Introduction - Altivar Process ATV630 Function Manual

Introduction

Certified Architectures
NOTE: For certification relating to functional aspects, only the PDS(SR) (Power Drive System suitable for
use in safety-related applications) will be considered, not the complete system into which it is integrated to
help to ensure the functional safety of a machine or a system/process.
These are the certified architectures:
Process system SF - Case 1

Process system SF - Case 2

Process system SF - Case 3

Process system SF - Case 4

Process system SF - Case 5

Process system SF - Case 6

Process system SF - Case 7

The safety functions of a PDS(SR) (Power Drive System suitable for use in safety-related applications) are
part of an overall system.
If the qualitative and quantitative safety-related objectives determined by the final application require some
adjustments to ensure safe use of the safety functions, the integrator of the BDM (Basic Drive Module) is
responsible for these additional changes (for example, managing the mechanical brake on the motor).
Also, the output data generated by the use of safety functions (activation of the digital input set to
[Operating State Fault], error codes or information on the display, etc.) is not considered to be a safety-
related data.
Protected cable insulation
The STO safety function is triggered via 2 redundant inputs. These two circuits have to be wired according
to protective cable insulation.
If short circuits and cross circuits can occur with safety-related signals and if they are not detected by
upstream devices, protected cable installation as per ISO 13849-2 is required.
In the case of an unprotected cable installation, the two signals (both channels) of a safety function in short
circuit state may be connected to external voltage if a cable is damaged. In this case, the safety function
is no longer operative.
For EMC purpose, both STO inputs have to be shielded with twisted cables with a pitch of 25...50 mm (1 in.
and 2 in.), connecting the shielding to Ground at each end of the shielded cables for the signal lines.
Ground loops may cause problems in machines. In this case the shield has to be connected to ground on
drive side only.
Power Supply Unit
ELECTRIC SHOCK CAUSED BY INCORRECT POWER SUPPLY UNIT
The +24 Vdc supply voltage is connected with many exposed signal connections in the drive system.


Failure to follow these instructions will result in death or serious injury.
Acceptance Test
The system integrator/machine manufacturer must perform an acceptance test of the safety function STO
to verify and document the correct functionality of the safety function. The system integrator/machine
manufacturer hereby certifies to have tested the effectiveness of the safety functions used. The
acceptance test must be performed on the basis of the risk analysis. All applicable standards and
regulations must be adhered to.
Ambient Conditions
The ambient conditions to be met for the safety function STO correspond to the ambient conditions for the
drives, see the ATV630, 650 Installation manual
26
Use a power supply unit that meets the PELV (Protective Extra Low Voltage) requirements.
Connect the negative output of the power supply unit to PE (ground).
DANGER
EAV64301 www.schneider-electric.com
on .
EAV64334 06/2017