Fagor QC-PDS, Hardware Manual

Page: 310 / 420

  
Functional safety
9.
FUN
C
TI
ON
AL SAFET
Y
Desig
n R
equi
rements
· 310 ·
320
Ref.2003
QC-PDS
HARDWARE
The SELV/PELV power supply
To feed the STO and STOFB, always use a SELV/PELV power supply.
Operating mode and configuration
The safety functions only have a normal operating mode. It does not have
any special mode for configuration and/or maintenance.
The STO function is not configurable. See section,
SAFE STOP 1 ·SS1·
.
Examples for EN ISO 13849-1
Example 1
Emergency stop with STO, Cat. 3, PL d | SIL 2
Example 2
Emergency stop with SS1, Cat. 3, PL d | SIL 2
Option 1.
NOTE. Examples of designs for the safety-related parts of the SRP/CS
control system of machines using QC-DR drive STO safety function,
according to standard ISO 13849-1.
NOTE. The examples do not take into account the holding brake control
by the external safety controller.
F. H9/2
Emergency stop with STO, Cat. 3, PL d | SIL 2.
F. H9/3
Emergency stop with SS1-t , Cat. 3, PL d | SIL 2. Option 1.
EXTERNAL SAFETY CONTROLLER
Cat. 3 PL d
A1
A2
S21 S22 S11 S12 23
S33 S34 14 24
13
- F
1
2
3
4
5
6
1
2
3
4
5
6
X13A
X13B
STO1
STO1
STO2
STO2
ON
(only in dual-drive)
24 V DC
QC-DR
State definitions
STO1 or STO2 = 0  Torque Off
Positive logic
A1
A2
S21 S22 S11 S12 37
S33 S34 14 38
13
1
2
3
4
5
6
1
2
3
4
5
6
48
47 57
to PLC INPUT
to deactivate
SPENA
From
PLC of
the CNC
FUSE current-limiting
or current limiter
EXTERNAL SAFETY CONTROLLER
Cat. 3 PL d
STO1
STO1
STO2
STO2
ON
- F - F1
X13A
X13B
(only in dual-drive)
24 V DC
QC-DR
State definitions
STO1 or STO2 = 0  Torque Off
Positive logic