Functional safety
FUN
C
TI
ON
AL SAFET
Y
Mai
n Characteristics of
the Safety
F
un
ctio
ns
9.
QC-PDS
HARDWARE
Ref.2003
· 305 ·
9.1 Main Characteristics of the Safety Functions
These drives have the following safety functions:
S
afe
T
orque
O
ff
Definition. Safe torque off. STO safety inputs that remove the motor
torque on the axis in a safe manner. STO correspond to an uncontrolled
stop according to stop category 0 of standard IEC 60204-1.
Availability. Always available.
and it is:
A type.
Defined according to Section 7.4.4.1.2 of IEC 61508-2. See
also its appendix D.2.2.
Cat. 3 PL d - SIL 2
The safety functions extend to:
EN ISO 13849-1 Cat. 3 PL d
IEC 61508 SIL 2
See the requirements for
in
.
Channels of the safety functions
STO has a 1oo2 architecture - Cat. 3, with a dual channel with feedback.
S
afe
T
orque
O
ff (STO)
Input of the first channel. Pins 1 and 2 of X13A and X13B (only in dual-
drive) connectors of the drive. Remove the torque for the axis.
Input of the second channel. Pins 3 and 4 of the X13A and X13B (only
in dual-drive) connectors of the drive. Remove the torque for the axis.
Common feedback to both channels.
The internal contacts (
n
ormally
c
losed) must be monitored through of pins 5 and 6 of the X13A and
X13B (only in dual-drive) connectors.
Safe state
The safety state of the drive
is without motor torque.
The external safety controller may use the "Torque Off" state of the drive
to achieve a
safe state of the machine
. In addition, if a holding brake is
necessary ·see
UNCOMPENSATED FORCES ON A VERTICAL AXIS
· the
controller must also close it so that the machine can reach the safe state.
Summary of Contents for QC-PDS
Page 1: ...DRIVE QC PDS Hardware manual Ref 2003...
Page 6: ...6 I 6 Ref 2003 6 QC PDS HARDWARE This page intentionally left blank...
Page 16: ...16 Ref 2003 16 Previous I QC PDS HARDWARE This page intentionally left blank...
Page 18: ...18 Ref 2003 18 Previous II QC PDS HARDWARE This page intentionally left blank...
Page 80: ...2 POWER SUPPLIES Power supplies 80 Ref 2003 QC PDS HARDWARE...
Page 138: ...3 DRIVES Drives 138 Ref 2003 QC PDS HARDWARE...
Page 174: ...4 AUXILIARY MODULES Auxiliary modules Ref 2003 174 QC PDS HARDWARE...
Page 302: ...8 INSTALLATION Installation Ref 2003 302 QC PDS HARDWARE...
Page 366: ...12 COMMERCIAL MODELS Commercial models Ref 2003 QC PDS HARDWARE 366...
Page 367: ...ANNEXES...
Page 368: ...ANNEX A1...
Page 383: ...ANNEX A2...
Page 398: ...ANNEX A3...
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