
6-4
Safe Torque Off
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames E & F
Alignment to European Standards
EN ISO13849-1:2008
(Safety of machinery – Safety-related parts of control systems)
STO aligns internally to the following aspects of this standard:
•
Architecture according to Category 3:
Solid lines represent the STO control paths.
Dashed lines represent reasonably practicable fault detection.
Key:
I1, I2 = user terminal
L1, L2 = logic
O1, O2 = methods of enabling or disabling output power devices
i
mxy
=
interconnecting means
m
x
= monitoring
c
= cross monitoring
I1
L1
O1
I2
L2
O2
i
m1a
i
m2a
i
m1b
i
m2b
m
1
m
2
c