Siemens PM-D F DC24V PROFIsafe - Diagnostic Functions of the EM 4;8 F-DI DC24 V Profisafe

Fail-Safe Modules
7.5 4/8 F-DI DC24V PROFIsafe Digital Electronic Module
ET 200S Distributed I/O System - Fail-Safe Modules
130 Installation and Operating Manual, 08/2008, A5E00103686-07
7.5.9 Diagnostic Functions of the EM 4/8 F-DI DC24V PROFIsafe
Behavior in Case of Supply Voltage Failure
Failure of the Vs1 and Vs2 sensor power supply of the EM 44/8 F-DI DC24V PROFIsafe is
indicated by the 1VsF and 2VsF LED on the F-module. This information is also provided in
the module (diagnostic entry). Either all channels of the module are passivated or, in case of
channel-specific passivation, the relevant channels are passivated.
In the case of a voltage dip in the external auxiliary voltage, the SF LED lights up, the
module is passivated.
With the subsequent supply recovery (level must remain above the specified value for at
least 1 minute (refer to the technical specifications: voltages, currents, electrical potentials))
the SF LED goes out again, the module remains passivated. The SF LED flashes if there are
no other errors, until the error is acknowledged.
Behavior in Case of Cross-Circuit/Short-Circuit at the Sensor Supply
When operating with programmed external sensor supply and blocked short-circuit test, you
enable the detection of short-circuits to M at the sensor supplies and signaling at the
corresponding VsFLED. No entries are made in the diagnostics data of the module.
When operating with a configured external sensor supply and cyclic short-circuit test, you
enable the detection of cross-circuits between 1Vs and 2Vs and short-circuits to M and P at
the sensor supplies and signaling at the corresponding VsF LED. No entries are made in the
diagnostics data of the module.
Diagnostic functions
The table below provides an overview of the diagnostic functions of the EM 4/8 F-DI DC24V
PROFIsafe. The diagnostic functions are assigned either to one channel or to the entire
module.
Table 7- 24 Diagnostic functions of the EM 4/8 F-DI DC24V PROFIsafe
Diagnostic Function* Fault
Number
LED Signaled in
Application
Effective
Range of
Diagnostics
Can be
Assigned
Parameter
s
Short circuit 1
H
SF
1VsF
2VsF
1, 2, 3 Channel Yes
Overtemperature 5
H
SF 1, 2, 3 Module No
Internal error 9
H
SF 1, 2, 3 Module No
Parameter assignment error 10
H
SF 1, 2, 3 Module No
Sensor voltage or load voltage
missing
11
H
SF 1, 2, 3 Module No
Communication error 13
H
SF 1, 2, 3 Module No