Serious Device Fault - Siemens SIMATIC ET 200SP Manual

Product overview
3.2 Operating modes of the F-CM AS-i Safety ST
3.2.2.1

Serious device fault

Description
Examples of conditions that trigger a serious device fault are:
● Fault in the electronics
● Repeated synchronization error
You can read the following pattern on the LEDs:
Table 3- 1
LED
"Status"
"Error"
"CFG"
"PSF"
In the event of a serious device fault, communication with the F-CM AS-i Safety ST module,
e.g., reading a data record, is not possible. The substitute value "0" is processed for inputs
and outputs, and all channels are passivated.
1. Switch off the module.
2. Wait for the module to cool down, if necessary.
3. Switch on the device again.
4. If the error persists after the module is switched on, the module must be replaced.
18
LED display for a serious device fault
Display
"Off"
Red "On"
Red "On"
Red "On"
Fail-safe Module F‑CM AS‑i Safety ST (3RK7136‑6SC00‑0BC1)
Manual, 03/2017, A5E03957059020A/RS-AB/002