Parameters Of The Em 4/8 F-Di Dc24V Profisafe - Siemens SIMATIC ET 200S Installation And Operating Manual

7.5.4

Parameters of the EM 4/8 F-DI DC24V PROFIsafe

STEP 7
Parameters in
The following table presents the parameters that can be assigned for the
EM 4/8 F-DI 24 VDC PROFIsafe.
Table 7-19
Parameter
F-Parameters:
F_destination_address
F monitoring time
Module Parameters:
Input delay
Short-circuit test
Behavior after channel
faults*
Channel n, n+4
Evaluation of the Sensors
Type of sensor
interconnection
Discrepancy response
Discrepancy Time
* This setting is only relevant when S7 Distributed Safety V5.4 or higher is installed.
Input Delay of 3 ms Parameter
Note
With 3 ms input delay shielded cables must be used if there is a danger of overvoltage on
the signal lines (see "Electromagnetic Compatibility") to prevent possible passivation of the
fail-safe digital inputs and the sensor power supply shutdown.
If unshielded signal lines are used the safe behavior of the process quantities is ensured.
ET 200S Distributed I/O System - Fail-Safe Modules
Hardware Installation and Operating Manual, 07/2005, A5E00103686-04
7.5 4/8 F-DI VDC24V PROFIsafe Digital Electronic Module
Parameters of the EM 4/8 F-DI DC24V PROFIsafe
Range
1 to 1022
10 to 10000 ms
0.5; 3; 15 ms
Cyclic/blocked
Passivate the entire
module/Passivate the
channel
Activated/deactivated
1oo2 evaluation/
1oo1 evaluation
1-channel;
2-channel equivalent;
2-channel, non-
equivalent
Provide last valid value;
provide 0 value
10 to 30000 ms
Default Type of
Parameter
Assigned by Static
STEP 7
150 ms Static
3 ms Static
Cyclic Static
Passivate the Static
entire module
Activated Static
1oo2 Static
Evaluation
2-channel Static
equivalent
Provide last Static
valid value
10 ms Static
Fail-Safe Modules
Effective
Range
Module
Module
Module
Module
Module
Channel
Group
Channel
Group
Channel
Group
Channel
Group
Channel
Group
7-51