Fail-Safe Modules
7.6 EM 4 F-DI/3 F-DO DC24V PROFIsafe digital electronic module
ET 200S Distributed I/O System - Fail-Safe Modules
148 Installation and Operating Manual, 08/2008, A5E00103686-07
Fault detection if ...
Short-circuit DI0 with DI5 No No No
P short-circuit DI0 Yes No No
M short-circuit DI0 Yes* Yes* No
Discrepancy error Yes Yes Yes
P-short circuit in sensor
supply
Yes No No
M-short-circuit in sensor
supply or defective
Yes Yes Yes
Short-circuit SS with DI0 No No No
Supply voltage fault Yes Yes Yes
*: Fault is detected only in case of signal corruption. In other words, the signal read differs from the
sensor signal (discrepancy error). If there is no signal corruption with respect to the sensor signal,
fault detection is not possible and is not required from a safety standpoint.
WARNING
If the short-circuit test is disabled or cannot be enabled, the wiring between the sensor and
input channel must be short circuit-proof.
To Next Page
Loading...
Need help?
General
