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TR-Electronic GmbH 2022, All Rights Reserved
04/20/2022
TR-EMO-BA-GB-0023 v00
Page 27 of 35
7 Validation of the encoTRive safety functions
This chapter describes the validation of the encoTRive specific safety functions. When this has been
done, a validation of the entire system or machine must take place.
The procedure described below should be regarded as an example and is not meaningful for all appli-
cations. The system or machine manufacturer must ensure the appropriate functions for his applica-
tion.
Prerequisites:
All specifications in this document and the associated documents have
been implemented.
In particular, appropriate precautions have been taken based on the
risk analysis, to ensure that no hazards can arise during execution of
the safety functions, and that damage to property and physical injuries
can be excluded.
● The encoTRive drive system has been put into operation and there is communication with the
control.
● The drive is in a non-safe state, i.e. the safety circuit is closed via inputs I11/I12 or I11/I21 (with or
without cross-circuit monitoring) and the drive controller is enabled.
7.1 STO function
The safety function is triggered, when the safety circuit is interrupted e.g. by an emergency stop
switch. It must then be checked whether the motor torque has been switched off and whether the en-
coTRive motor control outputs error “400” in PNU 947 via the PROFINET interface, denoting the safe
state. The safe state is displayed directly on the encoTRive drive system via the message output
C1 = 24 VDC.
When validating the STO function, the required time until complete standstill of the system or
machine must be taken into account, depending on the application. This depends on the
masses present in the system!
In order to restart the drive after the STO function has triggered, at least 1 s must pass, then the safety
circuit must be closed again via the inputs used, the error must be acknowledged via the PROFINET
interface and after this the drive controller must be activated again.
