E-Stop - Harmony eXLhoist User Manual

Safety

E-STOP

Overview
For general descriptions, refer to E-STOP function
The E-STOP is not configurable.
The undesired event of the E-STOP function is masking of E-STOP activation.
The safe state of the E-STOP function is to open safety relays.
Function Installation

E-STOP

With auxiliary
contact loop
between S2_S3
and IN0
Without auxiliary
contact loop
between S2_S3
and IN0
For a SIL3 PLe E-STOP, auxiliary contact of contactors must be mechanically linked. Contactors
shall be compliant with:
EN 60947-4-1:2010 Annex F (preferred) - Requirements for auxiliary contact linked to power

contact (mirror contact), or
EN 60947-5-1:2004 Annex L - Special prescription for elements with contact mechanically

linked.
In order to be compliant with the Common Cause of Failure (CCF), wiring of redundant contactors
or drives must be by different path.
The standard E-STOP function of eXLhoist is limited to a stop category 0 according to IEC 60204-
32. If some applications require an E-STOP function with a stop category 1, then a safety relay type
Preventa XPS ATE or XPS AV or similar must be used.
In order to justify of the safety category 4 according to ISO13849-1, an automatic diagnostic is
realized on IN0 terminal thanks to the S2_S3 terminal (Pulsed 12 V). An external supply of IN0
input cannot be used.
E-STOP function is a passive stop (function activated when an invalid frame is detected).
64
(see page
IEC 60204-32 IEC 61508
STOP SIL
category
Category SIL3
SIL2
121).
IEC 62061 ISO 13849
SIL CL Safety
category
SIL3 CL Safety
category
SIL2 CL Safety
category
EIO0000001505 12/2014
PL
PL e
PL d