Diagnostics
5.2 Fault Diagnostics
ET 200S Distributed I/O System - Fail-Safe Modules
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Installation and Operating Manual, 08/2008, A5E00103686-07
Programmable Diagnostic Functions
You can program (activate) certain diagnostic functions in
STEP 7:
●
Wire-break detection for the F-DI/F-DO module, the F-DO module and the PM-E F pm
●
Short-circuit monitoring for the F-DI/F-DO module and F-DI module
WARNING
Diagnostic functions should be activated or deactivated in accordance with the
application.
Diagnostics by LED Display
Every fail-safe power and electronic module (with the exception of the EM
1 F-RO DC24V/AC24..230V/5A) indicates faults by means of its SF LED (group fault LED).
The SF-LED lights up as soon as a diagnostic function is triggered by the F-module. The SF
LED flashes as long as a cleared fault has not been acknowledged (as of release version
02.) It goes dark when all faults have been eliminated and acknowledged.
The power module is also equipped with a PWR LED which displays the status of the load
voltage supply of the potential group.
The 4/8 F-DI DC24V PROFIsafe electronic module is equipped with two additional fault
LEDs (1VsF and 2VsF) that display faults for the two internal sensor power supplies.
The 4 F-DI/3 F-DO DC24V PROFIsafe electronic module also has a fault LED (VsF) that
displays the faults of the internal sensor supply, and a channel LED, the channel LED and
the SF LED light up red as soon as a diagnostic function is triggered by the F-module. The
LEDs go dark when all faults have been eliminated.
The SF LED flashes until you acknowledge passivation following a module fault.
Slave Diagnostics
Slave diagnostics comply with IEC 61784-1:2003. The fail-safe EMs and PMs support slave
diagnostics in exactly the same way as standard ET 200S modules.
Information about the general structure of slave diagnostics for the ET 200S and the fail-safe
modules can be found in the
ET 200S Distributed I/O System manual. A description of
channel-specific diagnostics for fail-safe modules is presented below.
