Vacon OPTAF, User Manual

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vacon • 32 STO AND SS1 SAFETY FUNCTIONS
Local contacts: https://www.danfoss.com/en/contact-us/contacts-list/
In application, there is also a possibility to indicate the STO state. This can be done through a digital
output.
For example the VACON
®
NXP multi purpose application provides the user with this possibility.
The indication of STO state could be parametrized to one of the relays on OPTAF board (B1 or B2).
The parameter for providing this feedback can be found in: parameters  output signals  dig out
signals  SafeDisableactiv.
NOTE! The feedback or indication of the STO state is NOT part of the Safety functions.
3.5.4 OPTAF board parameter
NOTE ! In Fault mode, the drive fault reset should be delayed compared to a reset of the device con-
trolling the STO inputs of OPTAF. Otherwise, OPTAF may re-detect the STO activation before the
STO is deactivated by the controlling device. This results in a need for second fault reset in the drive.
Other solution is to use Warning level. This behavior can occur, for example, with Advanced safety
options or with safety relays with reset signal where the used reset signal the same as the drive
fault reset.
3.5.5 Parametrizing the drive and the external time delayed safety relay
for Safe Stop (SS1) safety function
Safe Stop 1 requires setting of time delay on the external safety relay component:
• Requirement: The time delay setting needs to be greater than the deceleration time set in
the drive
Code Parameter Default Note
P7.2.1.2 Start-Up Prev “Fault” To start the motor operation after the STO safety func-
tion or a thermistor fault, an edge sensitive start com-
mand is required after the drive returns to ready state.
a) When OPTAF board parameter "Start-Up
Prev" is "
Fault ", the drive will generate a
"F26 Start-Up Prev" fault if start command is
on , when returning to ready state after the
STO safety function or a thermistor fault has
been active. The drive can be started with an
edge sensitive start command after fault
reset.
b) When OPTAF board parameter "Start-Up
Prev" is "
Warning ", the drive will generate a
"A26 Start-Up Prev" warning if start com-
mand is on , when returning to ready state
after the STO safety function or a thermistor
fault has been active. The drive can be started
with an edge sensitive start command. No
fault reset is required in this case.
c) When OPTAF board parameter "Start-Up
Prev" is "
No action ", the drive will not gene-
rate any indication. The drive will start with
any start command immediately after the
STO safety function or thermistor fault. No
fault reset is required in this case.