. The inverter unit STO function is active until the fault has
been repaired.
The FSO module goes into Fail-safe mode. The STATUS/FAULT LED of the FSO module
is red until the fault has been repaired.
To exit the Fail-safe mode, remove the cause of the fault and reset the FSO module by
switching the power off and on, by pressing the Boot FSO button on the Safety view of Drive
composer pro or with inverter unit parameter 96.09 FSO reboot.
For more information, see the inverter unit firmware manual and the FSO module user’s
manual.
￭
STO function in the inverter units
The STO function in the inverter units has internal fault diagnostics and a fault reaction
function which causes a fault trip in case it detects a redundancy fault of STO control signals
or any internal failure. See the hardware and firmware manuals of the inverter unit.
Parameter settings
This section lists the parameters that you have to set in the FSO modules and the inverter
units.
The person who configures the safety functions in the FSO module must be a competent
person as required by IEC 61508-1 clause 6. In this context, the person must have expertise
and knowledge of functional safety, the safety functions as well as the configuration of the
FSO module. We recommend our training courses on the FSO module.
The parameter values given in this chapter are example values safety function(s) presented
in this manual. Actual parameter values of the delivery may vary. You must always check
that the parameter settings match your application needs.
￭
FSO module parameter settings
You need the Drive composer pro PC tool to set the FSO module parameters, and a
password to be able to download the configuration to the FSO module from Drive composer
pro. For the default password of the FSO module, see the FSO module user’s manual. For
more information on the Drive composer pro PC tool, see
Start-up and maintenance PC
tool Drive composer user’s manual
(3AUA0000094606 [English]).
Note:
When the motor is running, you cannot change the password, adjust parameter
values, nor upload or download the FSO configuration file.
Follow the configuration steps described in the FSO module user’s manual, chapter
Configuration
.
There are parameters that you must always set and parameters that are related to certain
safety functions only. These tables list all the parameters that you must check and set for
the Q950. The example values apply only to the Q950.
General parameters
These parameters are common to all safety functions.
Description
Example value
Name
Index
Sets the nominal motor speed. Adjust the
default value to meet the ratings of the mo-
tor in use.
1500 rpm
Motor nominal speed
FSOGEN.21
Option description 19
