Ec/Eu Directives; Overview Of Functions And Characteristics; Characteristics Of Integrated Safety Technology; Performance - Bosch Rexroth ctrlX SAFETY Applications Manual

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System overview
4.3.4

EC/EU directives

4.4

Overview of functions and characteristics

4.4.1

Characteristics of integrated safety technology

Introduction
Drive system with optional safety technology module "Safe Torque Off"
4.4.2

Performance

Time response and reaction times
Bosch Rexroth AG R911383774_Edition 03
ctrlX SAFETY "Safe Torque Off" Safety Option in ctrlX DRIVE
Description
Directive 2006/42/EC
Directive 2014/35/EU
Directive 2014/30/EU
Tab. 4-5: EC/EU directives
This documentation describes the "Safe Torque Off" characteristics of the
integrated safety technology [pure hardware solution (optional safety
technology module "T0")].
With the optional safety technology module "Safe Torque Off" ("T0"), the
energy supply to the motor can be safely interrupted. The drive in this case
cannot generate any torque/force and, as a consequence, it cannot generate
any dangerous movements, either (Safe Torque Off function).
The optional safety technology module "Safe Torque Off" features two 24 V
inputs for dual-channel selection and two outputs for dynamization.
The reaction times of integrated safety technology of the optional safety
technology module "T0" are as follows:
of the STO safety functions, i.e.
transition from normal operation
ctrlX DRIVE
up to 18 ms (preliminary)
with T0 option
Tab. 4-6: Reaction times of integrated safety technology
The above-mentioned reaction times only apply to the safety
functions. To determine the total reaction time of the system, take
the following aspects, among other things, into account:
● When selecting the safety functions
– Time until at least a single-channel selection greater
than 1 ms exists
● When deselecting the safety functions
– Time until an error-free dual-channel deselection exists
– Reaction time of the drive system to drive enable
having been set (putting motor under current, releasing
the brake)
Title
Machinery Directive
Low-Voltage Directive
EMC Directive
Selection
of the STO safety functions, i.e.
transition to normal operation
("bb/Ab")
up to 18 ms (preliminary)
Deselection
("bb/Ab")