Overview Of The Profisafe System; The Profisafe Frame - Danfoss Vacon OPTEA Operating Manual

VACON® NXP Advanced Safety Options
Operating Guide
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

Safety PLC
Safety F-Host
Process Host
PROFIsafe + Process Data
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.
S
Illustration 70: The structure of the PROFIsafe frame. S = Standard frame
112 | Danfoss A/S © 2021.06
N O T I C E
OPTEA
Fieldbus Protocol
PROFINET
Advanced safety
option board
Safety Application F-Device
S S
F-I/O data
Max. 12 octets
VACON® NXP
Drive Application
S S
Status Byte /
Control Byte
1 octet
Safe Fieldbuses
S
CRC2
3 octets
AQ319736045637en-000101 / DPD01798