Emergency Stop Using The Sto Function - Danfoss Vacon OPTEA Operating Manual

VACON® NXP Advanced Safety Options
Installation Guide
2. Connect the STO request input of the STO board to terminals +24 V and GND so that the STO function is disabled.
3.
Power up the AC drive.
4. Set the parameter P7.4.1.2.1 in the expander board menu to value "Warning" to deactivate the drive response to faults re-
ported by the Advanced safety option.
5. Reset the faults.
a.
The AC drive should be in the READY state.

5.6 Emergency Stop Using the STO Function

This is an example configuration for realizing emergency stop according to IEC-60204-1 using the STO function in the Advanced
safety option board OPTBL and the STO option board OPTAF. The drive reset is used to clear the faults and to deactivate the STO
function after violations and faults. The STO function is set to the manual acknowledgment mode.
Depending on the result of the risk and hazard analysis, you can use the safe external acknowledgment signal 1) or the non-safe
drive acknowledgment 2). The case in
The STO request is assigned to Digital Input 1 of the Advanced safety option board. External acknowledgment signal is assigned to
Digital input 2. No speed measurement is needed or considered for this configuration.
Table 6: Configuration in OPTBL. Used Safety Functions: STO
STO parameters
Acknowledgment Mode (STO)
Table 7: Input/Output Parameters
Input/output parameters
Digital Input 1
Digital Input 2
Table 8: General Parameters
General parameters
Drive Reset
Drive Acknowledgment
1) and 2) indicate alternative options. Use values marked with the same number.
20 | Danfoss A/S © 2021.08
Illustration 11 has safe external acknowledgment.
Value
Manual
Value
STO
Acknowledgment 1)
Value
Enabled
Enabled 2)
Disabled 1)
AN384043247178en-000101 / DPD01919
Commissioning