N O T I C E
The Advanced safety option board can be controlled with PROFIsafe and digital inputs at the same time, but in that case special
consideration is necessary. The requests from both the sources will be taken into account in the status information of the digital
output and the fieldbus status messages.
7.1.3 Overview of the PROFIsafe System
PROFINET
PROFIsafe
PROFIsafe + Process Data
Drive Application
VACON® NXP
Safety Application F-Device
Advanced safety
option board
OPTEA
Safety PLC
Safety F-Host
Process Host
Fieldbus Protocol
e30bh981.10
Illustration 69: Overview of the PROFIsafe system, with PROFIsafe used over PROFIBUS or PROFINET
The PROFIBUS option board (OPTE3/E5) uses PROFIBUS and the PROFINET option board (OPTEA) uses PROFINET to communicate
with the safety PLC. The exchanged data includes PROFIsafe data and non-safe process data. The PROFIsafe option boards extract
the process data and the safety frame from the received message and forward them. The process data is sent to the drive applica-
tion, and the safety frame is sent to the Advanced safety option board.
The Advanced safety option board receives and sends the PROFIsafe safety frames and implements the configured safety functions.
The Advanced safety option board can also interact with the drive application, which can be parameterized to react to safety func-
tions.
7.1.4 The PROFIsafe Frame
The PROFIsafe frame that is exchanged between the safety PLC (F-Host) and the safety slave (F-Device) includes the safety I/O data
(F-I/O), a Status/Control byte, and a CRC signature. The safety I/O data is used to control the drive safety process, the Status/Control
byte is used for the PROFIsafe communication, and the CRC signature ensures the validity of the frame.
F-I/O data
Max. 12 octets 1 octet 3 octets
Status Byte /
Control Byte
CRC2
S S S S S S
e30bi363.10
Illustration 70: The structure of the PROFIsafe frame. S = Standard frame
AQ319736045637en-000101 / DPD01798112 | Danfoss A/S © 2021.06
Safe Fieldbuses
VACON® NXP Advanced Safety Options
Operating Guide
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